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The Panchromatic Hubble Andromeda Treasury II. Tracing the Inner M31 Halo with Blue Horizontal Branch Stars
Benjamin F. Williams, Julianne J. Dalcanton, Eric F. Bell +7
We attempt to constrain the shape of M31's inner stellar halo by tracing the surface density of blue horizontal branch (BHB) stars at galactocentric distances ranging from 2 kpc to…
The Milky Way's circular velocity curve between 4 and 14 kpc from APOGEE data
Jo Bovy, Carlos Allende Prieto, Timothy C. Beers +30
We measure the Milky Way's rotation curve over the Galactocentric range 4 kpc <~ R <~ 14 kpc from the first year of data from the Apache Point Observatory Galactic Evolution Experi…
PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
A. Bressan, P. Marigo, L. Girardi +4
We present the updated version of the code used to compute stellar evolutionary tracks in Padova. It is the result of a thorough revision of the major input physics, together with…
The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey
III Collaboration, Christopher P. Ahn, Rachael Alexandroff +224
The Sloan Digital Sky Survey III (SDSS-III) presents the first spectroscopic data from the Baryon Oscillation Spectroscopic Survey (BOSS). This ninth data release (DR9) of the SDSS…
The Panchromatic Hubble Andromeda Treasury I: Bright UV Stars in the Bulge of M31
Philip Rosenfield, L. Clifton Johnson, Léo Girardi +20
As part of the Panchromatic Hubble Andromeda Treasury (PHAT) multi-cycle program, we observed a 12' \times 6.5' area of the bulge of M31 with the WFC3/UVIS filters F275W and F336W.…
The VMC Survey. V. First results for Classical Cepheids
V. Ripepi, M. I. Moretti, M. Marconi +11
The VISTA Magellanic Cloud (VMC, PI M.R. Cioni) survey is collecting deep Ks-band time-series photometry of the pulsating variable stars hosted by the system formed by the two Mage…