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 …
Characterizing interstellar filaments with Herschel in IC 5146
Hill, T.; André, Ph.; Arzoumanian, D. +21 more
We provide a first look at the results of the Herschel Gould Belt survey toward the IC 5146 molecular cloud and present a preliminary analysis of the filamentary structure in this region. The column density map, derived from our 70-500 µm Herschel data, reveals a complex network of filaments and confirms that these filaments are the main bir…
PACS Evolutionary Probe (PEP) - A Herschel key program
Berta, S.; Magnelli, B.; Nordon, R. +35 more
Deep far-infrared photometric surveys studying galaxy evolution and the nature of the cosmic infrared background are a key strength of the Herschel mission. We describe the scientific motivation for the PACS Evolutionary Probe (PEP) guaranteed time key program and its role within the entire set of Herschel surveys, and the field selection that inc…
Filaments and ridges in Vela C revealed by Herschel: from low-mass to high-mass star-forming sites
Bernard, J. -P.; Martin, P. G.; Hill, T. +29 more
We present the first Herschel PACS and SPIRE results of the Vela C molecular complex in the far-infrared and submillimetre regimes at 70, 160, 250, 350, and 500 µm, spanning the peak of emission of cold prestellar or protostellar cores. Column density and multi-resolution analysis (MRA) differentiates the Vela C complex into five distinct su…
Non-standard grain properties, dark gas reservoir, and extended submillimeter excess, probed by Herschel in the Large Magellanic Cloud
Bernard, J. -P.; Reach, W. T.; Lebouteiller, V. +13 more
Context.Herschel provides crucial constraints on the IR SEDs of galaxies, allowing unprecedented accuracy on the dust mass estimates. However, these estimates rely on non-linear models and poorly-known optical properties.
Aims: In this paper, we perform detailed modelling of the Spitzer and Herschel observations of the LMC, in order to: (i) s…
Building the cosmic infrared background brick by brick with Herschel/PEP
Berta, S.; Magnelli, B.; Nordon, R. +24 more
The cosmic infrared background (CIB) includes roughly half of the energy radiated by all galaxies at all wavelengths across cosmic time, as observed at the present epoch. The PACS Evolutionary Probe (PEP) survey is exploited here to study the CIB and its redshift differential, at 70, 100 and 160 µm, where the background peaks. Combining PACS…
Characterizing precursors to stellar clusters with Herschel
Bernard, J. -P.; Testi, L.; Peretto, N. +9 more
Context. Despite their profound effect on the universe, the formation of massive stars and stellar clusters remains elusive. Recent advances in observing facilities and computing power have brought us closer to understanding this formation process. In the past decade, compelling evidence has emerged that suggests infrared dark clouds (IRDCs) may b…
Modeling the evolution of infrared galaxies: a parametric backward evolution model
Dole, H.; Lagache, G.; Béthermin, M. +2 more
Aims: We attempt to model the infrared galaxy evolution in as simple a way as possible and reproduce statistical properties such as the number counts between 15 µm and 1.1 mm, the luminosity functions, and the redshift distributions. We then use the fitted model to interpret observations from Spitzer, AKARI, BLAST, LABOCA, AzTEC, SPT, a…
Weeds: a CLASS extension for the analysis of millimeter and sub-millimeter spectral surveys
Maret, S.; Pety, J.; Hily-Blant, P. +2 more
The advent of large instantaneous bandwidth receivers and high spectral resolution spectrometers on (sub-)millimeter telescopes has opened up the possibilities for unbiased spectral surveys. Because of the large amount of data they contain, any analysis of these surveys requires dedicated software tools. Here we present an extension of the widely …
MESS (Mass-loss of Evolved StarS), a Herschel key program
Ivison, R. J.; Blommaert, J. A. D. L.; Olofsson, G. +39 more
MESS (Mass-loss of Evolved StarS) is a guaranteed time key program that uses the PACS and SPIRE instruments on board the Herschel space observatory to observe a representative sample of evolved stars, that include asymptotic giant branch (AGB) and post-AGB stars, planetary nebulae and red supergiants, as well as luminous blue variables, Wolf-Rayet…