Getting to the Core of The Matter: The Inner Region of M15

Details Getting to the Core of The Matter: The Inner Region of M15 Getting to the Core of The Matter: The Inner Region of M15

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.9039m&link_type=abstract

HST Proposal ID #9039

Computer Science

Hst Proposal Id #9039 Galaxies

Scientific paper

We propose to measure the velocity dispersion profile within 15 arcseconds of the core of M15 to determine whether the mass distribution in this region is best fit by the presence of a Black Hole or by a more extended distribution of mass. We will test three models of the core region, that is possesses {1} a massive Black Hole, {2} a more extended distribution of neutron stars, or {3} is in the process of core collapse. Our observational data will consist of PC WFPC22 images. Using prior images in the HST archive and newly obtained images, we will compute the core velocity dispersion using proper motions. The expected accuracy of these motions is entirely adequate to test the models mentioned above.

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