57
57
Sep 18, 2013
09/13
by
R. J. Wilman; A. C. Edge; A. M. Swinbank
texts
eye 57
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We present optical integral field spectroscopy of the H-alpha-luminous (>1E42 erg/s) central cluster galaxies in the cores of the cooling flows A1664, A1835, A2204 and Zw8193. From the [NII]+H-alpha complex we derive 2-D views of the distribution and kinematics of the emission line gas, and further diagnostics from the [SII] and [OI] lines. The H-alpha emission shows a variety of disturbed morphologies with velocity gradients and splittings of several hundred km/s on scales of 20 kpc or...
Source: http://arxiv.org/abs/astro-ph/0606305v1
45
45
Sep 21, 2013
09/13
by
R. J. Wilman; A. C. Edge; A. M. Swinbank
texts
eye 45
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We present VLT-SINFONI K-band IFU spectroscopy of the central galaxies in the cool core clusters A1664, A2204 and PKS 0745-191, to probe the Pa-alpha and ro-vibrational H2 line emission. In A1664 the two emission-line velocity systems seen in our previous H-alpha data appear in both Pa-alpha and H2 emission, with notable morphological differences. The recession velocity of the red component of Pa-alpha increases linearly with decreasing radius, particularly along an 8 kpc filament aligned with...
Source: http://arxiv.org/abs/0902.4720v1
66
66
Sep 21, 2013
09/13
by
Ian Smail; A. M. Swinbank; R. J. Ivison; E. Ibar
texts
eye 66
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We investigate whether strong molecular and atomic emission lines at far-infrared wavelengths can influence the identification and derived properties of galaxies selected from broad-band, far-infrared or submillimetre observations. Several of these lines, e.g. [CII]158um, have been found to be very bright in some high-redshift galaxies, with fluxes of >0.1-1% of the total far-infrared luminosity, and may be even brighter in certain populations at high redshifts. At redshifts where these...
Source: http://arxiv.org/abs/1104.1758v1
40
40
Sep 18, 2013
09/13
by
T. -T. Yuan; L. J. Kewley; A. M. Swinbank; J. Richard
texts
eye 40
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We present the spatially resolved emission line ratio properties of a ~10^10 M_sun star-forming galaxy at redshift z=1.03. This galaxy is gravitationally lensed as a triple-image giant arc behind the massive lensing cluster Abell 2667. The main image of the galaxy has magnification factors of 14+/-2.1 in flux and ~ 2 by 7 in area, yielding an intrinsic spatial resolution of 115-405 pc after AO correction with OSIRIS at KECK II. The HST morphology shows a clumpy structure and the H\alpha\...
Source: http://arxiv.org/abs/1209.3805v1
89
89
Jul 22, 2013
07/13
by
T. D. Rawle; Russell J. Smith; J. R. Lucey; A. M. Swinbank
texts
eye 89
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We present results from a pilot study of radial stellar population trends in early-type galaxies using the VLT VIMOS integral field unit (IFU). We observe twelve galaxies in the cluster Abell 3389 (z~0.027). For each galaxy, we measure 22 line-strength indices in multiple radial bins out to at least the effective radius. We derive stellar population parameters using a grid inversion technique, and calculate the radial gradients in age, metallcity and alpha-abundance. Generally, the galaxies in...
Source: http://arxiv.org/abs/0807.3545v1
65
65
Sep 18, 2013
09/13
by
Simon Dye; Ian Smail; A. M. Swinbank; H. Ebeling; A. C. Edge
texts
eye 65
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We model the mass distribution in the recently discovered Einstein ring LBG J213512.73-010143 (the `Cosmic Eye') using archival Hubble Space Telescope imaging. We reconstruct the mass density profile of the z=0.73 lens and the surface brightness distribution of the z=3.07 source and find that the observed ring is best fit with a dual-component lens model consisting of a baryonic Sersic component nested within a dark matter halo. The dark matter halo has an inner slope of 1.42+/-0.23, consistent...
Source: http://arxiv.org/abs/0705.1720v1
8
8.0
Jun 30, 2018
06/18
by
C. M. Harrison; D. M. Alexander; J. R. Mullaney; A. M. Swinbank
texts
eye 8
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We present integral field unit (IFU) observations covering the [O III]4959,5007 and H-Beta emission lines of sixteen z ~10-20x L[AGN]/c) consistent with theoretical models that predict AGN-driven outflows play a significant role in shaping the evolution of galaxies.
Topics: Astrophysics of Galaxies, High Energy Astrophysical Phenomena, Astrophysics, Cosmology and...
Source: http://arxiv.org/abs/1403.3086
5
5.0
Jun 30, 2018
06/18
by
Renske Smit; A. M. Swinbank; Richard Massey; Johan Richard; Ian Smail; J. -P. Kneib
texts
eye 5
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We present a VLT/MUSE survey of lensed high-redshift galaxies behind the z=0.77 cluster RCS0224-0002. We study the detailed internal properties of a highly magnified ({\mu}~29) z=4.88 galaxy seen through the cluster. We detect wide-spread nebular CIV{\lambda}{\lambda}1548,1551{\AA} emission from this galaxy as well as a bright Ly{\alpha} halo with a spatially-uniform wind and absorption profile across 12 kpc in the image plane. Blueshifted high- and low-ionisation interstellar absorption...
