Search Publications
Evolution of the specific star formation rate function at z< 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS
Aussel, H.; Le Floc'h, E.; Sanders, D. B. +21 more
The relation between the stellar mass (M⋆) and the star formation rate (SFR) characterizes how the instantaneous star formation is determined by the galaxy past star formation history and by the growth of the dark matter structures. We deconstruct the M⋆-SFR plane by measuring the specific SFR functions in several stellar mass bins from z = 0.2 ou…
XMM-Newton and Chandra cross-calibration using HIFLUGCS galaxy clusters . Systematic temperature differences and cosmological impact
Lovisari, L.; David, L.; Reiprich, T. H. +2 more
Context. Robust X-ray temperature measurements of the intracluster medium (ICM) of galaxy clusters require an accurate energy-dependent effective area calibration. Since the hot gas X-ray emission of galaxy clusters does not vary on relevant timescales, they are excellent cross-calibration targets. Moreover, cosmological constraints from clusters …
Redistribution of particles across the nucleus of comet 67P/Churyumov-Gerasimenko
Jorda, L.; Lamy, P. L.; Lara, L. M. +52 more
Context. We present an investigation of the surface properties of areas on the nucleus of comet 67P/Churyumov-Gerasimenko.
Aims: We aim to show that transport of material from one part of the cometary nucleus to another is a significant mechanism that influences the appearance of the nucleus and the surface thermal properties.
Methods: W…
Properties of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies
Maraschi, L.; Tagliaferri, G.; Lähteenmäki, A. +27 more
We have conducted a multiwavelength survey of 42 radio loud narrow-1ine Seyfert 1 galaxies (RLNLS1s), selected by searching among all the known sources of this type and omitting those with steep radio spectra. We analyse data from radio frequencies to X-rays, and supplement these with information available from online catalogues and the literature…
T-PHOT: A new code for PSF-matched, prior-based, multiwavelength extragalactic deconfusion photometry
Elbaz, D.; Shu, X.; Ferguson, H. C. +19 more
Context. The advent of deep multiwavelength extragalactic surveys has led to the necessity for advanced and fast methods for photometric analysis. In fact, codes which allow analyses of the same regions of the sky observed at different wavelengths and resolutions are becoming essential to thoroughly exploit current and future data. In this context…
The far-infrared/radio correlation and radio spectral index of galaxies in the SFR-M∗ plane up to z~2
Berta, S.; Magnelli, B.; Nordon, R. +21 more
We study the evolution of the radio spectral index and far-infrared/radio correlation (FRC) across the star-formation rate - stellar masse (i.e. SFR-M∗) plane up to z ~ 2. We start from a stellar-mass-selected sample of galaxies with reliable SFR and redshift estimates. We then grid the SFR-M∗ plane in several redshift ranges…
A new catalogue of Strömgren-Crawford uvbyβ photometry
Paunzen, E.
Context. The uvbyβ photometric system is widely used for the study of various Galactic and extragalactic objects. It measures the colour due to temperature differences, the Balmer discontinuity, and blanketing absorption due to metals.
Aims: A new all-sky catalogue of all available uvbyβ measurements from the literature was generated.
Me…
Regional surface morphology of comet 67P/Churyumov-Gerasimenko from Rosetta/OSIRIS images
Jorda, L.; Lamy, P. L.; Lara, L. M. +51 more
Aims: The OSIRIS camera onboard the Rosetta spacecraft has been acquiring images of the comet 67P/Churyumov-Gerasimenko (67P)'s nucleus at spatial resolutions down to ~0.17 m/px ever since Aug. 2014. These images have yielded unprecedented insight into the morphological diversity of the comet's surface. This paper presents an overview of the …
Gaia FGK benchmark stars: abundances of α and iron-peak elements
Gilmore, G.; Montes, D.; Recio-Blanco, A. +26 more
Context. In the current era of large spectroscopic surveys of the Milky Way, reference stars for calibrating astrophysical parameters and chemical abundances are of paramount importance.
Aims: We determine elemental abundances of Mg, Si, Ca, Sc, Ti, V, Cr, Mn, Co, and Ni for our predefined set of Gaia FGK benchmark stars.
Methods: By ana…
Anatomy of the AGN in NGC 5548. I. A global model for the broadband spectral energy distribution
Kaastra, J. S.; Harrison, F. A.; Kriss, G. A. +24 more
An extensive multi-satellite campaign on NGC 5548 has revealed this archetypal Seyfert-1 galaxy to be in an exceptional state of persistent heavy absorption. Our observations taken in 2013-2014 with XMM-Newton, Swift, NuSTAR, INTEGRAL, Chandra, HST and two ground-based observatories have together enabled us to establish that this unexpected phenom…