Intracluster Stars and the Galactic Halos of Virgo

Details Intracluster Stars and the Galactic Halos of Virgo Intracluster Stars and the Galactic Halos of Virgo

1997-11-18

arxiv.org/abs/astro-ph/9711208v1

Astronomy and Astrophysics

Astrophysics

8 pages, 4 figures; LaTeX; paspconf.sty and epsf.sty included. To appear in the Proceedings of the UC Santa Cruz Workshop on G

Scientific paper

Planetary nebulae can be useful dynamical probes of elliptical galaxy halos, but progress thus far has been hampered by the small data samples available for study. In order to obtain a large sample of planetary nebulae for dynamical analysis, we have re-observed the giant elliptical galaxy M87 in the center of the Virgo Cluster. Surprisingly, we find that the M87 sample is contaminated by a significant fraction of intracluster objects. Follow up observations of three blank fields in the cluster confirm that a significant fraction of Virgo's starlight is intracluster. We discuss the implications of intracluster stars for studies of galaxy halos in clusters.

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