Topics: Astrophysics of Galaxies, Astrophysics, Cosmology and Nongalactic Astrophysics
Source: http://arxiv.org/abs/1701.08160
51
51
Sep 21, 2013
09/13
by
J. P. Stott; A. C. Edge; G. P. Smith; A. M. Swinbank; H. Ebeling
texts
eye 51
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We investigate the near infrared evolution of brightest cluster galaxies (BCGs) from a sample of rich galaxy clusters since z=1. By employing an X-ray selection of Lx>1e44 erg s-1 we limit environmental effects by selecting BCGs in comparably high density regions. We find a positive relationship between X-ray and near-infrared luminosity for BCGs in clusters with Lx>5e44 erg s-1. Applying a correction for this relation we reduce the scatter in the BCG absolute magnitude by a factor of...
Source: http://arxiv.org/abs/0712.0496v1
38
38
Sep 22, 2013
09/13
by
T. -T. Yuan; L. J. Kewley; A. M. Swinbank; J. Richard; R. C. Livermore
texts
eye 38
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We present the first metallicity gradient measurement for a grand-design face-on spiral galaxy at z~1.5. This galaxy has been magnified by a factor of 22$\times$ by a massive, X-ray luminous galaxy cluster MACS\,J1149.5+2223 at z=0.544. Using the Laser Guide Star Adaptive Optics aided integral field spectrograph OSIRIS on KECK II, we target the Halpha emission and achieve a spatial resolution of 0.1", corresponding to a source plane resolution of 170 pc. The galaxy has well-developed...
Source: http://arxiv.org/abs/1103.3277v2
47
47
Sep 22, 2013
09/13
by
D. J. B. Smith; C. Simpson; A. M. Swinbank; S. Rawlings; M. J. Jarvis
texts
eye 47
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We present a range of new observations of the "broad absorption line radio galaxy" 4C +72.26 (z = 3.5), including sensitive rest-frame ultraviolet integral field spectroscopy using the Gemini/GMOS-N instrument and Subaru/CISCO K-band imaging and spectroscopy. We show that 4C +72.26 is a system of two vigorously star-forming galaxies superimposed along the line of sight separated by ~1300 +/- 200 km/s in velocity, with each demonstrating spectroscopically resolved absorption lines. The...
Source: http://arxiv.org/abs/1001.2018v1
36
36
Sep 18, 2013
09/13
by
Ian Smail; Rob Sharp; A. M. Swinbank; M. Akiyama; Y. Ueda; S. Foucaud; O. Almaini; S. Croom
texts
eye 36
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We have undertaken a pilot survey for faint QSOs in the UKIDSS Ultra Deep Survey Field using the KX selection technique. These observations exploit the very deep near-infrared and optical imaging of this field from UKIRT and Subaru to select candidate QSOs based on their VJK colours and morphologies. We determined redshifts for 426 candidates using the AAOmega spectrograph on the AAT in service time. We identify 17 QSOs (M_B
Source: http://arxiv.org/abs/0806.2538v1
45
45
Sep 19, 2013
09/13
by
C. M. Casey; S. C. Chapman; Ian Smail; S. Alaghband-Zadeh; M. S. Bothwell; A. M. Swinbank
texts
eye 45
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We present near-infrared spectroscopic observations from VLT ISAAC of thirteen 250\mu m-luminous galaxies in the CDF-S, seven of which have confirmed redshifts which average to = 2.0 \pm 0.4. Another two sources of the 13 have tentative z > 1 identifications. Eight of the nine redshifts were identified with H{\alpha} detection in H- and K-bands, three of which are confirmed redshifts from previous spectroscopic surveys. We use their near-IR spectra to measure H{\alpha} line widths and...
Source: http://arxiv.org/abs/1009.5709v1
51
51
Sep 19, 2013
09/13
by
P. Salucci; A. M. Swinbank; A. Lapi; I. Yegorova; R. G. Bower; Ian Smail; G. P. Smith
texts
eye 51
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We present a detailed study of the structural properties of four gravitationally lensed disk galaxies at z=1. Modelling the rotation curves on sub-kpc scales we derive the values for the disk mass, the reference dark matter density and core radius, and the angular momentum per unit mass. The derived models suggest that the rotation curve profile and amplitude are best fit with a dark matter component similar to those of local spiral galaxies. The stellar component also has a similar length...
Source: http://arxiv.org/abs/0708.0753v1
12
12
Jun 26, 2018
06/18
by
A. P. Thomson; R. J. Ivison; Frazer N. Owen; A. L. R Danielson; A. M. Swinbank; Ian Smail
texts
eye 12
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We present new, high-angular resolution interferometric observations with the Karl G. Jansky Very Large Array of $^{12}$CO $J=1-0$ line emission and 4-8 GHz continuum emission in the strongly lensed, $z=2.3$ submillimetre galaxy, SMM J21352-0102. Using these data, we identify and probe the conditions in $\sim 100$pc clumps within this galaxy, which we consider to be potential giant molecular cloud complexes, containing up to half of the total molecular gas in this system. In combination with...
