Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-05-12
Astronomy and Astrophysics
Astrophysics
5 pages, LaTeX, plus 8 .ps figures, accepted by A&A
Scientific paper
In the present work we report the BeppoSAX serendipitous discovery of the type 2 AGN 1SAXJ2234.8-2541 in the MECS field of view when pointing at the Seyfert 2 galaxy NGC7314. The source is optical identified with the bright (m_B=14.40) galaxy ESO533-G50 at redshift z=0.026. The source is clearly detected at energies above 4 keV but barely visible below this energy implying heavy obscuration intrinsic to the source. Spectral analysis indicates a column density of the order of 2-3 x 10^(23) cm^-2$ and a power law photon index compatible with values often seen in active galaxies. These X-ray characteristics suggest a Seyfert 2 classification for 1SAXJ2234.8-2541. Subsequent spectroscopy of the optical conterpart, ESO533-G50, performed with the ESO 1.52m telescope at La Silla Observatory, confirms the type 2 nature of this source and therefore its identification with the X-ray source. We also report the marginal detection of an iron line centered at 7.29 +/- 0.47 keV and having an equivalent width of 464 (+636 -398) eV; although marginal, this result is indicative of the presence of warm material in the source. If instead the line is associated to cold material, we estimate an upper limit to its equivalent width of 290 eV. The overall characteristics of 1SAXJ2234.8-2541 strongly suggest that the source is Compton thin.
Bassani Loredana
Malizia Angela
Negueruela Ignacio
No associations
LandOfFree
BeppoSAX discovery of a new Seyfert 2 galaxy: 1SAXJ2234.8-2541 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with BeppoSAX discovery of a new Seyfert 2 galaxy: 1SAXJ2234.8-2541, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and BeppoSAX discovery of a new Seyfert 2 galaxy: 1SAXJ2234.8-2541 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-436257