CfA OIR Division Lunch Talks
Wednesday, April 30, 2014, 11:00 am, Pratt Conference Room

The Most Distant Stars in the Galaxy

John Bochanski (Haverford College)

M giant stars offer our best opportunity to explore the outer reaches of the Galactic halo with today's modern surveys. Using optical and near-infrared photometry from large surveys, we have collected a sample of candidate M giants with distances over 100 kpc. While distinguishing them from the overwhelming number of foreground M dwarfs is challenging, when found these stars are useful for studying the structural and kinematic properties of the Halo. I will report on our group's findings to date, which include some of the most distant stars ever found in our Galaxy.


M giants, M dwarfs and log ratio of the two
John J. Bochanski et al. 2014
The Astronomical Journal 147 76