Search Publications
Mass assembly in quiescent and star-forming galaxies since z ≃ 4 from UltraVISTA
Aussel, H.; Le Floc'h, E.; Sanders, D. B. +33 more
We estimate the galaxy stellar mass function and stellar mass density for star-forming and quiescent galaxies with 0.2 < z < 4. We construct a large, deep (Ks < 24) sample of 220 000 galaxies selected using the new UltraVISTA DR1 data release. Our analysis is based on precise 30-band photometricredshifts. By comparing these pho…
Herschel view of the Taurus B211/3 filament and striations: evidence of filamentary growth?
Martin, P. G.; Hill, T.; White, G. L. +24 more
We present first results from the Herschel Gould Belt survey for the B211/L1495 region in the Taurus molecular cloud. Thanks to their high sensitivity and dynamic range, the Herschel images reveal the structure of the dense, star-forming filament B211 with unprecedented detail, along with the presence of striations perpendicular to the filament an…
The VLT-FLAMES Tarantula Survey. VIII. Multiplicity properties of the O-type star population
Crowther, P. A.; Lennon, D. J.; Herrero, A. +14 more
Context. The Tarantula Nebula in the Large Magellanic Cloud is our closest view of a starburst region and is the ideal environment to investigate important questions regarding the formation, evolution and final fate of the most massive stars.
Aims: We analyze the multiplicity properties of the massive O-type star population observed through m…
The deepest Herschel-PACS far-infrared survey: number counts and infrared luminosity functions from combined PEP/GOODS-H observations
Berta, S.; Magnelli, B.; Nordon, R. +34 more
We present results from the deepest Herschel-Photodetector Array Camera and Spectrometer (PACS) far-infrared blank field extragalactic survey, obtained by combining observations of the Great Observatories Origins Deep Survey (GOODS) fields from the PACS Evolutionary Probe (PEP) and GOODS-Herschel key programmes. We describe data reduction and thec…
Global collapse of molecular clouds as a formation mechanism for the most massive stars
Avison, A.; André, Ph.; Schneider, N. +8 more
The relative importance of primordial molecular cloud fragmentation versus large-scale accretion still remains to be assessed in the context of massive core/star formation. Studying the kinematics of the dense gas surrounding massive-star progenitors can tell us the extent to which large-scale flow of material impacts the growth in mass of star-fo…
Planck intermediate results. V. Pressure profiles of galaxy clusters from the Sunyaev-Zeldovich effect
Böhringer, H.; Kneissl, R.; Dahle, H. +215 more
Taking advantage of the all-sky coverage and broadfrequency range of the Planck satellite, we study the Sunyaev-Zeldovich (SZ) and pressure profiles of 62 nearby massive clusters detected at high significance in the 14-month nominal survey. Careful reconstruction of the SZ signal indicates that most clusters are individually detected at least out …
A Herschel [C ii] Galactic plane survey. I. The global distribution of ISM gas components
Goldsmith, P. F.; Langer, W. D.; Pineda, J. L. +1 more
Context. The [C ii] 158 µm line is an important tool for understanding the life cycle of interstellar matter. Ionized carbon is present in a variety of phases of the interstellar medium (ISM), including the diffuse ionized medium, warm and cold atomic clouds, clouds in transition from atomic to molecular, and dense and warm photon dominated …
DUst around NEarby Stars. The survey observational results
Heras, A. M.; Fridlund, M.; Olofsson, G. +47 more
Context. Debris discs are a consequence of the planet formation process and constitute the fingerprints of planetesimal systems. Their solar system counterparts are the asteroid and Edgeworth-Kuiper belts.
Aims: The DUNES survey aims at detecting extra-solar analogues to the Edgeworth-Kuiper belt around solar-type stars, putting in this way t…
Spectrophotometric time series of SN 2011fe from the Nearby Supernova Factory
Aldering, G.; Fakhouri, H. K.; Kowalski, M. +36 more
We present 32 epochs of optical (3300-9700 Å) spectrophotometric observations of the nearby quintessential "normal" type Ia supernova (SN Ia) SN 2011fe in the galaxy M101, extending from -15 to +97 d with respect to B-band maximum, obtained by the Nearby Supernova Factory collaboration. SN 2011fe is the closest (µ = 29.04) and brightest (B
Spectroscopic analysis of DA white dwarfs with 3D model atmospheres
Steffen, M.; Ludwig, H. -G.; Tremblay, P. -E. +1 more
We present the first grid of mean three-dimensional (3D) spectra for pure-hydrogen (DA) white dwarfs based on 3D model atmospheres. We use CO5BOLD radiation-hydrodynamics 3D simulations instead of the mixing-length theory for the treatment of convection. The simulations cover the effective temperature range of 6000 < Teff …