All Outputs (28)

The relationship between gas and galaxies at z < 1 using the Q0107 quasar triplet (2021)
Journal Article
Beckett, A., Morris, S. L., Fumagalli, M., Bielby, R., Tejos, N., Schaye, J., …Cantalupo, S. (2021). The relationship between gas and galaxies at z < 1 using the Q0107 quasar triplet. Monthly Notices of the Royal Astronomical Society, 506(2), 2574-2602. https://doi.org/10.1093/mnras/stab1630

We study the distribution and dynamics of the circumgalactic and intergalactic medium using a dense galaxy survey covering the field around the Q0107 system, a unique z ≈ 1 projected quasar triplet. With full Ly α coverage along all three lines-of-si... Read More about The relationship between gas and galaxies at z < 1 using the Q0107 quasar triplet.

The nature of sub-millimetre galaxies I: a comparison of AGN and star-forming galaxy SED fits (2021)
Journal Article
Shanks, T., Ansarinejad, B., Bielby, R., Heywood, I., Metcalfe, N., & Wang, L. (2021). The nature of sub-millimetre galaxies I: a comparison of AGN and star-forming galaxy SED fits. Monthly Notices of the Royal Astronomical Society, 505(1), 1509-1529. https://doi.org/10.1093/mnras/stab1226

High-redshift sub-millimetre galaxies (SMGs) are usually assumed to be powered by star formation. However, it has been clear for some time that >20 per cent of such sourcesbrighter than ≈3 mJy host quasars. Here, we analyse a complete sample of 12 su... Read More about The nature of sub-millimetre galaxies I: a comparison of AGN and star-forming galaxy SED fits.

MUSE Analysis of Gas around Galaxies (MAGG) - II: Metal-enriched halo gas around z ∼ 1 galaxies (2020)
Journal Article
Dutta, R., Fumagalli, M., Fossati, M., Lofthouse, E. K., Prochaska, J. X., Battaia, F. A., …O’Meara, J. M. (2020). MUSE Analysis of Gas around Galaxies (MAGG) - II: Metal-enriched halo gas around z ∼ 1 galaxies. Monthly Notices of the Royal Astronomical Society, 499(4), 5022-5046. https://doi.org/10.1093/mnras/staa3147

We present a study of the metal-enriched cool halo gas traced by Mg II absorption around 228 galaxies at z ∼ 0.8–1.5 within 28 quasar fields from the MUSE Analysis of Gas around Galaxies survey. We observe no significant evolution in the Mg II equiva... Read More about MUSE Analysis of Gas around Galaxies (MAGG) - II: Metal-enriched halo gas around z ∼ 1 galaxies.

Quasar Sightline and Galaxy Evolution (QSAGE) survey - II. Galaxy overdensities around UV luminous quasars at z = 1-2 (2020)
Journal Article
Stott, J., Bielby, R., Cullen, F., Burchett, J., Tejos, N., Fumagalli, M., …Prochaska, J. (2020). Quasar Sightline and Galaxy Evolution (QSAGE) survey - II. Galaxy overdensities around UV luminous quasars at z = 1-2. Monthly Notices of the Royal Astronomical Society, 497(3), 3083-3096. https://doi.org/10.1093/mnras/staa2096

We demonstrate that the UV brightest quasars at z = 1–2 live in overdense environments. This is based on an analysis of deep Hubble Space Telescope WFC3 G141 grism spectroscopy of the galaxies along the lines-of-sight to UV luminous quasars in the re... Read More about Quasar Sightline and Galaxy Evolution (QSAGE) survey - II. Galaxy overdensities around UV luminous quasars at z = 1-2.

Into the Lyα jungle: exploring the circumgalactic medium of galaxies at z ∼ 4 − 5 with MUSE (2020)
Journal Article
Bielby, R. M., Fumagalli, M., Fossati, M., Rafelski, M., Oppenheimer, B., Cantalupo, S., …Peroux, C. (2020). Into the Lyα jungle: exploring the circumgalactic medium of galaxies at z ∼ 4 − 5 with MUSE. Monthly Notices of the Royal Astronomical Society, 493(4), 5336-5356. https://doi.org/10.1093/mnras/staa546

We present a study of the galaxy environment of 9 strong H I+C IV absorption line systems (16.2 < log(N(HI)) < 21.2) spanning a wide range in metallicity at z ∼ 4 − 5, using MUSE integral field and X-Shooter spectroscopic data collected in a z ≈ 5.26... Read More about Into the Lyα jungle: exploring the circumgalactic medium of galaxies at z ∼ 4 − 5 with MUSE.

