Search Publications
Second ROSAT all-sky survey (2RXS) source catalogue
Haberl, F.; Nandra, K.; Freyberg, M. J. +3 more
Aims: We present the second ROSAT all-sky survey source catalogue, hereafter referred to as the 2RXS catalogue. This is the second publicly released ROSAT catalogue of point-like sources obtained from the ROSAT all-sky survey (RASS) observations performed with the position-sensitive proportional counter (PSPC) between June 1990 and August 199…
The XMM-Newton serendipitous survey. VII. The third XMM-Newton serendipitous source catalogue
Esquej, P.; Motch, C.; Ballet, J. +37 more
Context. Thanks to the large collecting area (3 ×~1500 cm2 at 1.5 keV) and wide field of view (30' across in full field mode) of the X-ray cameras on board the European Space Agency X-ray observatory XMM-Newton, each individual pointing can result in the detection of up to several hundred X-ray sources, most of which are newly discovere…
Optimal binning of X-ray spectra and response matrix design
Kaastra, J. S.; Bleeker, J. A. M.
Aims: A theoretical framework is developed to estimate the optimal binning of X-ray spectra.
Methods: We derived expressions for the optimal bin size for model spectra as well as for observed data using different levels of sophistication.
Results: It is shown that by taking into account both the number of photons in a given spectral…
Consistent dust and gas models for protoplanetary disks. I. Disk shape, dust settling, opacities, and PAHs
Waters, L. B. F. M.; Pinte, C.; Ménard, F. +19 more
We propose a set of standard assumptions for the modelling of Class II and III protoplanetary disks, which includes detailed continuum radiative transfer, thermo-chemical modelling of gas and ice, and line radiative transfer from optical to cm wavelengths. The first paper of this series focuses on the assumptions about the shape of the disk, the d…
The XXL Survey. I. Scientific motivations - XMM-Newton observing plan - Follow-up observations and simulation programme
Smith, G. P.; Chiappetti, L.; Altieri, B. +89 more
Context. The quest for the cosmological parameters that describe our universe continues to motivate the scientific community to undertake very large survey initiatives across the electromagnetic spectrum. Over the past two decades, the Chandra and XMM-Newton observatories have supported numerous studies of X-ray-selected clusters of galaxies, acti…
The habitability of Proxima Centauri b. I. Irradiation, rotation and volatile inventory from formation to the present
Guinan, Edward F.; Engle, Scott G.; Reiners, Ansgar +9 more
Proxima b is a planet with a minimum mass of 1.3M⊕ orbiting within the habitable zone (HZ) of Proxima Centauri, a very low-mass, active star and the Sun's closest neighbor. Here we investigate a number of factors related to the potential habitability of Proxima b and its ability to maintain liquid water on its surface. We set the stage …
High-mass X-ray binaries in the Small Magellanic Cloud
Haberl, F.; Sturm, R.
Aims: The last comprehensive catalogue of high-mass X-ray binaries in the Small Magellanic Cloud (SMC) was published about ten years ago. Since then new such systems were discovered, mainly by X-ray observations with Chandra and XMM-Newton. For the majority of the proposed HMXBs in the SMC no X-ray pulsations were discovered as yet, and unles…
The population of X-ray supernova remnants in the Large Magellanic Cloud
Pietsch, W.; Haberl, F.; Greiner, J. +11 more
Aims: We present a comprehensive X-ray study of the population of supernova remnants (SNRs) in the Large Magellanic Cloud (LMC). Using primarily XMM-Newton observations, we conduct a systematic spectral analysis of LMC SNRs to gain new insight into their evolution and the interplay with their host galaxy.
Methods: We combined all the arc…
The XXL Survey. II. The bright cluster sample: catalogue and luminosity function
Smith, G. P.; Chiappetti, L.; Altieri, B. +40 more
Context. The XXL Survey is the largest survey carried out by the XMM-Newton satellite and covers a total area of 50 square degrees distributed over two fields. It primarily aims at investigating the large-scale structures of the Universe using the distribution of galaxy clusters and active galactic nuclei as tracers of the matter distribution. The…
Spectacular tails of ionized gas in the Virgo cluster galaxy NGC 4569
Ferrarese, L.; Boselli, A.; Cortese, L. +14 more
Context. Using MegaCam at the CFHT, we obtained a deep narrow band Hα+[NII] wide-field image of NGC 4569 (M90), the brightest late-type galaxy in the Virgo cluster. The image reveals the presence of long tails of diffuse ionized gas, without any associated stellar component extending from the disc of the galaxy up to ≃80 kpc (projected distance) a…