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Cited by 414Astrophysical Phenomena and ObservationsStellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.

Stellar Disk in the Galactic Center: A Remnant of a Dense Accretion Disk?

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Levin, Yuri, Beloborodov, Andrei M.·2003·The Astrophysical Journal
DOI 10.1086/376675
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Abstract

Observations of the Galactic center revealed a population of young massive stars within 0.4 pc from Sgr A*—the presumed location of a supermassive black hole. The origin of these stars is a puzzle as their formation in situ should be suppressed by the black hole's tidal field. We find that out of 13 stars whose three-dimensional velocities have been measured by Genzel et al., 10 lie in a thin disk. The half-opening angle of the disk is consistent with zero within the measurement errors and does not exceed 10°. We propose that a recent burst of star formation has occurred in a dense gaseous disk around Sgr A*. Such a disk is no longer present because, most likely, it has been accreted by the central black hole. The three-dimensional orbit of S2, the young star closest to Sgr A*, has been recently mapped out with high precision. It is inclined to the stellar disk by 75°. We find that the orbit should undergo Lense-Thirring precession with the period of ~(6/ a ) × 10 6 yr, where a < 1 is the dimensionless spin of the black hole. Therefore, it is possible that originally the S2 orbit lay in the disk plane. The Lense-Thirring precession can turn the S2 orbit by 75° if a > 0.2( t S2 /6 × 10 6 yr) -1 , where t S2 is the age of S2.

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  1. Collin S., 1999, A&A, 344, 433
  2. Kolykhalov P. I., 1980, Soviet Astron. Lett., 6, 357
  3. Paczynski B., 1978, Acta Astron., 28, 91

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Metadata

Authors
Levin, Y., & Beloborodov, A. M.
Affiliations
  • University of Toronto (CA)
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences (RU)
ORCID
Beloborodov, Andrei M.
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2003-05-16
Volume
590
Issue
1
Pages
L33-L36
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1086/376675
OpenAlex
W1990505184
Cited by
414
References
19
Citations by year
2026: 15 · 2025: 15 · 2024: 16 · 2023: 23 · 2022: 20 · 2021: 14 · 2020: 23 · 2019: 17 · 2018: 15 · 2017: 10 · 2016: 17 · 2015: 11 · 2014: 25 · 2013: 20 · 2012: 21
FWCI
10.61
Type
journal article
Language
en
Open access
Locations
  • The Astrophysical Journal (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysical Phenomena and Observations
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
Keywords
Galactic Center, Sgr A*, young massive stars, stellar disks, S2 star, Lense-Thirring precession, supermassive black holes, black hole accretion disks, three-dimensional velocity, orbital inclination, black hole spin

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