Search Publications
UltraVISTA: a new ultra-deep near-infrared survey in COSMOS
Sutherland, W.; Milvang-Jensen, B.; Fynbo, J. P. U. +18 more
In this paper we describe the first data release of the UltraVISTA near-infrared imaging survey of the COSMOS field. We summarise the key goals and design of the survey and provide a detailed description of our data reduction techniques. We provide stacked, sky-subtracted images in YJHKs and narrow-band filters constructed from data col…
The ACS survey of Galactic globular clusters. XII. Photometric binaries along the main sequence
Moretti, A.; Anderson, J.; Milone, A. P. +15 more
Context. The fraction of binary stars is an important ingredient to interpret globular cluster dynamical evolution and their stellar population.
Aims: We investigate the properties of main-sequence binaries measured in a uniform photometric sample of 59 Galactic globular clusters that were observed by HST WFC/ACS as a part of the Globular Clu…
Temporal variations in the evaporating atmosphere of the exoplanet HD 189733b
Ehrenreich, D.; Lecavelier des Etangs, A.; Bourrier, V. +8 more
Atmospheric escape has been detected from the exoplanet
A chemical model for the atmosphere of hot Jupiters
Agúndez, M.; Hersant, F.; Dobrijevic, M. +5 more
Context. The atmosphere of hot Jupiters can be probed by primary transit and secondary eclipse spectroscopy. Owing to the intense UV irradiation, mixing, and circulation, their chemical composition is maintained out of equilibrium and must be modeled with kinetic models.
Aims: Our purpose is to release a chemical network and the associated ra…
Star-formation laws in luminous infrared galaxies. New observational constraints on models
Colina, L.; Planesas, P.; Arribas, S. +5 more
Context. The observational study of star-formation relations in galaxies is central for unraveling the related physical processes that are at work on local and global scales. It is still debated whether star formation can be described by a universal law that remains valid in different populations of galaxies.
Aims: We aim to expand the sample…
Age and helium content of the open cluster NGC 6791 from multiple eclipsing binary members. II. Age dependencies and new insights
Grundahl, F.; Milone, A. P.; Stello, D. +11 more
Context. Models of stellar structure and evolution can be constrained by measuring accurate parameters of detached eclipsing binaries in open clusters. Multiple binary stars provide the means to determine helium abundances in these old stellar systems, and in turn, to improve estimates of their age.
Aims: In the first paper of this series, we…
Faint high-redshift AGN in the Chandra deep field south: the evolution of the AGN luminosity function and black hole demography
Pannella, M.; Fiore, F.; Castellano, M. +14 more
Context. We present detection and analysis of faint X-ray sources in the Chandra deep field south (CDFS) using the 4 Ms Chandra observation.
Aims: We place constraints on active galactic nuclei (AGN) luminosity functions at z = 3-7, its cosmological evolution, and high-redshift black hole and AGN demography.
Methods: We use a new detecti…
Hint of a transiting extended atmosphere on 55 Cancri b
Moutou, C.; Bonfils, X.; Ehrenreich, D. +9 more
The naked-eye star
The dominant role of mergers in the size evolution of massive early-type galaxies since z ~ 1
Kneib, J. -P.; Aussel, H.; Cimatti, A. +60 more
Aims: The role of galaxy mergers in massive galaxy evolution, and in particular to mass assembly and size growth, remains an open question. In this paper we measure the merger fraction and rate, both minor and major, of massive early-type galaxies (M ⋆ ≥ 1011 M⊙) in the COSMOS field, and study their role in m…
Dust temperature and CO → H2 conversion factor variations in the SFR-M∗ plane
Berta, S.; Magnelli, B.; Nordon, R. +15 more
Deep Herschel PACS/SPIRE imaging and 12CO(2-1) line luminosities from the IRAM Plateau de Bure Interferometer are combined for a sample of 17 galaxies at z > 1 from the GOODS-N field. The sample includes galaxies both on and above the main sequence (MS) traced by star-forming galaxies in the SFR-M∗ plane. The far-infrared …