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 …
Extragalactic background light inferred from AEGIS galaxy-SED-type fractions
Barmby, P.; Cooper, M. C.; Huang, J. -S. +15 more
The extragalactic background light (EBL) is of fundamental importance both for understanding the entire process of galaxy evolution and for γ-ray astronomy, but the overall spectrum of the EBL between 0.1 and 1000 µm has never been determined directly from galaxy spectral energy distribution (SED) observations over a wide redshift range. The…
Defining the intrinsic AGN infrared spectral energy distribution and measuring its contribution to the infrared output of composite galaxies
Alexander, D. M.; Hickox, R. C.; Mullaney, J. R. +1 more
We use infrared spectroscopy and photometry to empirically define the intrinsic mid- to far-infrared spectral energy distribution (i.e. 6-100 µm SED) of thermal emission produced by typical (i.e. 2-10 keV luminosity, L2-10 keV∼ 1042-1044 erg s-1) active galactic nuclei (hereafter AGNs). The average…
The Tucana/Horologium, Columba, AB Doradus, and Argus Associations: New Members and Dusty Debris Disks
Zuckerman, B.; Song, Inseok; Bessell, M. S. +1 more
We propose 35 star systems within ~70 pc of Earth as newly identified members of nearby young stellar kinematic groups; these identifications include the first A- and late-B-type members of the AB Doradus moving group and field Argus Association. All but one of the 35 systems contain a bright solar- or earlier-type star that should make an excelle…
Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey
Oyabu, Shinki; Hasegawa, Sunao; Onaka, Takashi +10 more
We present the results of an unbiased asteroid survey in the mid-infrared wavelength region with the Infrared Camera (IRC) on board the Japanese infrared satellite AKARI. About 20% of the point source events recorded in the AKARI All-Sky Survey observations are not used for the IRC Point Source Catalog (IRC-PSC) in its production process because o…
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…
Mapping the radial structure of AGN tori
Hönig, S. F.; Kishimoto, M.; Tristram, K. R. W. +3 more
We present mid-IR interferometric observations of six type 1 AGNs at multiple baseline lengths ranging from 27 m to 130 m, reaching high angular resolutions up to λ/B ~ 0.02 arcsec. For two of the targets, we have simultaneous near-IR interferometric measurements as well, taken within a week. We find that all the objects are partially resolved at …
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…
Evidence for an FU Orionis-like Outburst from a Classical T Tauri Star
Filippenko, Alexei V.; Cenko, S. Bradley; Law, Nicholas M. +28 more
We present pre- and post-outburst observations of the new FU Orionis-like young stellar object PTF 10qpf (also known as LkHα 188-G4 and HBC 722). Prior to this outburst, LkHα 188-G4 was classified as a classical T Tauri star (CTTS) on the basis of its optical emission-line spectrum superposed on a K8-type photosphere and its photometric variabilit…
Planck early results. XXII. The submillimetre properties of a sample of Galactic cold clumps
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +201 more
We perform a detailed investigation of sources from the Cold Cores Catalogue of Planck Objects (C3PO). Our goal is to probe the reliability of the detections, validate the separation between warm and cold dust emission components, provide the first glimpse at the nature, internal morphology and physical characterictics of the Planck-detected sourc…