Home List of Titles Potential formation sites of super-star clusters in ultraluminous infrared galaxies
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/210185
- Potential formation sites of super-star clusters in ultraluminous infrared galaxies
- Bekki, Kenji; Couch, Warrick J.
- Recent observational results on high spatial resolution images of ultraluminous infrared galaxies (ULIGs) have revealed very luminous, young, compact, and heavily obscured super-star clusters in their central regions, suggested to be formed by gas-rich major mergers. By using stellar and gaseous numerical simulations of galaxy mergers, we first demonstrate that the central regions of ULIGs are the most promising formation sites of super-star clusters owing to the rather high gaseous pressure of the interstellar medium. Based on simple analytical arguments, we then discuss the possibility that super-star clusters in a ULIG can be efficiently transferred into the nuclear region owing to dynamical friction and consequently merge with one another to form a single compact stellar nucleus with a seed massive black hole. We thus suggest that multiple merging between super-star clusters formed by nuclear starbursts in the central regions of ULIGs can result in the formation of massive black holes.
- Publication type
- Journal article
- The Astrophysical Journal Letters, Vol. 557, no. 1 (Aug 2001), pp. L19-L22
- Publication year
- FOR Code(s)
- 0201 Astronomical and Space Sciences; 0305 Organic Chemistry; 0306 Physical Chemistry (Incl. Structural)
- Galaxies: active; Galaxies: interactions; Galaxies: kinematics and dynamics
- University of Chicago Press
- Publisher URL
- Copyright © 2001 The American Astronomical Society. All rights reserved.
- Peer reviewed