MUSE Analysis of Gas around Galaxies (MAGG) - I: Survey design and the environment of a near pristine gas cloud at z ≈ 3.5 (2019)
Journal Article
Lofthouse, E. K., Fumagalli, M., Fossati, M., O’Meara, J. M., Murphy, M. T., Christensen, L., …Morris, S. L. (2020). MUSE Analysis of Gas around Galaxies (MAGG) - I: Survey design and the environment of a near pristine gas cloud at z ≈ 3.5. Monthly Notices of the Royal Astronomical Society, 491(2), 2057-2074. https://doi.org/10.1093/mnras/stz3066

We present the design, methods, and first results of the MUSE Analysis of Gas around Galaxies (MAGG) survey, a large programme on the Multi Unit Spectroscopic Explorer (MUSE) instrument at the Very Large Telescope (VLT) which targets 28 z > 3.2 quasa... Read More about MUSE Analysis of Gas around Galaxies (MAGG) - I: Survey design and the environment of a near pristine gas cloud at z ≈ 3.5.

Overview of the DESI Legacy Imaging Surveys (2019)
Journal Article
Dey, A., Schlegel, D. J., Lang, D., Blum, R., Burleigh, K., Fan, X., …Zhou, Z. (2019). Overview of the DESI Legacy Imaging Surveys. Astronomical Journal, 157(5), Article 168. https://doi.org/10.3847/1538-3881/ab089d

The DESI Legacy Imaging Surveys (http://legacysurvey.org/) are a combination of three public projects (the Dark Energy Camera Legacy Survey, the Beijing–Arizona Sky Survey, and the Mayall z-band Legacy Survey) that will jointly image ≈14,000 deg2 of... Read More about Overview of the DESI Legacy Imaging Surveys.

Quasar Sightline and Galaxy Evolution (QSAGE) survey - I. The galaxy environment of O VI absorbers up to z = 1.4 around PKS 0232-04 (2019)
Journal Article
Bielby, R., Stott, J., Cullen, F., Tripp, T., Burchett, J., Fumagalli, M., …Prochaska, J. (2019). Quasar Sightline and Galaxy Evolution (QSAGE) survey - I. The galaxy environment of O VI absorbers up to z = 1.4 around PKS 0232-04. Monthly Notices of the Royal Astronomical Society, 486(1), 21-41. https://doi.org/10.1093/mnras/stz774

We present the first results from a study of O VI absorption around galaxies at z < 1.44 using data from a near-infrared grism spectroscopic Hubble Space Telescope Large Programme, the Quasar Sightline and Galaxy Evolution (QSAGE) survey. QSAGE is th... Read More about Quasar Sightline and Galaxy Evolution (QSAGE) survey - I. The galaxy environment of O VI absorbers up to z = 1.4 around PKS 0232-04.

Cosmic dance at z ~ 3: Detecting the host galaxies of the dual AGN system LBQS 0302–0019 and Jil with HAWK-I+GRAAL (2018)
Journal Article
Husemann, B., Bielby, R., Jahnke, K., Arrigoni-Battaia, F., Worseck, G., Shanks, T., …Scholtz, J. (2018). Cosmic dance at z ~ 3: Detecting the host galaxies of the dual AGN system LBQS 0302–0019 and Jil with HAWK-I+GRAAL. Astronomy & Astrophysics, 614, Article L2. https://doi.org/10.1051/0004-6361/201833363

We recently discovered that the luminous radio-quiet quasi-stellar objects (QSO) LBQS 0302–0019 at z = 3.286 is likely accompanied by an obscured AGN at 20 kpc projected distance, which we dubbed Jil. It represents the tightest candidate system of an... Read More about Cosmic dance at z ~ 3: Detecting the host galaxies of the dual AGN system LBQS 0302–0019 and Jil with HAWK-I+GRAAL.

