Release 11.12 ("Hergest Ridge")
Release 11.12 ("Hergest Ridge")
| Article ID: gc357 | |
| Author | Pasquato, M. et al. |
| Title | Mass Segregation in NGC 2298: Limits on the Presence of an Intermediate Mass Black Hole |
| Journal | The Astrophysical Journal, Volume 699, Issue 2, pp. 1511-1517 |
| Year of publication | 2009 (on gclusters from 2013-07-12 11:32:11 ) |
| Abstract | Theoretical investigations have suggested the presence of intermediate mass black holes (IMBHs, with masses in the 100-10000 M sun range) in the cores of some globular clusters (GCs). In this paper, we present the first application of a new technique to determine the presence or absence of a central IMBH in globular clusters that have reached energy equipartition via two-body relaxation. The method is based on the measurement of the radial profile for the average mass of stars in the system, using the fact that a quenching of mass segregation is expected when an IMBH is present. Here, we measure the radial profile of mass segregation using main-sequence stars for the globular cluster NGC 2298 from resolved source photometry based on Hubble Space Telescope (HST/ACS) data ... |
| Tags | NGC 2298 |
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