Properties of the massive X-ray binary 4U 1700 - 37 = HD 153919

Abstract

view Abstract Citations (61) References (36) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Properties of the Massive X-Ray Binary 4U 1700-37 = HD 153919 Heap, S. R. ; Corcoran, M. F. Abstract The system parameters for the massive X-ray binary 4U 1700 - 37 are reexamined in the light of modern spectroscopic theory and new UV and X-ray data. The system is composed of HD 153919, an O6f star having a stronger wind, and an accreting neutron star. Revised parameters for the Of component are derived which are in accord with the parameters of single Of stars, which resolves the problem that 'the O star is undermassive by a factor of 2' formulated by Conti (1978). The ratio of the terminal velocity of the wind to the photospheric escape velocity agrees with those of O stars. The discrepancy between the values of the wind acceleration parameter, derived from X-ray and UV data, is resolved. The acceleration of the wind is similar to that of single OB star winds. It is suggested that the supernova explosion producing the neutron star in 4U 1700 - 37 occurred over a million years ago when HD 153919 was still on the main sequence. Publication: The Astrophysical Journal Pub Date: March 1992 DOI: 10.1086/171086 Bibcode: 1992ApJ...387..340H Keywords: Massive Stars; Neutron Stars; O Stars; X Ray Binaries; Light Curve; Stellar Evolution; Stellar Mass Accretion; Stellar Spectrophotometry; Stellar Winds; Astrophysics; STARS: BINARIES: ECLIPSING; STARS: EMISSION-LINE; BE; STARS: INDIVIDUAL HENRY DRAPER NUMBER: HD 153919; STARS: NEUTRON; ULTRAVIOLET: STARS; X-RAYS: STARS full text sources ADS | data products SIMBAD (2) MAST (1) INES (1)