Stellar streams and dark matter halos of luminous galaxies

Details Stellar streams and dark matter halos of luminous galaxies Stellar streams and dark matter halos of luminous galaxies

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005newar..49..209c&link_type=abstract

New Astronomy Reviews, v. 49, iss. 2-6 [SPECIAL ISSUE], p. 209-211.

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We have measured the mass of the Andromeda galaxy (M31) using a Keck/DEIMOS kinematic survey of red giant branch (RGB) stars lying in a giant tidal stream from a previous galactic encounter. The most likely value of the total mass of M31 is M(total) = 6.5 × 1011 Mo out to 145 kpc. Further analysis of these data will yield robust constraints on the shape of the dark matter halo.

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