Hubble Space Telescope Wide Field Camera 3 Observations of Escaping Lyman Continuum Radiation from Galaxies and Weak AGN at Redshifts z ∼ 2.3–4.1 (2018)
Journal Article
Smith, B. M., Windhorst, R. A., Jansen, R. A., Cohen, S. H., Jiang, L., Dijkstra, M., …Silk, J. I. (2018). Hubble Space Telescope Wide Field Camera 3 Observations of Escaping Lyman Continuum Radiation from Galaxies and Weak AGN at Redshifts z ∼ 2.3–4.1. Astrophysical Journal, 853(2), Article 191. https://doi.org/10.3847/1538-4357/aaa3dc

We present observations of escaping Lyman Continuum (LyC) radiation from 34 massive star-forming galaxies (SFGs) and 12 weak AGN with reliably measured spectroscopic redshifts at $z\simeq 2.3\mbox{--}4.1$. We analyzed Hubble Space Telescope (HST) Wid... Read More about Hubble Space Telescope Wide Field Camera 3 Observations of Escaping Lyman Continuum Radiation from Galaxies and Weak AGN at Redshifts z ∼ 2.3–4.1.

The VLT LBG redshift survey – VI. Mapping H i in the proximity of z ∼ 3 LBGs with X-Shooter (2017)
Journal Article
Bielby, R., Shanks, T., Crighton, N., Bornancini, C., Infante, L., Lambas, D., …Tummuangpak, P. (2017). The VLT LBG redshift survey – VI. Mapping H i in the proximity of z ∼ 3 LBGs with X-Shooter. Monthly Notices of the Royal Astronomical Society, 471(2), 2174-2186. https://doi.org/10.1093/mnras/stx1772

We present an analysis of the spatial distribution and dynamics of neutral hydrogen gas around galaxies using new X-Shooter observations of z ∼ 2.5–4 quasars. Adding the X-Shooter data to our existing data set of high-resolution quasar spectroscopy,... Read More about The VLT LBG redshift survey – VI. Mapping H i in the proximity of z ∼ 3 LBGs with X-Shooter.

Probing the intra-group medium of a z = 0.28 galaxy group (2017)
Journal Article
Bielby, R., Crighton, N., Fumagalli, M., Morris, S., Stott, J., Tejos, N., & Cantalupo, S. (2017). Probing the intra-group medium of a z = 0.28 galaxy group. Monthly Notices of the Royal Astronomical Society, 468(2), 1373-1386. https://doi.org/10.1093/mnras/stx528

We present new MUSE observations of a galaxy group probed by a background quasar. The quasar sightline passes between multiple z = 0.28 galaxies, whilst showing at the same redshift low-ionized metal line species, including Ca ii, Mg i, Mg ii and Fe ... Read More about Probing the intra-group medium of a z = 0.28 galaxy group.

The 2QDES Pilot : The luminosity and redshift dependence of quasar clustering (2016)
Journal Article
Chehade, B., Shanks, T., Findlay, J., Metcalfe, N., Sawangwit, U., Irwin, M., …Bielby, R. (2016). The 2QDES Pilot : The luminosity and redshift dependence of quasar clustering. Monthly Notices of the Royal Astronomical Society, 459(2), 1179-1200. https://doi.org/10.1093/mnras/stw616

We present a new redshift survey, the 2dF Quasar Dark Energy Survey pilot (2QDESp), which consists of ≈10 000 quasars from ≈150 deg2 of the southern sky, based on VST-ATLAS imaging and 2dF/AAOmega spectroscopy. Combining our optical photometry with t... Read More about The 2QDES Pilot : The luminosity and redshift dependence of quasar clustering.

The VLT LBG redshift survey - V. Characterizing the z = 3.1 Lyman α emitter population (2016)
Journal Article
Bielby, R., Tummuangpak, P., Shanks, T., Francke, H., Crighton, N., Bañados, E., …Orsi, A. (2016). The VLT LBG redshift survey - V. Characterizing the z = 3.1 Lyman α emitter population. Monthly Notices of the Royal Astronomical Society, 456(4), 4061-4080. https://doi.org/10.1093/mnras/stv2914

We present a survey of z ∼ 3 Lyα emitters (LAEs) within the fields of the VLT Lyman break galaxies (LBG) redshift survey. The data encompass five independent survey fields co-spatial with spectroscopic LBG data and covering a larger total area than p... Read More about The VLT LBG redshift survey - V. Characterizing the z = 3.1 Lyman α emitter population.

Non-linearity and environmental dependence of the star-forming galaxies main sequence (2015)
Journal Article
Erfanianfar, G., Popesso, P., Finoguenov, A., Wilman, D., Wuyts, S., Biviano, A., …Pozzi, F. (2016). Non-linearity and environmental dependence of the star-forming galaxies main sequence. Monthly Notices of the Royal Astronomical Society, 455(3), 2839-2851. https://doi.org/10.1093/mnras/stv2485

Using data from four deep fields (COSMOS, AEGIS, ECDFS, and CDFN), we study the correlation between the position of galaxies in the star formation rate (SFR) versus stellar mass plane and local environment at z < 1.1. To accurately estimate the galax... Read More about Non-linearity and environmental dependence of the star-forming galaxies main sequence.