Topics: Astrophysics of Galaxies, Astrophysics
Source: http://arxiv.org/abs/1501.04624
5
5.0
Jun 29, 2018
06/18
by
J. Molina; E. Ibar; A. M. Swinbank; D. Sobral; P. N. Best; I. Smail; A. Escala; M. Cirasuolo
texts
eye 5
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We present adaptive optics (AO) assisted SINFONI integral field unit (IFU) spectroscopy of eleven H$\alpha$ emitting galaxies selected from the High-Z Emission Line Survey (HiZELS). We obtain spatially resolved dynamics on ~kpc-scales of star-forming galaxies (stellar mass M$_\star$ = 10$^{9.5-10.5}$ M$_\odot$ and star formation rate SFR = 2-30 M$_\odot$ yr$^{-1}$) near the peak of the cosmic star-formation rate history. Combining these observations with our previous SINFONI-HiZELS campaign, we...
Topics: Astrophysics, Astrophysics of Galaxies
Source: http://arxiv.org/abs/1612.00447
3
3.0
Jun 29, 2018
06/18
by
H. L. Johnson; C. M. Harrison; A. M. Swinbank; R. G. Bower; Ian Smail; Y. Koyama; J. E. Geach
texts
eye 3
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To investigate what drives the reversal of the morphology-density relation at intermediate/high redshift, we present a multi-wavelength analysis of 27 dusty starburst galaxies in the massive cluster Cl 0024+17 at z = 0.4. We combine H-alpha dynamical maps from the VLT/FLAMES multi-IFU system with far-infrared imaging using Herschel SPIRE and millimetre spectroscopy from IRAM/NOEMA, in order to measure the dynamics, star formation rates and gas masses of this sample. Most galaxies appear to be...
Topics: Astrophysics, Astrophysics of Galaxies
Source: http://arxiv.org/abs/1605.01058
14
14
Jun 28, 2018
06/18
by
S. Zieleniewski; N. Thatte; S. Kendrew; R. C. W. Houghton; A. M. Swinbank; M. Tecza; F. Clarke; T. Fusco
texts
eye 14
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We present HSIM: a dedicated pipeline for simulating observations with the HARMONI integral field spectrograph on the European Extremely Large Telescope. HSIM takes high spectral and spatial resolution input data-cubes, encoding physical descriptions of astrophysical sources, and generates mock observed data-cubes. The simulations incorporate detailed models of the sky, telescope and instrument to produce realistic mock data. Further, we employ a new method of incorporating the strongly...
Topics: Instrumentation and Methods for Astrophysics, Astrophysics
Source: http://arxiv.org/abs/1508.04441
51
51
Sep 20, 2013
09/13
by
Tadafumi Takata; Kazuhiro Sekiguchi; Ian Smail; Scott C. Chapman; J. E. Geach; A. M. Swinbank; Andrew Blain; R. J. Ivison
texts
eye 51
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We report the results of a systematic near-infrared spectroscopic survey using the Subaru, VLT and Keck Telescopes of a sample of high redshift Ultra-luminous Infrared Galaxies (ULIRGs) mainly composed of submillimeter-selected galaxies. Our observations span the restframe optical range containing nebular emission lines such as H_beta, [OIII], and [OII], which are essential for making robust diagnostics of the physical properties of these ULIRGs. Using the H_alpha/H_beta emission line ratios,...
Source: http://arxiv.org/abs/astro-ph/0607580v1
65
65
Sep 17, 2013
09/13
by
Rob Ivison; Ian Smail; Padeli P. Papadopoulos; Isak Wold; Johan Richard; A. M. Swinbank; Jean-Paul Kneib; Frazer N. Owen
texts
eye 65
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We present new multi-wavelength observations of the first submm-selected galaxy, SMM J02399-0136 at z=2.8. These observations include mapping of the CO J=1-0 emission using elements of the Expanded VLA, as well as high-resolution 1.4-GHz imaging and optical/IR data from the VLA, HST, Spitzer and Keck. Together these new data provide fundamental insights into the mass and distribution of stars, gas and dust within this archetypal SMG. The CO J=1-0 emission, with its minimal excitation and...
Source: http://arxiv.org/abs/0912.1591v2
56
56
Sep 21, 2013
09/13
by
T. P. Roberts; J. C. Gladstone; A. D. Goulding; A. M. Swinbank; M. J. Ward; M. R. Goad; A. J. Levan
texts
eye 56
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We present the preliminary results of two Gemini campaigns to constrain the mass of the black hole in an ultraluminous X-ray source (ULX) via optical spectroscopy. Pilot studies of the optical counterparts of a number of ULXs revealed two candidates for further detailed study, based on the presence of a broad He II 4686 Angstrom emission line. A sequence of 10 long-slit spectra were obtained for each object, and the velocity shift of the ULX counterpart measured. Although radial velocity...
