Search Publications
The Herschel view of the dominant mode of galaxy growth from z = 4 to the present day
Magnelli, B.; Aussel, H.; Daddi, E. +20 more
We present an analysis of the deepest Herschel images in four major extragalactic fields GOODS-North, GOODS-South, UDS, and COSMOS obtained within the GOODS-Herschel and CANDELS-Herschel key programs. The star formation picture provided by a total of 10 497 individual far-infrared detections is supplemented by the stacking analysis of a mass compl…
The VIMOS Ultra-Deep Survey: ~10 000 galaxies with spectroscopic redshifts to study galaxy assembly at early epochs 2 < z ≃ 6
Maccagni, D.; Cimatti, A.; Ilbert, O. +42 more
We present the VIMOS Ultra Deep Survey (VUDS), a spectroscopic redshift survey of ~10 000 very faint galaxies to study the main phase of galaxy assembly in 2 < z ≃ 6. The survey covers 1 deg2 in three separate fields: COSMOS, ECDFS, and VVDS-02h, with the selection of targets based on an inclusive combination of photometric redshifts…
Faint AGNs at z > 4 in the CANDELS GOODS-S field: looking for contributors to the reionization of the Universe
Dickinson, M.; Salvato, M.; Fiore, F. +14 more
Context. Establishing the number of faint active galactic nuclei (AGNs) at z = 4-6 is crucial to understanding their cosmological importance as main contributors to the reionization of the Universe.
Aims: In order to derive the AGN contribution to the cosmological ionizing emissivity we have selected faint AGN candidates at z> 4 in the CAN…
Using Lyman-α to detect galaxies that leak Lyman continuum
Verhamme, Anne; Hayes, Matthew; Schaerer, Daniel +1 more
Aims: We propose to infer the output of the ionising continuum-leaking properties of galaxies based upon their Lyα line profiles.
Methods: We carried out Lyα radiation transfer calculations in two models of H ii regions. These models are porous to ionising continuum escape: 1) we define Lyman-continuum (LyC) optically thin star clusters,…
The galaxy stellar mass function at 3.5 ≤z ≤ 7.5 in the CANDELS/UDS, GOODS-South, and HUDF fields
Ferguson, H. C.; Finkelstein, S. L.; Giavalisco, M. +38 more
Context. The form and evolution of the galaxy stellar mass function (GSMF) at high redshifts provide crucial information on star formation history and mass assembly in the young Universe, close or even prior to the epoch of reionization.
Aims: We used the unique combination of deep optical/near-infrared/mid-infrared imaging provided by HST, S…
The MUSE 3D view of the Hubble Deep Field South
Dreizler, S.; Steinmetz, M.; Carollo, C. M. +35 more
We observed Hubble Deep Field South with the new panoramic integral-field spectrograph MUSE that we built and have just commissioned at the VLT. The data cube resulting from 27 h of integration covers one arcmin2 field of view at an unprecedented depth with a 1σ emission-line surface brightness limit of 1 × 10-19 erg s-1…
Evolution of the specific star formation rate function at z< 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS
Aussel, H.; Le Floc'h, E.; Sanders, D. B. +21 more
The relation between the stellar mass (M⋆) and the star formation rate (SFR) characterizes how the instantaneous star formation is determined by the galaxy past star formation history and by the growth of the dark matter structures. We deconstruct the M⋆-SFR plane by measuring the specific SFR functions in several stellar mass bins from z = 0.2 ou…
T-PHOT: A new code for PSF-matched, prior-based, multiwavelength extragalactic deconfusion photometry
Elbaz, D.; Shu, X.; Ferguson, H. C. +19 more
Context. The advent of deep multiwavelength extragalactic surveys has led to the necessity for advanced and fast methods for photometric analysis. In fact, codes which allow analyses of the same regions of the sky observed at different wavelengths and resolutions are becoming essential to thoroughly exploit current and future data. In this context…
Anatomy of the AGN in NGC 5548. I. A global model for the broadband spectral energy distribution
Kaastra, J. S.; Harrison, F. A.; Kriss, G. A. +24 more
An extensive multi-satellite campaign on NGC 5548 has revealed this archetypal Seyfert-1 galaxy to be in an exceptional state of persistent heavy absorption. Our observations taken in 2013-2014 with XMM-Newton, Swift, NuSTAR, INTEGRAL, Chandra, HST and two ground-based observatories have together enabled us to establish that this unexpected phenom…
The VLT-FLAMES Tarantula Survey. XXII. Multiplicity properties of the B-type stars
Howarth, I. D.; Dufton, P. L.; Simón-Díaz, S. +7 more
We investigate the multiplicity properties of 408 B-type stars observed in the 30 Doradus region of the Large Magellanic Cloud with multi-epoch spectroscopy from the VLT-FLAMES Tarantula Survey (VFTS). We use a cross-correlation method to estimate relative radial velocities from the helium and metal absorption lines for each of our targets. Object…