Abstract

view Abstract Citations (17) References (34) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Stellar Encounters in the Galactic Center: Formation of Massive Stars and Close Binaries Lee, Hyung Mok ; Nelson, Lorne A. Abstract The rate of formation of tidally captured binaries in the Galactic center region is computed using the stellar density distribution based on near-infrared observations. Since the stellar velocity dispersion in the Galactic center (≡170 km s-1) is much higher than that in globular clusters (≡10 km s-1), the binaries formed in the Galactic center are tighter than those formed in the cores of globular clusters. Almost all of the tidally captured systems consisting of two main-sequence stars will have initial periastron separations less than the sum of their radii implying that stellar mergers are very likely to occur. The authors estimate that the integrated rate of tidal captures should be ≡4×10-5yr-1. The tidal capture mechanism can also produce X-ray binaries. Possible evolutionary sequences for these binaries are discussed and it is investigated whether the tidal capture mechanism can explain the number of X-ray sources observed in the galactic center. Publication: The Astrophysical Journal Pub Date: November 1988 DOI: 10.1086/166870 Bibcode: 1988ApJ...334..688L Keywords: Binary Stars; Galactic Nuclei; Star Distribution; Star Formation; X Ray Sources; Infrared Astronomy; Main Sequence Stars; Neutron Stars; Stellar Evolution; White Dwarf Stars; Astrophysics; GALAXIES: NUCLEI; STARS: BINARIES; STARS: STELLAR DYNAMICS full text sources ADS | data products SIMBAD (1)

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call