Discovery of a 7.1 hour period and eclipses from MXB 1659-29
1984; IOP Publishing; Volume: 283; Linguagem: Inglês
10.1086/162361
ISSN1538-4357
Autores Tópico(s)Stellar, planetary, and galactic studies
Resumoview Abstract Citations (69) References (28) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Discovery of a 7.1 hour period and eclipses from MXB 1659-29. Cominsky, L. R. ; Wood, K. S. Abstract A 7.1 hr period has been discovered in the X-ray emission from the 'transient' X-ray burst source MXB 1659-29. Erratic variations in X-ray flux are seen during approximately 25 percent of the 7.1 hr cycle; at the end of this period, a stable dip in the flux occurs. Further analysis indicates that this dip is, in all probability, an eclipse by the companion star in the low-mass binary system. The short (about 15 minute) eclipse duration is used to refine the period determination (7.114104 + or - 0.000168 hr) and to constrain the companion star mass and binary system parameters. The companion star is found to be in the range 0.25-0.9 solar mass; probabilistic arguments and observations of cataclysmic variables with comparable periods indicate that the companion star is most likely less massive than the standard theories would indicate. Publication: The Astrophysical Journal Pub Date: August 1984 DOI: 10.1086/162361 Bibcode: 1984ApJ...283..765C Keywords: Eclipsing Binary Stars; Periodic Variations; Stellar Flares; X Ray Sources; Companion Stars; Heao 1; Light Curve; Neutron Stars; Orbital Elements; Stellar Luminosity; Stellar Mass; X Ray Spectra; Astrophysics full text sources ADS | data products SIMBAD (1)
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