Towards the statistical detection of the warm-hot intergalactic medium in intercluster filaments of the cosmic web (2015)
Journal Article
Tejos, N., Prochaska, J., Crighton, N., Morris, S., Werk, J., Theuns, T., …Finn, C. (2016). Towards the statistical detection of the warm-hot intergalactic medium in intercluster filaments of the cosmic web. Monthly Notices of the Royal Astronomical Society, 455(3), 2662-2697. https://doi.org/10.1093/mnras/stv2376

Modern analyses of structure formation predict a universe tangled in a ‘cosmic web’ of dark matter and diffuse baryons. These theories further predict that at low z, a significant fraction of the baryons will be shock-heated to T ∼ 105–107 K yielding... Read More about Towards the statistical detection of the warm-hot intergalactic medium in intercluster filaments of the cosmic web.

The evolution of star formation activity in galaxy groups (2014)
Journal Article
Erfanianfar, G., Popesso, P., Finoguenov, A., Wuyts, S., Wilman, D., Biviano, A., …Pozzi, F. (2014). The evolution of star formation activity in galaxy groups. Monthly Notices of the Royal Astronomical Society, 445(3), 2725-2745. https://doi.org/10.1093/mnras/stu1883

We study the evolution of the total star formation (SF) activity, total stellar mass (ΣM*) and halo occupation distribution (HOD) in massive haloes by using one of the largest X-ray selected sample of galaxy groups with secure spectroscopic identific... Read More about The evolution of star formation activity in galaxy groups.

The Very Large Telescope Lyman-Break Galaxy Redshift Survey – IV. Gas and galaxies at z ∼ 3 in observations and simulations (2014)
Journal Article
Tummuangpak, P., Bielby, R., Shanks, T., Theuns, T., Crighton, N., Francke, H., & Infante, L. (2014). The Very Large Telescope Lyman-Break Galaxy Redshift Survey – IV. Gas and galaxies at z ∼ 3 in observations and simulations. Monthly Notices of the Royal Astronomical Society, 442(3), 2094-2115. https://doi.org/10.1093/mnras/stu828

We use a combination of observations and simulation to study the relationship between star-forming galaxies and the intergalactic medium at z ≈ 3. The observed star-forming galaxy sample is based on spectroscopic redshift data taken from a combinatio... Read More about The Very Large Telescope Lyman-Break Galaxy Redshift Survey – IV. Gas and galaxies at z ∼ 3 in observations and simulations.

The WIRCam Deep Survey. II. Mass selected clustering (2014)
Journal Article
Bielby, R., Gonzalez-Perez, V., McCracken, H., Ilbert, O., Daddi, E., Le Fèvre, O., …Willott, C. (2014). The WIRCam Deep Survey. II. Mass selected clustering. Astronomy & Astrophysics, 568, Article A24. https://doi.org/10.1051/0004-6361/201322814

We present an analysis of the clustering of galaxies from z ≈ 2 to the present day using the WIRCam Deep Survey (WIRDS). WIRDS combines deep optical data from the CFHTLS Deep fields with its own deep near-infrared data, providing a photometric data-s... Read More about The WIRCam Deep Survey. II. Mass selected clustering.

The VLT LBG Redshift Survey - III. The clustering and dynamics of Lyman-break galaxies at z~3 (2013)
Journal Article
Bielby, R., Hill, M., Shanks, T., Crighton, N., Infante, L., Bornancini, C., …Weilbacher, P. (2013). The VLT LBG Redshift Survey - III. The clustering and dynamics of Lyman-break galaxies at z~3. Monthly Notices of the Royal Astronomical Society, 430(1), 425-449. https://doi.org/10.1093/mnras/sts639

We present a catalogue of 2135 galaxy redshifts from the VLT LBG Redshift Survey (VLRS), a spectroscopic survey of z ≈ 3 galaxies in wide fields centred on background quasi-stellar objects. We have used deep optical imaging to select galaxies via the... Read More about The VLT LBG Redshift Survey - III. The clustering and dynamics of Lyman-break galaxies at z~3.