ORIGIN OF THE GALACTIC CENTER S-STARS
Journal Article
·
· Astrophysical Journal (Online)
- Department of Physics, Ben-Gurion University, Beer-Sheva 84105 (Israel)
The supermassive black hole at the Galactic center is surrounded by a parsec-scale star disk, with about a hundred massive young stars that move in approximately circular Keplerian orbits. Another group of roughly 20 young stars ('S-stars') follow eccentric, randomly oriented orbits well inside the disk stars. A model is proposed to explain the S-stars. Accordingly, the stars formed originally in the parsec-scale disk through gravitational fragmentation of gas. The newly formed S-stars then migrated inward via the gravitational torques exerted by a Lin-Shu-type spiral density wave on the stars at an inner Lindblad resonance.
- OSTI ID:
- 21333839
- Journal Information:
- Astrophysical Journal (Online), Vol. 702, Issue 1; Other Information: DOI: 10.1088/0004-637X/702/1/L1; Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-4357
- Country of Publication:
- United States
- Language:
- English
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