The hard X-ray source GRS 1734-292: a Seyfert 1 galaxy behind the Galactic Center

J. Marti(1), I.F. Mirabel(1), S. Chaty(1), & L.F. Rodriguez(2)

(1) CEA/DSM/DAPNIA/Service d'Astrophysique, Centre d'Etudes de Saclay, 91191 Gif/Yvette, France
(2) Instituto de Astronomia, UNAM, Apdo. Postal 70-264, 04510 Mexico D.F., Mexico

Paper: A&A, in press

EPrint Server: astro-ph/9710136


Abstract:

The radio, infrared and optical counterparts of the hard X-ray source GRS 1734-292 (l^II=358.9^o, b^II=+1.4^o) are reported. The optical spectrum exhibits broad (>1000 km s^-1) H alpha emission at a redshift of 0.0214+/-0.0005. The radio counterpart is a double-sided synchrotron jet of 5 arcsec, which at a distance of 87 Mpc corresponds to a size of 2 kpc. The multiwavelength observations of GRS 1734-292 indicate that this X-ray source is a Seyfert 1 galaxy behind 6+/-1 magnitudes of visual absorption.


Preprints available from the authors at chaty@discovery.saclay.cea.fr , or the raw TeX (no figures) if you click here.

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