Search Publications
The Sloan Digital Sky Survey Quasar Catalog: Twelfth data release
Nandra, Kirpal; Pâris, Isabelle; Petitjean, Patrick +43 more
We present the Data Release 12 Quasar catalog (DR12Q) from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. This catalog includes all SDSS-III/BOSS objects that were spectroscopically targeted as quasar candidates during the full survey and that are confirmed as quasars via visual inspection of the spectra, h…
The MUSE Hubble Ultra Deep Field Survey. I. Survey description, data reduction, and source detection
Bacon, Roland; Bouché, Nicolas; Inami, Hanae +24 more
We present the MUSE Hubble Ultra Deep Survey, a mosaic of nine MUSE fields covering 90% of the entire HUDF region with a 10-h deep exposure time, plus a deeper 31-h exposure in a single 1.15 arcmin2 field. The improved observing strategy and advanced data reduction results in datacubes with sub-arcsecond spatial resolution (0.̋65 at 7000…
Three-dimensional mapping of the local interstellar medium with composite data
Monreal-Ibero, A.; Elyajouri, M.; Lallement, R. +2 more
Context. Three-dimensional maps of the Galactic interstellar medium are general astrophysical tools. Reddening maps may be based on the inversion of color excess measurements for individual target stars or on statistical methods using stellar surveys. Three-dimensional maps based on diffuse interstellar bands (DIBs) have also been produced. All me…
Lyman-α spectral properties of five newly discovered Lyman continuum emitters
Schaerer, D.; Thuan, T. X.; Verhamme, A. +4 more
Aims: We have recently reported the discovery of five low redshift Lyman continuum (LyC) emitters (LCEs) with absolute escape fractions fescLyC that range from 6 to 13%, higher than previously found and that more than double the number of low redshift LCEs. We use these observations to test theoretical predictions about …
The MUSE Hubble Ultra Deep Field Survey. VIII. Extended Lyman-α haloes around high-z star-forming galaxies
Bacon, Roland; Blaizot, Jérémy; Garel, Thibault +17 more
We report the detection of extended Lyα haloes around 145 individual star-forming galaxies at redshifts 3 ≤ z ≤ 6 in the Hubble Ultra Deep Field observed with the Multi-Unit Spectroscopic Explorer (MUSE) at ESO-VLT. Our sample consists of continuum-faint (- 15 ≥ MUV ≥ -22) Lyα emitters (LAEs). Using a 2D, two-component (continuum-like a…
ALMA unveils rings and gaps in the protoplanetary system HD 169142 : signatures of two giant protoplanets
Fedele, D.; Henning, Th.; Miotello, A. +6 more
The protoplanetary system HD 169142 is one of the few cases where a potential candidate protoplanet has recently been detected by direct imaging in the near-infrared. To study the interaction between the protoplanet and the disk itself, observations of the gas and dust surface density structure are needed. This paper reports new ALMA observations …
The third data release of the Kilo-Degree Survey and associated data products
Hoekstra, Henk; Gwyn, Stephen D. J.; Heymans, Catherine +41 more
Context. The Kilo-Degree Survey (KiDS) is an ongoing optical wide-field imaging survey with the OmegaCAM camera at the VLT Survey Telescope. It aims to image 1500 square degrees in four filters (ugri). The core science driver is mapping the large-scale matter distribution in the Universe, using weak lensing shear and photometric redshift measureme…
Discovery of a warm, dusty giant planet around HIP 65426
Moutou, C.; Rouan, D.; Augereau, J. -C. +120 more
Aims: The SHINE program is a high-contrast near-infrared survey of 600 young, nearby stars aimed at searching for and characterizing new planetary systems using VLT/SPHERE's unprecedented high-contrast and high-angular-resolution imaging capabilities. It is also intended to place statistical constraints on the rate, mass and orbital distribut…
On the use of C-stat in testing models for X-ray spectra
Kaastra, J. S.
Context. It has been shown that for the analysis of X-ray spectra the C-statistic, contrary to the χ2-statistic, provides unbiased estimates of the model parameters and their uncertainty ranges.
Aims: However, it is often stated that the C-statistic cannot be used to carry out statistical tests on the goodness of fit of the model, …
Planck intermediate results. LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters
Kim, J.; Miville-Deschênes, M. -A.; Planck Collaboration +155 more
The six parameters of the standard ΛCDM model have best-fit values derived from the Planck temperature power spectrum that are shifted somewhat from the best-fit values derived from WMAP data. These shifts are driven by features in the Planck temperature power spectrum at angular scales that had never before been measured to cosmic-variance level …