Search Publications
GOODS-Herschel: an infrared main sequence for star-forming galaxies
Magnelli, B.; Lutz, D.; Altieri, B. +52 more
We present the deepest 100 to 500 µm far-infrared observations obtained with the Herschel Space Observatory as part of the GOODS-Herschel key program, and examine the infrared (IR) 3-500 µm spectral energy distributions (SEDs) of galaxies at 0 < z < 2.5, supplemented by a local reference sample from IRAS, ISO, Spitzer, and AKARI …
Evolution of the dusty infrared luminosity function from z = 0 to z = 2.3 using observations from Spitzer
Magnelli, B.; Elbaz, D.; Frayer, D. T. +4 more
Aims: We derive the evolution of the infrared luminosity function (LF) over the last 4/5ths of cosmic time using deep 24 and 70 µm imaging of the GOODS North and South fields.
Methods: We use an extraction technique based on prior source positions at shorter wavelengths to build the 24 and 70 µm source catalogs. The majority …
The VLT-FLAMES Tarantula Survey. I. Introduction and observational overview
van Loon, J. Th.; Costa, E.; Howarth, I. D. +39 more
The VLT-FLAMES Tarantula Survey (VFTS) is an ESO Large Programme that has obtained multi-epoch optical spectroscopy of over 800 massive stars in the 30 Doradus region of the Large Magellanic Cloud (LMC). Here we introduce our scientific motivations and give an overview of the survey targets, including optical and near-infrared photometry and compr…
A mature cluster with X-ray emission at z = 2.07
Finoguenov, A.; Cimatti, A.; Daddi, E. +10 more
We report evidence of a fully established galaxy cluster at z = 2.07, consisting of a ~20σ overdensity of red, compact spheroidal galaxies spatially coinciding with extended X-ray emission detected with XMM-Newton. We use VLT VIMOS and FORS2 spectra and deep Subaru, VLT and Spitzer imaging to estimate the redshift of the structure from a prominent…
The 44Ti-powered spectrum of SN 1987A
Fransson, C.; Jerkstrand, A.; Kozma, C.
SN 1987A provides a unique opportunity to study the evolution of a supernova from explosion into very late phases. Owing to the rich chemical structure, the multitude of physical processes involved and extensive radiative transfer effects, detailed modeling is needed to interpret the emission from this and other supernovae. In this paper, we analy…
Multiwavelength campaign on Mrk 509. IV. Optical-UV-X-ray variability and the nature of the soft X-ray excess
Kaastra, J. S.; Kriss, G. A.; Cappi, M. +8 more
We present the analysis of XMM-Newtonand Swiftoptical-UV and X-ray observations of the Seyfert-1/QSO
C-GOALS: Chandra observations of a complete sample of luminous infrared galaxies from the IRAS Revised Bright Galaxy Survey
Veilleux, S.; Sanders, D. B.; Surace, J. A. +11 more
We present X-ray data for a complete sample of 44 luminous infrared galaxies (LIRGs), obtained with the Chandra X-ray Observatory. These are the X-ray observations of the high luminosity portion of the Great Observatory All-sky LIRG Survey (GOALS), which includes the most luminous infrared selected galaxies, log (Lir/L⊙) ≥ 11…
Planck early results. IX. XMM-Newton follow-up for validation of Planck cluster candidates
Kneissl, R.; Dahle, H.; Miville-Deschênes, M. -A. +201 more
We present the XMM-Newton follow-up for confirmation of Planck cluster candidates. Twenty-five candidates have been observed to date using snapshot (~10ks) exposures, ten as part of a pilot programme to sample a low range of signal-to-noise ratios (4 < S/N < 6), and a further 15 in a programme to observe a sample of S/N > 5 candidates. Th…
The XMM Deep survey in the CDF-S. I. First results on heavily obscured AGN
Silverman, J. D.; Bauer, F. E.; Brandt, W. N. +25 more
We present the first results of the spectroscopy of distant, obscured AGN as obtained with the ultra-deep (≈3.3 Ms) XMM-Newton survey in the Chandra deep field South. One of the primary goals of the project is to characterize the X-ray spectral properties of obscured and heavily obscured Compton-thick AGN over the range of redhifts and luminositie…
COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. IX. Time delays, lens dynamics and baryonic fraction in HE 0435-1223
Magain, P.; Koleva, M.; Faure, C. +13 more
We present accurate time delays for the quadruply imaged quasar HE 0435-1223. The delays were measured from 575 independent photometric points obtained in the R-band between January 2004 and March 2010. With seven years of data, we clearly show that quasar image A is affected by strong microlensing variations and that the time delays are best expr…