Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 419, Issue 3, Pages 1970-1976Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2966.2011.19849.x
Keywords
accretion, accretion discs; black hole physics; stars: formation; Galaxy: centre
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Funding
- Science & Technology Facilities Council (STFC) [ST/G00711X/1]
- University of Leicester
- BIS
- STFC [ST/G00711X/1, ST/H002235/1, ST/H00856X/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H002235/1, ST/H00856X/1, ST/G00711X/1] Funding Source: researchfish
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We study the dynamical evolution of stars and gas close to the centre of the Milky Way. Any plausible means of forming the young stars observed at the Galactic Centre leaves behind a residual gas disc at similar to 0.01 pc radii. We show that the combined effects of viscous accretion and gravitational interactions with stars do not remove the residual gas efficiently, and that a substantial gas disc, interior to the stellar disc, persists for >10 Myr after the stars form. Since no such disc is currently seen at the Galactic Centre, we argue that it has been accreted by the supermassive black hole. This scenario offers an attractive connection between nuclear star formation and black hole feeding, and we suggest that the missing gas may have been used to power Sgr A*.
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