Source: http://arxiv.org/abs/1011.2155v1
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38
Sep 21, 2013
09/13
by
Manda Banerji; Scott C. Chapman; Ian Smail; S. Alaghband-Zadeh; A. M. Swinbank; J. S. Dunlop; R. J. Ivison; A. W. Blain
texts
eye 38
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We present a spectroscopic catalogue of 40 luminous starburst galaxies at z=0.7--1.7 (median z=1.3). 19 of these are submillimetre galaxies (SMGs) and 21 are submillimetre-faint radio galaxies (SFRGs). This sample helps to fill in the redshift desert at z=1.2--1.7 in previous studies as well as probing a lower luminosity population of galaxies. Radio fluxes are used to determine star-formation rates for our sample which range from around 50 to 500 M$_\odot$ yr$^{-1}$ and are generally lower...
Source: http://arxiv.org/abs/1108.0420v1
5
5.0
Jun 30, 2018
06/18
by
John P. Stott; David Sobral; A. M. Swinbank; Ian Smail; Richard Bower; Philip N. Best; Ray M. Sharples; James E. Geach; Jorryt Matthee
texts
eye 5
favorite 0
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We have observed a sample of typical z=1 star forming galaxies, selected from the HiZELS survey, with the new KMOS near-infrared, multi-IFU instrument on the VLT, in order to obtain their dynamics and metallicity gradients. The majority of our galaxies have a metallicity gradient consistent with being flat or negative (i.e. higher metallicity cores than outskirts). Intriguingly, we find a trend between metallicity gradient and specific star formation rate (sSFR), such that galaxies with a high...
Topics: Astrophysics of Galaxies, Astrophysics
Source: http://arxiv.org/abs/1407.1047
25
25
Jun 26, 2018
06/18
by
F. Stanley; C. M. Harrison; D. M. Alexander; A. M. Swinbank; J. A. Aird; A. Del Moro; R. C. Hickox; J. R. Mullaney
texts
eye 25
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In this study we investigate the relationship between the star formation rate, SFR, and AGN luminosity, L(AGN), for ~2000 X-ray detected AGN. The AGN span over three orders of magnitude in X-ray luminosity (10^(42) < L(2-8keV) < 10^(45.5) erg/s) and are in the redshift range z = 0.2 - 2.5. Using infrared (IR) photometry (8 - 500um), including deblended Spitzer and Herschel images and taking into account photometric upper limits, we decompose the IR spectral energy distributions into AGN...
Topics: Cosmology and Nongalactic Astrophysics, High Energy Astrophysical Phenomena, Astrophysics,...
Source: http://arxiv.org/abs/1502.07756
43
43
Sep 19, 2013
09/13
by
A. M. Swinbank; R. G. Bower; G. P. Smith; R. J. Wilman; Ian Smail; R. S. Ellis; S. L. Morris; J. -P. Kneib; ;
texts
eye 43
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By combining HST imaging with optical (VIMOS) and near-infrared (SINFONI) integral field spectroscopy we exploit the gravitational potential of a massive, rich cluster at z=0.9 to study the internal properties of a gravitationally lensed galaxy at z=4.88. Using a detailed gravitational lens model of the cluster RCS0224-002 we reconstruct the source-frame morphology of the lensed galaxy on 200pc scales and find an ~L* Lyman-break galaxy with an intrinsic size of only 2.0x0.8kpc, a velocity...
Source: http://arxiv.org/abs/astro-ph/0701221v1
4
4.0
Jun 29, 2018
06/18
by
Georgios E. Magdis; M. Bureau; J. P. Stott; A. Tiley; A. M. Swinbank; R. Bower; A. J. Bunker; M. Jarvis; H. Johnson; R. Sharples
texts
eye 4
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We present first results from the KMOS Redshift One Spectroscopic Survey (KROSS), an ongoing large kinematical survey of a thousand, z~1 star forming galaxies, with VLT KMOS. Out of the targeted galaxies (~500 so far), we detect and spatially resolve Ha emission in ~90% and 77% of the sample respectively. Based on the integrated Ha flux measurements and the spatially resolved maps we derive a median star formation rate (SFR) of ~7.0 Msun/yr and a median physical size of = 5.1kpc. We combine the...
Topics: Astrophysics, Astrophysics of Galaxies
Source: http://arxiv.org/abs/1601.04713
52
52
Sep 23, 2013
09/13
by
S. L. Hamer; A. C. Edge; A. M. Swinbank; R. J. Wilman; H. R. Russell; A. C. Fabian; J. S. Sanders; P. Salom
texts
eye 52
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There is a strong spatial correlation between brightest cluster galaxies (BCGs) and the peak density and cooling rate of the intra-cluster medium (ICM). In this paper we combine integral field spectroscopy, CO observations and X-ray data to study three exceptional clusters (Abell 1991, Abell 3444 and Ophiuchus) where there is a physical and dynamical offset between the BCG and the cooling peak to investigate the connection between the cooling of the intracluster medium, the cold gas being...
