期刊
ASTRONOMY & ASTROPHYSICS
卷 459, 期 1, 页码 21-+出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20066055
关键词
galaxies : Seyfert; stars : novae, cataclysmic variables; X-rays : binaries; techniques : spectroscopic; X-rays : general
资金
- STFC [PP/D001013/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/D001013/1] Funding Source: researchfish
Optical spectroscopic identification of the nature of 21 unidentified southern hard X-ray objects is reported here in the framework of our campaign aimed at determining the nature of newly-discovered and/or unidentified sources detected by INTEGRAL. Our results show that 5 of these objects are magnetic Cataclysmic Variables (CVs), 4 are High-Mass X-ray Binaries (HMXBs; one of which is in the Large Magellanic Cloud) and 12 are Active Galactic Nuclei (AGNs). When feasible, the main physical parameters for these hard X-ray sources are also computed using the multiwavelength information available in the literature. These identifications further underscore the importance of INTEGRAL in the study of the hard X-ray spectrum of AGNs, HMXBs and CVs, and the usefulness of a strategy of catalogues cross-correlation plus optical spectroscopy to securely pinpoint the actual nature of the X-ray sources detected with INTEGRAL.
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