Optical identification of hard X-ray source IGRJ18257-0707
R. A. Burenin, I. F. Bikmaev, M. G. Revnivtsev, J. A. Tomsick, S. Yu., Sazonov, M. N. Pavlinskiy, R. A. Sunyaev
TL;DR
This study successfully identified the optical counterpart of the hard X-ray source IGRJ18257-0707 as a type 1 Seyfert galaxy at redshift 0.037, using spectroscopic observations and precise Chandra positioning.
Contribution
The paper presents the first optical identification of IGRJ18257-0707 as a Seyfert galaxy, combining X-ray and optical spectroscopy for accurate classification.
Findings
Confirmed the source as a type 1 Seyfert galaxy
Determined the redshift to be z=0.037
Associated the X-ray source with a faint optical object
Abstract
We present the results of the optical identification of hard X-ray source IGRJ18257-0707 trough the spectroscopic observations of its optical counterpart with RTT150 telescope. Accurate position of the X-ray source, determined using Chandra observations, allowed us to associate this source with the faint optical object (m_R=~20.4), which shows broad H_\alpha emission line in its optical spectrum. Therefore we conclude that the source IGRJ18257-0707 is a type 1 Seyfert galaxy at redshift z=0.037.
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Taxonomy
TopicsAstrophysical Phenomena and Observations · Pulsars and Gravitational Waves Research · Astronomical Observations and Instrumentation