Optical identification of six hard X-ray sources from the INTEGRAL and SWIFT all-sky surveys |
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Authors: | A A Lutovinov R A Burenin M G Revnivtsev I F Bikmaev |
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Institution: | 1.Space Research Institute,Russian Academy of Sciences,Moscow,Russia;2.Kazan (Volga Region) Federal University,Kazan,Russia;3.Academy of Sciences of Tatarstan,Kazan,Russia |
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Abstract: | We present results of optical identifications of six hard X-ray sources from the INTEGRAL and Swift all-sky surveys (IGR J03249+4041,
SWIFT J1449.5+8602, SWIFT J1542.0-1410, IGR J17009+3559, IGR J18151-1052, IGR J18538-0102). Our optical observations were
performed in 2009–2011 with the 6-m BTA telescope (Special Astrophysical Observatory, Nizhnii Arkhyz, Russia) and the 1.5-m
RTT-150 telescope (Turkish National Observatory, Antalya, Turkey). The optical spectra obtained for each of the program sources
have allowed us to establish the nature of the objects and to measure their redshifts from the positions of emission and absorption
lines. Five sources are shown to be extragalactic—four of them are identified with Seyfert 1 or 2 galaxies and the fifth source
belongs to the class of X-ray-bright, optically normal galaxies (XBONGs). The sixth object (IGR J18151-1052) is located in
our Galaxy and is an X-ray binary (XRB), a suspected cataclysmic variable. Apart from the optical spectra, we provide the
X-ray spectra for five sources in the 0.6–10 keV energy band obtained from XRT/Swift data. |
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