Source: http://arxiv.org/abs/1112.4848v1
3
3.0
Jun 30, 2018
06/18
by
C. M. Harrison; A. P. Thomson; D. M. Alexander; F. E. Bauer; A. C. Edge; M. T. Hogan; J. R. Mullaney; A. M. Swinbank
texts
eye 3
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We present multi-frequency (1-8 GHz) VLA data, combined with VIMOS IFU data and HST imaging, of a z=0.085 radio-quiet type 2 quasar (with L(1.4GHz)~5e23 W/Hz and L(AGN)~2e45 erg/s). Due to the morphology of its emission-line region, the target (J1430+1339) has been referred to as the Teacup AGN in the literature. We identify "bubbles" of radio emission that are extended ~10-12 kpc to both the east and west of the nucleus. The edge of the brighter eastern bubble is co-spatial with an...
Topics: Astrophysics of Galaxies, High Energy Astrophysical Phenomena, Astrophysics, Cosmology and...
Source: http://arxiv.org/abs/1410.4198
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56
Sep 19, 2013
09/13
by
M. D. Lehnert; N. P. H. Nesvadba; J. -G. Cuby; A. M. Swinbank; S. Morris; B. Clement; C. J. Evans; M. N. Bremer; S. Basa
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eye 56
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Galaxies had their most significant impact on the Universe when they assembled their first generations of stars. Energetic photons emitted by young, massive stars in primeval galaxies ionized the intergalactic medium surrounding their host galaxies, cleared sight-lines along which the light of the young galaxies could escape, and fundamentally altered the physical state of the intergalactic gas in the Universe continuously until the present day. Observations of the Cosmic Microwave Background,...
Source: http://arxiv.org/abs/1010.4312v1
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56
Sep 22, 2013
09/13
by
R. C. Livermore; A. M. Swinbank; I. Smail; R. G. Bower; K. E. K. Coppin; R. A. Crain; A. C. Edge; J. E. Geach; J. Richard
texts
eye 56
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We present the results of a search for molecular gas emission from a star-forming galaxy at z = 4.9. The galaxy benefits from magnification of 22 +/- 5x due to strong gravitational lensing by the foreground cluster MS1358+62. We target the CO(5-4) emission at a known position and redshift from existing Hubble Space Telescope/ACS imaging and Gemini/NIFS [OII]3727 imaging spectroscopy, and obtain a tentative detection at the 4.3sigma level with a flux of 0.104 +/- 0.024Jkm/s. From the CO line...
Source: http://arxiv.org/abs/1210.0899v1
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7.0
Jun 29, 2018
06/18
by
Chian-Chou Chen; Ian Smail; A. M. Swinbank; James M. Simpson; Omar Almaini; Christopher J. Conselice; Will G. Hartley; Alice Mortlock; Chris Simpson; Aaron Wilkinson
texts
eye 7
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The properties of submillimeter galaxies (SMGs) that are fainter than the confusion limit of blank-field single-dish surveys ($S_{850} \lesssim$ 2 mJy) are poorly constrained. Using a newly developed color selection technique, Optical-Infrared Triple Color (OIRTC), that has been shown to successfully {select} such faint SMGs, we identify a sample of 2938 OIRTC-selected galaxies, dubbed Triple Color Galaxies (TCGs), in the UKIDSS-UDS field. We show that these galaxies have a median 850 $\mu$m...
Topics: Astrophysics, Cosmology and Nongalactic Astrophysics, Astrophysics of Galaxies
Source: http://arxiv.org/abs/1609.00388
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41
Sep 18, 2013
09/13
by
R. C. Livermore; T. Jones; J. Richard; R. G. Bower; R. S. Ellis; A. M. Swinbank; J. R. Rigby; Ian Smail; H. Ebeling; R. A. Crain
texts
eye 41
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We present HST/WFC3 narrowband imaging of the H-alpha emission in a sample of eight gravitationally-lensed galaxies at z = 1 - 1.5. The magnification caused by the foreground clusters enables us to obtain a median source plane spatial resolution of 360pc, as well as providing magnifications in flux ranging from ~10x to ~50x. This enables us to identify resolved star-forming HII regions at this epoch and therefore study their H-alpha luminosity distributions for comparisons with equivalent...
Source: http://arxiv.org/abs/1209.5741v1
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52
Sep 22, 2013
09/13
by
A. M. Swinbank; J. Smith; R. G. Bower; A. Bunker; I. Smail; R. S. Ellis; Graham P. Smith; J. P. Kneib; M. Sullivan; J. Allington-Smith
texts
eye 52
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In this letter, we exploit the gravitational potential of the rich cluster A2218 as a magnifying glass. We demonstrate that the magnification due to the cluster allows us to observe distant background galaxies at a comparable level of detail to galaxies at z~0.1. Using the GMOS Integral Field Unit on Gemini North we observed the spatially-resolved [OII](3727) emission line spectrum for a lensed disk-galaxy at z=1.034. Using a detailed model for the cluster mass distribution, we are able to...
