Search Publications
Radiation processes in the Seyfert galaxy NGC 4151
Eriksson, M.
Aims: The main aim of this work was to investigate if the radiative process photoexcitation by accidental resonance (PAR) is producing Fe II lines in the UV region of NGC 4151. At the same time I searched for collisionally excited Fe II emission. While doing so, the broad line region (BLR), intermediate line region (ILR) and narrow line regio…
The Herschel M 33 extended survey (HerM33es): PACS spectroscopy of the star forming region BCLMP 302 (Corrigendum)
Boquien, M.; Braine, J.; Calzetti, D. +19 more
Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
A multiwavelength study of the IRAS Deep Survey galaxy sample. III. Spectral classification and dynamical properties
Mazzei, P.; Bettoni, D.; Della Valle, A.
Context. The infrared deep sample (IDS), in the north ecliptical polar region (NEPR), is the first complete, far-IR selected sample, on which numerous studies of galaxy evolution are based. Such a sample allows direct investigation of the evolution of dusty galaxies up to a redshift of about 0.3, where the global star formation rate is known to ev…
The role of filament activation in a solar eruption
Fletcher, L.; Romano, P.; Labrosse, N. +2 more
Context. Observations show that the mutual relationship between filament eruptions and solar flares cannot be described in terms of an unique scenario. In some cases, the eruption of a filament appears to trigger a flare, while in others the observations are more consistent with magnetic reconnection that produces both the flare observational sign…
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…
The MCXC: a meta-catalogue of x-ray detected clusters of galaxies
Arnaud, M.; Pointecouteau, E.; Pratt, G. W. +2 more
We present the compilation and properties of a meta-catalogue of X-ray detected clusters of galaxies, the MCXC. This very large catalogue is based on publicly available ROSAT All Sky Survey-based (NORAS, REFLEX, BCS, SGP, NEP, MACS, and CIZA) and serendipitous (160SD, 400SD, SHARC, WARPS, and EMSS) cluster catalogues. Data have been systematically…
Planck early results. I. The Planck mission
Kneissl, R.; Miville-Deschênes, M. -A.; Bernard, J. -P. +272 more
The European Space Agency's Planck satellite was launched on 14 May 2009, and has been surveying the sky stably and continuously since 13 August 2009. Its performance is well in line with expectations, and it will continue to gather scientific data until the end of its cryogenic lifetime. We give an overview of the history of Planck in its first y…
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…
Planck early results. VIII. The all-sky early Sunyaev-Zeldovich cluster sample
Kneissl, R.; Dahle, H.; Miville-Deschênes, M. -A. +235 more
We present the first all-sky sample of galaxy clusters detected blindly by the Planck satellite through the Sunyaev-Zeldovich (SZ) effect from its six highest frequencies. This early SZ (ESZ) sample is comprised of 189 candidates, which have a high signal-to-noise ratio ranging from 6 to 29. Its high reliability (purity above 95%) is further ensur…