Search Publications
The cosmic far-infrared background buildup since redshift 2 at 70 and 160 microns in the COSMOS and GOODS fields
Kneib, J. -P.; Aussel, H.; Le Floc'h, E. +10 more
Context. The cosmic far-infrared background (CIB) at wavelengths around 160 µm corresponds to the peak intensity of the whole extragalactic background light, which is being measured with increasing accuracy. However, the build up of the CIB emission as a function of redshift is still not well known.
Aims: Our goal is to measure the CIB …
A spectroscopic investigation of early-type stars in the young open cluster Westerlund 2
Nazé, Y.; Rauw, G.; Sana, H.
Context. The distance of the very young open cluster
Aims: We attempt a joint analysis of spectroscopic and photometric data of eclipsing binaries in the clus…
Non-LTE models for the gaseous metal component of circumstellar discs around white dwarfs
Rauch, T.; Werner, K.; Nagel, T. +1 more
Context. Gaseous metal discs around single white dwarfs have been discovered recently. They are thought to develop from disrupted planetary bodies.
Aims: Spectroscopic analyses will allow us to study the composition of extrasolar planetary material. We investigate in detail the first object for which a gas disc was discovered (SDSS J122859.93…
The extinction map of the OMC-1 molecular cloud behind the Orion nebula
Robberto, M.; Scandariato, G.; Pagano, I. +1 more
Context. The Orion nebula and its associated young stellar cluster are located at the front-side of the optically thick
The γ Doradus CoRoT target HD 49434. II. Frequency analysis of the CoRoT data
Auvergne, M.; Amado, P. J.; Baudin, F. +18 more
Context. HD 49434 is a bright (V = 5.75 m) and multiperiodic γ Dor-type pulsator that has been selected for the asteroseismic core programme of the CoRoT satellite.
Aims: An extensive and detailed study has been carried out to investigate the pulsational content of this object on the basis of the 136.9 d (331291 useful datapoints) time series…
A new study of the supernova remnant G344.7-0.1 located in the vicinity of the unidentified TeV source HESS J1702-420
Giacani, E.; Smith, M. J. S.; Dubner, G. +1 more
Context. The identification of counterparts of dark gamma-ray sources adds greatly to our understanding of their underlying astrophysical processes.
Aims: We investigate the physical properties of the supernova remnant (SNR) G344.7-0.1, to clarify whether it hosts a pulsar wind nebula (PWN), and the possible physical relationship between the …
VLBI imaging of a flare in the Crab nebula: more than just a spot
Muxlow, T. W. B.; Horns, D.; Lobanov, A. P.
We report on very long baseline interferometry (VLBI) observations of the radio emission from the inner region of the Crab nebula, made at 1.6 GHz and 5 GHz after a recent high-energy flare in this object. The 5 GHz data have provided only upper limits of 0.4 milli-Jansky (mJy) on the flux density of the pulsar and 0.4 mJy/beam on the brightness o…
X Herculis and TX Piscium: two cases of ISM interaction with stellar winds observed by Herschel
Blommaert, J. A. D. L.; Olofsson, H.; Jorissen, A. +14 more
The asymptotic giant branch (AGB) stars X Her and TX Psc have been imaged at 70 and 160 µm with the PACS instrument onboard the Herschel satellite, as part of the large MESS (Mass loss of Evolved StarS) guaranteed time key program. The images reveal an axisymmetric extended structure with its axis oriented along the space motion of the stars…
IKT 16: a composite supernova remnant in the Small Magellanic Cloud
Pietsch, W.; Haberl, F.; Hatzidimitriou, D. +11 more
Aims: IKT 16 is an X-ray and radio-faint supernova remnant (SNR) in the Small Magellanic Cloud (SMC). A previous X-ray study of this SNR found a hard X-ray source near its centre. Using all available archival and proprietary XMM-Newton data, alongside new multi-frequency radio-continuum surveys and optical observations at Hα and forbidden [SI…
Benchmarking atomic data for astrophysics: Fe xiii EUV lines
Del Zanna, G.
Recent atomic data for Fe xiii are benchmarked against high-resolution spectroscopic observations of the solar corona. All the identifications of the EUV lines are reviewed by also taking into account laboratory measurements. A few new identifications are proposed, and many wavelengths are revised. All the strongest EUV lines are now identified. V…