Source: http://arxiv.org/abs/astro-ph/0307521v1
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46
Sep 22, 2013
09/13
by
Yusei Koyama; Ian Smail; Jaron Kurk; James E. Geach; David Sobral; Tadayuki Kodama; Fumiaki Nakata; A. M. Swinbank; Philip N. Best; Masao Hayashi; Ken-ichi Tadaki
texts
eye 46
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This paper discusses the evolution of the correlation between galaxy star formation rates (SFRs) and stellar mass (M*) over the last ~10 Gyrs, particularly focusing on its environmental dependence. We first present the mid-infrared (MIR) properties of the H-alpha-selected galaxies in a rich cluster Cl0939+4713 at z=0.4. With a MIR stacking analysis, we find that the median SFR of H-alpha emitters is higher in higher-density environment at z=0.4. We also find that star-forming galaxies in...
Source: http://arxiv.org/abs/1302.5315v2
106
106
Sep 18, 2013
09/13
by
Ian Smail; A. M. Swinbank; J. Richard; H. Ebeling; J. -P. Kneib; A. C. Edge; D. Stark; R. S. Ellis; S. Dye; G. P. Smith; C. Mullis
texts
eye 106
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We report the discovery using Hubble Space Telescope imaging and Keck spectroscopy of a very bright, highly magnified (~30*) Lyman Break Galaxy (LBG) at z=3.07 in the field of the massive z=0.33 cluster MACSJ2135.2-0102. The system comprises two high-surface brightness arcs with a maximum extent of 3", bracketing a central object which we identify as a massive early-type galaxy at z=0.73. We construct a lens model which reproduces the main features of the system using a combination of a...
Source: http://arxiv.org/abs/astro-ph/0611486v1
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31
Sep 20, 2013
09/13
by
S. Alaghband-Zadeh; S. C. Chapman; A. M. Swinbank; Ian Smail; C. M. Harrison; D. M. Alexander; C. M. Casey; R. Dave; D. Narayanan; Y. Tamura; J. Umehata
texts
eye 31
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We present two-dimensional, integral field spectroscopy covering the rest-frame wavelengths of strong optical emission lines in nine sub-mm-luminous galaxies (SMGs) at 2.0
Source: http://arxiv.org/abs/1205.5452v1
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65
Sep 23, 2013
09/13
by
J. K. Smith; A. J. Bunker; N. P. Vogt; R. G. Abraham; A. Aragon-Salamanca; R. G. Bower; I. R. Parry; R. G. Sharp; A. M. Swinbank
texts
eye 65
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In this letter we present the first 3D spectroscopic study of H-alpha emission in a z ~ 1 field galaxy with an integral field unit. Using the CIRPASS spectrograph on Gemini-South we map the spatial and velocity distribution of H-alpha emission in the z=0.819 galaxy CFRS 22.1313. We detect two H-alpha emitting regions with a velocity separation of 220+/-10 km/s. Combining the 2D map of H-alpha emission with HST F814W imaging, we determine a lower limit of 180+/-20 km/s for the rotation velocity...
Source: http://arxiv.org/abs/astro-ph/0408465v1
49
49
Sep 20, 2013
09/13
by
A. P. Thomson; R. J. Ivison; Ian Smail; A. M. Swinbank; A. Weiss; J. -P. Kneib; P. P. Papadopoulos; A. J. Baker; C. E. Sharon; G. A. van Moorsel
texts
eye 49
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We present a study using the Karl G. Jansky Very Large Array of 12CO J=1-0 emission in three strongly lensed submillimetre-selected galaxies (SMMJ16359, SMMJ14009 and SMMJ02399) at z=2.5-2.9. These galaxies span L(IR) = 10^11 - 10^13 Lsun, offering an opportunity to compare the interstellar medium of LIRGs and ULIRGs at high redshift. We estimate molecular gas masses in the range (2-40) x 10^9 Msun using a method that assumes canonical underlying brightness temperature ratios for star-forming...
Source: http://arxiv.org/abs/1207.0492v2
3
3.0
Jun 28, 2018
06/18
by
C. M. Harrison; D. M. Alexander; J. R. Mullaney; J. P. Stott; A. M. Swinbank; V. Arumugam; F. E. Bauer; R. G. Bower; A. J. Bunker; R. M. Sharples
texts
eye 3
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We present the first results from the KMOS AGN Survey at High redshift (KASHz), a VLT/KMOS integral-field spectroscopic survey of z>0.6 AGN. We present galaxy-integrated spectra of 89 X-ray AGN (Lx=10^42-10^45 erg/s), for which we observed [O III] (z=1.1-1.7) or Halpha emission (z=0.6-1.1). The targets have X-ray luminosities representative of the parent AGN population and we explore the emission-line luminosities as a function of X-ray luminosity. For the [O III] targets, ~50 per cent have...
