Search Publications
The Great Observatories Origins Deep Survey. VLT/VIMOS spectroscopy in the GOODS-south field: Part II
Popesso, P.; Cesarsky, C.; Dickinson, M. +10 more
Context. We present the full data set of the VIsible Multi-Object Spectrograph (VIMOS) spectroscopic campaign of the ESO/GOODS program in the Chandra Deep Field South (CDFS), which complements the FORS2 ESO/GOODS spectroscopic campaign.
Aims: The ESO/GOODS spectroscopic programs are aimed at reaching signal-to-noise ratios adequate to measure…
PHAT: PHoto-z Accuracy Testing
Ilbert, O.; Wolf, C.; Abdalla, F. B. +22 more
Context. Photometric redshifts (photo-z's) have become an essential tool in extragalactic astronomy. Many current and upcoming observing programmes require great accuracy of photo-z's to reach their scientific goals.
Aims: Here we introduce PHAT, the PHoto-z Accuracy Testing programme, an international initiative to test and compare different…
The first Herschel view of the mass-SFR link in high-z galaxies
Berta, S.; Magnelli, B.; Nordon, R. +37 more
Aims: We exploit deep observations of the GOODS-N field taken with PACS, the Photodetector Array Camera and Spectrometer, onboard of Herschel, as part of the PACS evolutionary probe guaranteed time (PEP), to study the link between star formation and stellar mass in galaxies to z ~ 2.
Methods: Starting from a stellar mass - selected sampl…
Filamentary structures and compact objects in the Aquila and Polaris clouds observed by Herschel
Olofsson, G.; Miville-Deschênes, M. -A.; Abergel, A. +36 more
Our PACS and SPIRE images of the Aquila Rift and part of the Polaris Flare regions, taken during the science demonstration phase of Herschel discovered fascinating, omnipresent filamentary structures that appear to be physically related to compact cores. We briefly describe a new multi-scale, multi-wavelength source extraction method used to detec…
Determining global parameters of the oscillations of solar-like stars
García, R. A.; Chaplin, W. J.; Kjeldsen, H. +7 more
Context. Helioseismology has enabled us to better understand the solar interior, while also allowing us to better constrain solar models. But now is a tremendous epoch for asteroseismology as space missions dedicated to studying stellar oscillations have been launched within the last years (MOST and CoRoT). CoRoT has already proved valuable result…
HerMES: SPIRE galaxy number counts at 250, 350, and 500 µm
Altieri, B.; Aussel, H.; Elbaz, D. +75 more
Emission at far-infrared wavelengths makes up a significant fraction of the total light detected from galaxies over the age of Universe. Herschel provides an opportunity for studying galaxies at the peak wavelength of their emission. Our aim is to provide a benchmark for models of galaxy population evolution and to test pre-existing models of gala…
The far-infrared/radio correlation as probed by Herschel
Berta, S.; Magnelli, B.; Nordon, R. +102 more
We set out to determine the ratio, qIR, of rest-frame 8-1000-µm flux, SIR, to monochromatic radio flux, S1.4 GHz, for galaxies selected at far-infrared (IR) and radio wavelengths, to search for signs that the ratio evolves with redshift, luminosity or dust temperature, Td, and to identify any far-I…
Initial highlights of the HOBYS key program, the Herschel imaging survey of OB young stellar objects
Aussel, H.; Olofsson, G.; Abergel, A. +46 more
We present the initial highlights of the HOBYS key program, which are based on Herschel images of the Rosette molecular complex and maps of the RCW120 H ii region. Using both SPIRE at 250/350/500 µm and PACS at 70/160 µm or 100/160 µm, the HOBYS survey provides an unbiased and complete census of intermediate- to high-mass young s…
Red-giant seismic properties analyzed with CoRoT
Auvergne, M.; Goupil, M. -J.; Baudin, F. +10 more
Context. The CoRoT 5-month long observation runs provide us with the opportunity to analyze a large variety of red-giant stars and derive their fundamental parameters from their asteroseismic properties.
Aims: We perform an analysis of more than 4600 CoRoT light curves to extract as much information as possible. We take into account the chara…
In-flight calibration of the Herschel-SPIRE instrument
Aussel, H.; Valtchanov, I.; Savini, G. +55 more
SPIRE, the Spectral and Photometric Imaging REceiver, is the Herschel Space Observatory's submillimetre camera and spectrometer. It contains a three-band imaging photometer operating at 250, 350 and 500 µm, and an imaging Fourier-transform spectrometer (FTS) covering 194-671 µm (447-1550 GHz). In this paper we describe the initial appr…