Search Publications
Herschel-ATLAS: Dust temperature and redshift distribution of SPIRE and PACS detected sources using submillimetre colours
Rodighiero, G.; Valtchanov, I.; Ivison, R. J. +69 more
We present colour-colour diagrams of detected sources in the Herschel-ATLAS science demonstration field from 100 to 500 µm using both PACS and SPIRE. We fit isothermal modified black bodies to the spectral energy distribution (SED) to extract the dust temperature of sources with counterparts in Galaxy And Mass Assembly (GAMA) or SDSS surveys…
The Herschel Virgo Cluster Survey . II. Truncated dust disks in H I-deficient spirals
Bomans, D. J.; Bianchi, S.; Fritz, J. +27 more
By combining Herschel-SPIRE observations obtained as part of the Herschel Virgo Cluster Survey with 21 cm Hi data from the literature, we investigate the role of the cluster environment on the dust content of Virgo spiral galaxies. We show for the first time that the extent of the dust disk is significantly reduced in Hi-deficient galaxies, follow…
HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE): The Large Magellanic Cloud dust
Poglitsch, A.; van Loon, J. Th.; Bernard, J. -P. +52 more
The HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE) of the Magellanic Clouds will use dust emission to investigate the life cycle of matter in both the Large and Small Magellanic Clouds (LMC and SMC). Using the Herschel Space Observatory's PACS and SPIRE photometry cameras, we imaged a 2° × 8° strip through the LMC, at a position a…
C+ detection of warm dark gas in diffuse clouds
Li, D.; Goldsmith, P. F.; Langer, W. D. +3 more
We present the first results of the Herschel open time key program, Galactic Observations of Terahertz C+ (GOT C+) survey of the [CII] 2P3/2-2P1/2 fine-structure line at 1.9 THz (158 µm) using the HIFI instrument on Herschel. We detected 146 interstellar clouds along sixteen lines-of-sig…
The role of aerodynamic drag in propagation of interplanetary coronal mass ejections
Möstl, C.; Vršnak, B.; Vennerstrom, S. +3 more
Context. The propagation of interplanetary coronal mass ejections (ICMEs) and the forecast of their arrival on Earth is one of the central issues of space weather studies.
Aims: We investigate to which degree various ICME parameters (mass, size, take-off speed) and the ambient solar-wind parameters (density and velocity) affect the ICME Sun-E…
FERO: Finding extreme relativistic objects. I. Statistics of relativistic Fe Kα lines in radio-quiet Type 1 AGN
Bianchi, S.; Cappi, M.; Ponti, G. +10 more
Context. Accretion models predict that fluorescence lines broadened by relativistic effects should arise from reflection of X-ray emission onto the inner region of the accretion disc surrounding the central black hole of active galactic nuclei (AGN). The theory behind the origin of relativistic lines is well established, and observational evidence…
Substructure of the galaxy clusters in the REXCESS sample: observed statistics and comparison to numerical simulations
Böhringer, H.; Arnaud, M.; Pratt, G. W. +6 more
We study the substructure statistics of a representative sample of galaxy clusters by means of two currently popular substructure characterisation methods, power ratios and centroid shifts. We use the 31 clusters from the REXCESS sample, compiled from the southern ROSAT All-Sky cluster survey (REFLEX) with a morphologically unbiased selection in X…
Detection of the ellipsoidal and the relativistic beaming effects in the CoRoT-3 lightcurve
Mazeh, T.; Faigler, S.
CoRoT-3b is a 22 Jupiter-mass massive-planet/brown-dwarf object, orbiting an F3-star with a period of 4.3 days. We analyzed the out-of-transit CoRoT-3 red-channel lightcurve obtained by the CoRoT mission and detected the ellipsoidal modulation, with half the orbital period and an amplitude of 59 ± 9 ppm (parts per million), and the relativistic be…
Herschel observations of EXtra-Ordinary Sources (HEXOS): The present and future of spectral surveys with Herschel/HIFI
de Graauw, Th.; Menten, K. M.; Falgarone, E. +56 more
We present initial results from the Herschel GT key program: Herschel observations of EXtra-Ordinary Sources (HEXOS) and outline the promise and potential of spectral surveys with Herschel/HIFI. The HIFI instrument offers unprecedented sensitivity, as well as continuous spectral coverage across the gaps imposed by the atmosphere, opening up a larg…
Herschel-ATLAS: Extragalactic number counts from 250 to 500 microns
Rodighiero, G.; Valtchanov, I.; Gardner, Jonathan P. +40 more
Aims: The Herschel-ATLAS survey (H-ATLAS) will be the largest area survey to be undertaken by the Herschel Space Observatory. It will cover 550 sq. deg. of extragalactic sky at wavelengths of 100, 160, 250, 350 and 500 µm when completed, reaching flux limits (5σ) from 32 to 145 mJy. We here present galaxy number counts obtained for SPIR…