Topics: Astrophysics, Astrophysics of Galaxies, High Energy Astrophysical Phenomena
Source: http://arxiv.org/abs/1511.00008
66
66
Sep 23, 2013
09/13
by
M. Limousin; H. Ebeling; J. Richard; A. M. Swinbank; G. P. Smith; M. Jauzac; S. Rodionov; C. -J. Ma; I. Smail; A. C. Edge; E. Jullo; J. P. Kneib
texts
eye 66
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We present results of a strong-lensing analysis of MACS J0717.5+3745 (hereafter MACS J0717), an extremely X-ray luminous galaxy cluster at z=0.55. Observations at different wavelengths reveal a complex and dynamically very active cluster, whose core is connected to a large scale filament extended over several Mpc. Using multi-passband imaging data obtained with the Hubble Space Telescope Advanced Camera for Surveys (ACS), we identify 15 multiply imaged systems across the full field of view of...
Source: http://arxiv.org/abs/1109.3301v2
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15
Jun 27, 2018
06/18
by
C. -J. Ma; I. Smail; A. M. Swinbank; J. M. Simpson; A. P. Thomson; C. -C. Chen; A. L. R. Danielson; M. Hilton; K. Tadaki; J. P. Stott; T. Kodama
texts
eye 15
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We report the results of a deep SCUBA-2 850- and 450-$\mu$m survey for dust-obscured ultra-luminous infrared galaxies (U/LIRGs) in the field of the z=1.46 cluster XCS J2215.9-1738. We detect a striking overdensity of sub-millimeter sources coincident with the core of this cluster: $\sim 3-4 \times$ higher than expected in a blank field. We use the likely radio and mid-infrared counterparts to show that the bulk of these sub-millimeter sources have spectroscopic or photometric redshifts which...
Topics: Astrophysics of Galaxies, Astrophysics, Cosmology and Nongalactic Astrophysics
Source: http://arxiv.org/abs/1504.06630
6
6.0
Jun 30, 2018
06/18
by
M. T. Huynh; A. E. Kimball; R. P. Norris; Ian Smail; K. E. Chow; K. E. K. Coppin; B. H. C. Emonts; R. J. Ivison; V. Smolcic; A. M. Swinbank
texts
eye 6
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We present the detection of $^{12}$CO(2-1) in the $z = 4.44$ submillimetre galaxy ALESS65.1 using the Australia Telescope Compact Array. A previous ALMA study of submillimetre galaxies in the Extended Chandra Deep Field South determined the redshift of this optically and near-infrared undetected source through the measurement of [CII] 157.74 $\mu$m emission. Using the luminosity of the $^{12}$CO(2-1) emission we estimate the gas mass to be $M_{\rm gas} \sim 1.7 \times 10^{10}$ ${\rm M}_\odot$....
Topics: Astrophysics of Galaxies, Astrophysics
Source: http://arxiv.org/abs/1407.0463
37
37
Sep 18, 2013
09/13
by
D. M. Alexander; W. N. Brandt; I. Smail; A. M. Swinbank; F. E. Bauer; A. W. Blain; S. C. Chapman; K. E. K. Coppin; R. J. Ivison; K. Menendez-Delmestre
texts
eye 37
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We place direct observational constraints on the black-hole masses of the cosmologically important z~2 submillimeter-emitting galaxy (SMG; f850>4mJy) population, and use measured host-galaxy masses to explore their evolutionary status. We employ the well-established virial black-hole mass estimator to 'weigh' the black holes of a sample of z~2 SMGs with broad Halpha or Hbeta emission. The average black-hole mass and Eddington ratio (eta) of the lower-luminosity broad-line SMGs (L_X~10^44...
Source: http://arxiv.org/abs/0803.0634v1
4
4.0
Jun 30, 2018
06/18
by
M. Dessauges-Zavadsky; M. Zamojski; D. Schaerer; F. Combes; E. Egami; A. M. Swinbank; J. Richard; P. Sklias; T. D. Rawle; M. Rex; J. -P. Kneib; F. Boone; A. Blain
texts
eye 4
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To extend the molecular gas measurements to typical star-forming galaxies (SFGs) with SFR < 40 Msun yr^{-1} and M* < 2.5x10^{10} Msun at z~1.5-3, we have observed CO emission with the IRAM Plateau de Bure Interferometer and 30m telescope for five strongly-lensed galaxies selected from the Herschel Lensing Survey. These observations are combined with a compilation of CO measurements from the literature. We infer the luminosity correction factors r2,1 = 0.81+/-0.20 and r3,1 = 0.57+/-0.15...
Topics: Astrophysics of Galaxies, Astrophysics
Source: http://arxiv.org/abs/1408.0816
130
130
Jul 24, 2013
07/13
by
S. C. Chapman; R. Neri; F. Bertoldi; Ian Smail; T. R. Greve; D. Trethewey; A. W. Blain; P. Cox; R. Genzel; R. J. Ivison; A. Kovacs; A. Omont A. M. Swinbank
texts
eye 130
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High-redshift, dust-obscured galaxies -- selected to be luminous in the radio but relatively faint at 850um -- appear to represent a different population from the ultra-luminous submillimeter- (submm-) bright population. They may be star-forming galaxies with hotter dust temperatures or they may have lower far-infrared luminosities and larger contributions from obscured active galactic nuclei (AGN). Here we present observations of three z~2 examples of this population, which we term submm-faint...
