1 code implementation • 20 Jun 2016 • Karl D. Gordon, Morgan Fouesneau, Heddy Arab, Kirill Tchernyshyov, Daniel R. Weisz, Julianne J. Dalcanton, Benjamin F. Williams, Eric F. Bell, Luciana Bianchi, Martha Boyer, Yumi Choi, Andrew Dolphin, Leo Girardi, David W. Hogg, Jason S. Kalirai, Maria Kapala, Alexia R. Lewis, Hans-Walter Rix, Karin Sandstrom, Evan D. Skillman
We present the Bayesian Extinction And Stellar Tool (BEAST), a probabilistic approach to modeling the dust extinguished photometric spectral energy distribution of an individual star while accounting for observational uncertainties common to large resolved star surveys.
Astrophysics of Galaxies
1 code implementation • 23 Jul 2015 • Katherine M. Hamren, Constance M. Rockosi, Puragra Guhathakurta, Martha L. Boyer, Graeme H. Smith, Julianne J. Dalcanton, Dylan Gregersen, Anil C. Seth, Alexia R. Lewis, Benjamin F. Williams, Elisa Toloba, Leo Girardi, Claire E. Dorman, Karoline M. Gilbert, Daniel R. Weisz
We explore the ratio (C/M) of carbon-rich to oxygen-rich thermally pulsing asymptotic giant branch(TP-AGB) stars in the disk of M31 using a combination of moderate-resolution optical spectroscopy from the Spectroscopic Landscape of Andromeda's Stellar Halo (SPLASH) survey and six-filter Hubble Space Telescope photometry from the Panchromatic Hubble Andromeda Treasury (PHAT) survey. Carbon stars were identified spectroscopically.
Astrophysics of Galaxies
1 code implementation • 12 Feb 2015 • Claire E. Dorman, Puragra Guhathakurta, Anil C. Seth, Daniel R. Weisz, Eric F. Bell, Julianne J. Dalcanton, Karoline M. Gilbert, Katherine M. Hamren, Alexia R. Lewis, Evan D. Skillman, Elisa Toloba, Benjamin F. Williams
In this paper, for the first time, we measure the stellar age-velocity dispersion correlation in the inner 20 kpc (3. 5 disk scale lengths) of M31 and show that it is dramatically different from that in the Milky Way.
Astrophysics of Galaxies
