Diffuse Stellar Substructure in Virgo Ellipticals

Details Diffuse Stellar Substructure in Virgo Ellipticals Diffuse Stellar Substructure in Virgo Ellipticals

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545811m&link_type=abstract

American Astronomical Society, AAS Meeting #215, #458.11; Bulletin of the American Astronomical Society, Vol. 42, p.484

Astronomy and Astrophysics

Astronomy

Scientific paper

As part of our deep wide-field imaging survey of the Virgo Cluster, we have studied in detail the extended stellar halos of the five bright Virgo ellipticals M49, M87, M86, M84, and M89. We examine substructure in these halos by fitting and subtracting elliptical isophotal models out to large radius and low surface brightness (r>100 kpc and muV 28). After subtraction of these isophotal models, these elliptical galaxies show a variety of diffuse structures, from extended stellar streams to complex systems of shells and loops. These features give insight into the accretion history of these galaxies and their dynamical history in the Virgo Cluster. This work has been supported by the National Science Foundation.

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