Source: http://arxiv.org/abs/0807.3674v1
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55
Sep 21, 2013
09/13
by
B. D. Lehmer; A. B. Lucy; D. M. Alexander; P. N. Best; J. E. Geach; C. M. Harrison; A. E. Hornschemeier; Y. Matsuda; J. R. Mullaney; Ian Smail; D. Sobral; A. M. Swinbank
texts
eye 55
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We present results from a ~100 ks Chandra observation of the 2QZ Cluster 1004+00 structure at z = 2.23 (hereafter, 2QZ Clus). 2QZ Clus was originally identified as an overdensity of four optically-selected QSOs at z = 2.23 within a 15x15 arcmin^2 region. Narrow-band imaging in the near-IR revealed that the structure contains an additional overdensity of 22 z = 2.23 Halpha-emitting galaxies (HAEs), resulting in 23 unique z = 2.23 HAEs/QSOs. Our Chandra observations reveal that 3 HAEs in addition...
Source: http://arxiv.org/abs/1301.3922v1
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59
Sep 18, 2013
09/13
by
K. E. K. Coppin; A. M. Swinbank; R. Neri; P. Cox; Ian Smail; R. S. Ellis; J. E. Geach; B. Siana; H. Teplitz; S. Dye; J. -P. Kneib; A. C. Edge; J. Richard
texts
eye 59
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We report the detection of CO(3-2) emission from a bright, gravitationally lensed Lyman Break Galaxy, LBGJ213512.73-010143 (the 'Cosmic Eye'), at z=3.07 using the Plateau de Bure Interferometer. This is only the second detection of molecular gas emission from an LBG and yields an intrinsic molecular gas mass of (2.4+/-0.4)x10^9 Mo. The lens reconstruction of the UV morphology of the LBG indicates that it comprises two components separated by ~2 kpc. The CO emission is unresolved, and appears to...
Source: http://arxiv.org/abs/0705.1721v1
6
6.0
Jun 29, 2018
06/18
by
S. L. Hamer; A. C. Edge; A. M. Swinbank; R. J. Wilman; F. Combes; P. Salomé; A. C. Fabian; C. S. Crawford; H. R. Russell; J. Hlavacek-Larrondo; B. McNamara; M. N. Bremer
texts
eye 6
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We present an Integral Field Unit survey of 73 galaxy clusters and groups with the VIsible Multi Object Spectrograph (VIMOS) on VLT. We exploit the data to determine the H$\alpha$ gas dynamics on kpc-scales to study the feedback processes occurring within the dense cluster cores. We determine the kinematic state of the ionised gas and show that the majority of systems ($\sim$ 2/3) have relatively ordered velocity fields on kpc scales that are similar to the kinematics of rotating discs and are...
Topics: Astrophysics, Cosmology and Nongalactic Astrophysics, Astrophysics of Galaxies
Source: http://arxiv.org/abs/1603.03047
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40
Sep 18, 2013
09/13
by
R. J. Ivison; Ian Smail; J. S. Dunlop; T. R. Greve; A. M. Swinbank; J. A. Stevens; A. M. J. Mortier; S. Serjeant; T. A. Targett; F. Bertoldi; A. W. Blain; S. C. Chapman
texts
eye 40
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The modest significance of most sources detected in current submm surveys can potentially compromise some analyses due to the inclusion of spurious sources in catalogues typically selected at >3.0-3.5sigma. Here, we develop and apply a dual-survey extraction technique to SCUBA and MAMBO images of the Lockman Hole. Cut above 5sigma, our catalogue of SMGs is more robust than previous samples, with a reduced likelihood of real, but faint SMGs (beneath and around the confusion limit) entering...
Source: http://arxiv.org/abs/astro-ph/0509898v1
4
4.0
Jun 27, 2018
06/18
by
R. C. Livermore; T. A. Jones; J. Richard; R. G. Bower; A. M. Swinbank; T. -T. Yuan; A. C. Edge; R. S. Ellis; L. J. Kewley; Ian Smail; K. E. K. Coppin; H. Ebeling
texts
eye 4
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We present adaptive optics-assisted integral field spectroscopy around the Ha or Hb lines of 12 gravitationally lensed galaxies obtained with VLT/SINFONI, Keck/OSIRIS and Gemini/NIFS. We combine these data with previous observations and investigate the dynamics and star formation properties of 17 lensed galaxies at z = 1-4. Thanks to gravitational magnification of 1.4 - 90x by foreground clusters, effective spatial resolutions of 40 - 700 pc are achieved. The magnification also allows us to...
Topics: Astrophysics of Galaxies, Astrophysics
Source: http://arxiv.org/abs/1503.07873
