10.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2k papers
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23 papers · 2 filters
Insights into the chemical composition of the metal-poor Milky Way halo globular cluster NGC 6426
M. Hanke, A. Koch, C. J. Hansen +1
We present our detailed spectroscopic analysis of the chemical composition of four red giant stars in the halo globular cluster NGC 6426. We obtained high-resolution spectra using…
SINFONI-HiZELS: The dynamics, merger rates & metallicity gradients of `typical' star-forming galaxies at = 0.8-2.2
J. Molina, E. Ibar, A. M. Swinbank +5
We present adaptive optics (AO) assisted SINFONI integral field unit (IFU) spectroscopy of eleven H emitting galaxies selected from the High-Z Emission Line Survey (HiZELS). We…
A large H survey of star formation in relaxed and merging galaxy cluster environments at
Andra Stroe, David Sobral, Ana Afonso +4
We present the first results from the largest H survey of star formation and AGN activity in galaxy clusters. Using 9 different narrow band filters, we select H emitt…
Cosmic Web of Galaxies in the COSMOS Field: Public Catalog and Different Quenching for Centrals and Satellites
Behnam Darvish, Bahram Mobasher, D. Christopher Martin +5
We use a mass complete (log() 9.6) sample of galaxies with accurate photometric redshifts in the COSMOS field to construct the density field and the cosmic…
The structural and size evolution of star-forming galaxies over the last 11 Gyrs
Ana Paulino-Afonso, David Sobral, Fernando Buitrago +1
We present new results on the evolution of rest-frame blue/UV sizes and Sersic indices of H-selected star-forming galaxies over the last 11 Gyrs. We investigate how the perceive…
Another look at the size of the low-surface brightness galaxy VCC 1661 in the Virgo Cluster
Andreas Koch, Christine S. Black, R. Michael Rich +3
We present new wide-field images of the low-surface brightness Virgo Cluster dwarf galaxy VCC 1661. The extant literature lists a broad range of radii for this object, covering a f…
TOPoS: III. An ultra iron-poor multiple CEMP system
E. Caffau, P. Bonifacio, M. Spite +15
One of the primary objectives of the TOPoS survey is to search for the most metal-poor stars. Our search has led to the discovery of one of the most iron-poor objects known, SDSS\,…
The growth of typical star-forming galaxies and their super massive black holes across cosmic time since z~2
João Calhau, David Sobral, Andra Stroe +5
Understanding galaxy formation and evolution requires studying the interplay between the growth of galaxies and the growth of their black holes across cosmic time. Here we explore…
Evidence for multiple populations in the intermediate age cluster Lindsay 1 in the SMC
K Hollyhead, N Kacharov, C Lardo +6
Lindsay 1 is an intermediate age (approx 8 Gyr) massive cluster in the Small Magellanic Cloud (SMC). Using VLT FORS2 spectra of 16 probable cluster members on the lower RGB of the…
The CALYMHA survey: Lya luminosity function and global escape fraction of Lya photons at z=2.23
David Sobral, Jorryt Matthee, Philip Best +6
We present the CAlibrating LYMan- with H (CALYMHA) pilot survey and new results on Lyman- (Lya) selected galaxies at z~2. We use a custom-built Lya narrow-band filter at t…
[OIII] emission line as a tracer of star-forming galaxies at high redshifts: Comparison between H and [OIII] emitters at =2.23 in HiZELS
T. L. Suzuki, T. Kodama, D. Sobral +10
We investigate the properties of =2.23 H and [OIII]5007 emitters using the narrow-band-selected samples obtained from the High- Emission Line Survey (HiZELS: Sobral et…
Probing the intra-group medium of a z = 0.28 galaxy group
R. Bielby, N. H. M. Crighton, M. Fumagalli +4
We present new MUSE observations of a galaxy group probed by a background quasar. The quasar sightline passes between multiple galaxies, whilst showing at the same redshif…
The Lyman-alpha luminosity function at z=5.7-6.6 and the steep drop of the faint end: implications for reionization
Sérgio Santos, David Sobral, Jorryt Matthee
We present new results from the widest narrow band survey search for Lyman-alpha (Lya) emitters at z=5.7, just after reionization. We survey a total of 7 deg spread over the CO…
Effects of Local Environment and Stellar Mass on Galaxy Quenching out to z~3
Behnam Darvish, Bahram Mobasher, David Sobral +4
We study the effects of local environment and stellar mass on galaxy properties using a mass complete sample of quiescent and star-forming systems in the COSMOS field at $z\lesssim…
The production and escape of Lyman-Continuum radiation from star-forming galaxies at z~2 and their redshift evolution
Jorryt Matthee, David Sobral, Philip Best +4
We study the production rate of ionizing photons of a sample of 588 H emitters (HAEs) and 160 Lyman- emitters (LAEs) at in the COSMOS field in order to assess the imp…
The KMOS Redshift One Spectroscopic Survey (KROSS): The Tully-Fisher Relation at z ~ 1
Alfred L. Tiley, John P. Stott, A. M. Swinbank +11
We present the stellar mass (), and K-corrected -band absolute magnitude () Tully-Fisher relations (TFRs) for sub-samples of the 584 galaxies spatially resolved in…
The Nature of H[O{\sc iii}] and [O{\sc ii}] emitters to with HiZELS: stellar mass functions and the evolution of EWs
Ali Ahmad Khostovan, David Sobral, Bahram Mobasher +5
We investigate the properties of narrow-band selected galaxies with strong H[OIII] and [OII] nebular emission lines from the High- Emission Line Survey (HiZELS) b…
Before the Bar: Kinematic Detection of A Spheroidal Metal-Poor Bulge Component
Andrea Kunder, R. M. Rich, J. Storm +7
We present 947 radial velocities of RR Lyrae variable stars in four fields located toward the Galactic bulge, observed within the data from the ongoing Bulge RR Lyrae Radial Veloci…
The VLT LEGA-C Spectroscopic Survey: The Physics of Galaxies at a Lookback Time of 7 Gyr
A. van der Wel, K. Noeske, R. Bezanson +17
The Large Early Galaxy Census (LEGA-C) is a Public Spectroscopic Survey of -band selected galaxies at redshifts with stellar masses M_star > 1e10M_sun, co…
The nature of H-alpha star-forming galaxies at z~0.4 in and around Cl 0939+4713: the environment matters
David Sobral, Andra Stroe, Yusei Koyama +5
Cluster star-forming galaxies are found to have an excess of Far-Infrared emission relative to H-alpha (Ha), when compared to those in the field, which could be caused by intense A…
Lyman Alpha Signatures from Direct Collapse Black Holes
Mark Dijkstra, Max Gronke, David Sobral
`Direct collapse black holes' (DCBHs) provide possible seeds for supermassive black holes that exist at redshifts as high as z~7. We study Lyman Alpha (Lya) radiative transfer thro…
The CALYMHA survey: Ly escape fraction and its dependence on galaxy properties at
Jorryt Matthee, David Sobral, Ivàn Oteo +4
We present the first results from our CAlibrating LYMan- with H (CALYMHA) pilot survey at the Isaac Newton Telescope. We measure Ly emission for 488 H selected galaxies…
The most luminous H emitters at z~0.8-2.23 from HiZELS: evolution of AGN and star-forming galaxies
David Sobral, Saul A. Kohn, Philip N. Best +5
We use new near-infrared spectroscopic observations to investigate the nature and evolution of the most luminous Hα(Ha) emitters at z~0.8-2.23, which evolve strongly in number dens…