Location of three stellar X-ray sources at high galactic latitudes with the HEAO 1 scanning modulation collimator
1979; Institute of Physics; Volume: 84; Linguagem: Inglês
10.1086/112575
ISSN1538-3881
AutoresD. A. Schwartz, G. Fabbiano, R. E. Griffiths, H. Bradt, R. Doxsey, Mark Johnston, U. G. Briel, B. Margon,
Tópico(s)Scientific Measurement and Uncertainty Evaluation
Resumoview Abstract Citations (27) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Location of three stellar X-ray sources at high galactic latitudes with the HEAO 1 scanning modulation collimator. Schwartz, D. A. ; Bradt, H. ; Briel, U. ; Doxsey, R. E. ; Fabbiano, G. ; Griffiths, R. E. ; Johnston, M. D. ; Margon, B. Abstract We present locations of the weak, high galactic latitude X-ray sources 2A0526 - 328, 2A1052 + 606, and 4U1249 - 28 as measured with the scanning modulation collimator on HEAO 1. These have been identified with a blue emission line star, a late type star with Ha emission, and the dwarf nova EX Hydrae, respectively. The latter two are only the second examples of hard (2-10 keV) X-ray emission from (possibly) an RS CVn system and from a U Gem type dwarf nova. We have taken several spectra of the first two objects, and discovered night-to-night variability of their emission lines. We conclude that galactic stars must be con- sidered as likely candidates for unidentified X-ray sources at any galactic latitude. Publication: The Astronomical Journal Pub Date: October 1979 DOI: 10.1086/112575 Bibcode: 1979AJ.....84.1560S Keywords: Astrometry; Heao 1; X Ray Sources; Collimators; Dwarf Stars; H Alpha Line; Late Stars; Position (Location); Spectrophotometry; Astronomy; Emission Lines:X-Ray Sources; Spectrophotometry:X-Ray Sources; X-Ray Sources:Optical Counterparts full text sources ADS | data products SIMBAD (3)
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