Search Publications
Spectro-photometric distances to stars: A general purpose Bayesian approach
Schneider, Donald P.; Steinmetz, Matthias; Girardi, Léo +16 more
Context. Determining distances to individual field stars is a necessary step towards mapping Galactic structure and determining spatial variations in the chemo-dynamical properties of stellar populations in the Milky Way.
Aims: In order to provide stellar distance estimates for various spectroscopic surveys, we have developed a code that esti…
Mass assembly and morphological transformations since z ∼ 3 from CANDELS
Daddi, E.; Kartaltepe, J. S.; Koekemoer, A. M. +14 more
We quantify the evolution of the stellar mass functions (SMFs) of star-forming and quiescent galaxies as a function of morphology from z ∼ 3 to the present. Our sample consists of ∼50 000 galaxies in the CANDELS fields (∼880 arcmin2), which we divide into four main morphological types, I.e. pure bulge-dominated systems, pure spiral disc…
Searching for decaying dark matter in deep XMM-Newton observation of the Draco dwarf spheroidal
Boyarsky, Alexey; Ruchayskiy, Oleg; Bulbul, Esra +6 more
We present results of a search for the 3.5 keV emission line in our recent very long (∼ 1.4 Ms) XMM-Newton observation of the Draco dwarf spheroidal galaxy. The astrophysical X-ray emission from such dark matter-dominated galaxies is faint, thus they provide a test for the dark matter origin of the 3.5 keV line previously detected in other massive…
The Evolution of the Faint End of the UV Luminosity Function during the Peak Epoch of Star Formation (1 < z < 3)
Teplitz, Harry I.; Richard, Johan; Scarlata, Claudia +9 more
We present a robust measurement of the rest-frame UV luminosity function (LF) and its evolution during the peak epoch of cosmic star formation at 1\lt z\lt 3. We use our deep near-ultraviolet imaging from WFC3/UVIS on the Hubble Space Telescope and existing Advanced Camera for Surveys (ACS)/WFC and WFC3/IR imaging of three lensing galaxy clusters,…
Continuum Enhancements in the Ultraviolet, the Visible and the Infrared during the X1 Flare on 2014 March 29
Krucker, Säm; Heinzel, Petr; Kleint, Lucia +1 more
Enhanced continuum brightness is observed in many flares (“white light flares”), yet it is still unclear which processes contribute to the emission. To understand the transport of energy needed to account for this emission, we must first identify both the emission processes and the emission source regions. Possibilities include heating in the chro…
New constraints on primordial gravitational waves from Planck 2015
Melchiorri, Alessandro; Pagano, Luca; Salvati, Laura
We show that the new precise measurements of Cosmic Microwave Background (CMB) temperature and polarization anisotropies made by the Planck satellite significantly improves previous constraints on the cosmic gravitational waves background (CGWB) at frequencies f >10-15 Hz. On scales smaller than the horizon at the time of decoupling,…
Planck 2015 results. II. Low Frequency Instrument data processings
Bernard, J. -P.; Planck Collaboration; Ade, P. A. R. +214 more
We present an updated description of the Planck Low Frequency Instrument (LFI) data processing pipeline, associated with the 2015 data release. We point out the places where our results and methods have remained unchanged since the 2013 paper and we highlight the changes made for the 2015 release, describing the products (especially timelines) and…
Multiple stellar populations in Magellanic Cloud clusters - IV. The double main sequence of the young cluster NGC 1755
Da Costa, G. S.; Milone, A. P.; Marino, A. F. +4 more
Nearly all the star clusters with ages of ∼1-2 Gyr in both Magellanic Clouds exhibit an extended main-sequence turn-off (eMSTO) whose origin is under debate. The main scenarios suggest that the eMSTO could be either due to multiple generations of stars with different ages or to coeval stellar populations with different rotation rates. In this pape…
The XXL Survey. III. Luminosity-temperature relation of the bright cluster sample
Smith, G. P.; Chiappetti, L.; Pierre, M. +13 more
Context. The XXL Survey is the largest homogeneous survey carried out with XMM-Newton. Covering an area of 50 deg2, the survey contains several hundred galaxy clusters out to a redshift of ~2 above an X-ray flux limit of ~5 × 10-15 erg cm-2 s-1. This paper belongs to the first series of XXL papers focusi…
The Herschel-ATLAS Data Release 1 - II. Multi-wavelength counterparts to submillimetre sources
Ivison, R. J.; Dunlop, J. S.; Cooray, A. +27 more
This paper is the second in a pair of papers presenting data release 1 (DR1) of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS), the largest single open-time key project carried out with the Herschel Space Observatory. The H-ATLAS is a wide-area imaging survey carried out in five photometric bands at 100, 160, 250, 350 and 500 &mi…