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The coupling of a young stellar disc with the molecular torus in the Galactic Centre
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SYSNO ASEP 0359217 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The coupling of a young stellar disc with the molecular torus in the Galactic Centre Author(s) Haas, J. (CZ)
Šubr, Ladislav (ASU-R)
Kroupa, P. (DE)Number of authors 3 Source Title Monthly Notices of the Royal Astronomical Society. - : Oxford University Press - ISSN 0035-8711
Roč. 412, č. 3 (2011), s. 1905-1912Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords galactic centre ; black holes Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics R&D Projects GD205/09/H033 GA ČR - Czech Science Foundation (CSF) GA202/09/0772 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10030501 - ASU-R (2005-2011) UT WOS 000289159100038 DOI 10.1111/j.1365-2966.2010.18025.x Annotation In this paper, we investigate, by means of numerical N-body computations, the orbital evolution of the stellar disc, which we consider to be initially thin. We include the gravitational influence of both the torus and the late-type stars, as well as the self-gravity of the disc. Our results show that, for a significant set of system parameters, the evolution of the disc leads, within the lifetime of the early-type stars, to a configuration compatible with the observations. In particular, the disc naturally reaches a specific – perpendicular – orientation with respect to the torus, which is indeed the configuration observed in the Galactic Centre. We, therefore, suggest that all the early-type stars may have been born within a single gaseous disc. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2012
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