352 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Consejo Superior de Investigaciones CientíficasES9 papers
- Universidad Nacional Autónoma de MéxicoMX4 papers
- Centro de AstrobiologíaES3 papers
- European Space Astronomy CentreES3 papers
- Roma Tre UniversityIT3 papers
- Astronomical Observatory of RomeIT2 papers
- Centre National de la Recherche ScientifiqueFR2 papers
- European Space Research and Technology CentreNL2 papers
- Instituto de Astrofísica de CanariasES2 papers
- Instituto de Física de CantabriaES2 papers
- Max Planck Institute for AstronomyDE2 papers
- National Institute for AstrophysicsIT2 papers
8 papers · 1 filter
A BLR origin for the iron K line in NGC7213
Stefano Bianchi, Fabio La Franca, Giorgio Matt +5
The X-ray spectrum of NGC7213 is known to present no evidence for Compton reflection, a unique result among bright Seyfert 1s. The observed neutral iron K line, therefore, canno…
XMM-Newton observations of 4 luminous radio-quiet AGN, and the soft X-ray excess problem
F. D'Ammando, S. Bianchi, E. Jimenez-Bailon +1
The nature and origin of the soft X-ray excess in radio quiet AGN is still an open issue. The interpretation in terms of thermal disc emission has been challanged by the discovery…
NGC3147: a "true" Seyfert 2 without the broad-line region
S. Bianchi, A. Corral, F. Panessa +5
We report on simultaneous optical and X-ray observations of the Seyfert galaxy, NGC3147. The XMM-Newton spectrum shows that the source is unabsorbed in the X-rays ($N_H<5\times10^{…
New constraints on the membership of the T dwarf S Ori 70 in the sigma Orionis cluster
M. R. Zapatero Osorio, V. J. S. Bejar, G. Bihain +10
(Abridged) The nature of S Ori 70, a faint mid-T type object found towards the direction of the young sigma Orionis cluster, is still under debate. We intend to disentangle whether…
XMM-Newton observation of the deep minimum state of PG 2112+059: A spectrum dominated by reflection from the accretion disk?
N. Schartel, P. M. Rodriguez-Pascual, M. Santos-Lleo +5
We analyse a 75ks XMM-Newton observation of PG 2112+059 performed in November 2005 and compare it with a 15ks XMM-Newton observation taken in May 2003. PG 2112+059 was found in a d…
A PDR-Code Comparison Study
M. Roellig, N. P. Abel, T. Bell +21
We present a comparison between independent computer codes, modeling the physics and chemistry of interstellar photon dominated regions (PDRs). Our goal was to understand the mutua…
Are isolated planetary-mass objects really isolated? A brown dwarf-exoplanet system candidate in the sigma Orionis cluster
J. A. Caballero, E. L. Martin, P. D. Dobbie +1
The recent detection by direct imaging of three giant planets at wide separation (50-250 AU) from their primaries has raised the question about the ``true isolation'' of planetary-…
Ly-alpha emission from GRB host galaxies
J. P. U. Fynbo, P. Moller, B. Thomsen +8
Ly-alpha emission is indicative of on-going star formation in a dust-poor environment. Ly-alpha imaging is therefore a probe of the star formation rate and of the dust-content of G…