Stellar Halos Of Galaxies Beyond The Local Group

Details Stellar Halos Of Galaxies Beyond The Local Group Stellar Halos Of Galaxies Beyond The Local Group

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21931102b&link_type=abstract

American Astronomical Society, AAS Meeting #219, #311.02

Astronomy and Astrophysics

Astronomy

Scientific paper

Until recently, quantitative measurements of the global properties of the stellar halos of galaxies have been confined to the Local Group: HST can resolve stellar halo stars but only over a small field of view, while it has been difficult to resolve these stars in ground-based imaging.
I will present new Magellan/IMACS wide-field imaging around 5 galaxies located at 2-4 Mpc, where we detect red giant branch stars in the halos of these galaxies. I will discuss how we use these data in conjunction with GHOSTS HST/ACS imaging of small overlapping fields to measure the luminosities, masses and structure of the halos of these galaxies out to 30 kpc.

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