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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 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…
PHAT Stellar Cluster Survey I. Year 1 Catalog and Integrated Photometry
L. Clifton Johnson, Anil C. Seth, Julianne J. Dalcanton +21
The Panchromatic Hubble Andromeda Treasury (PHAT) survey is an on-going Hubble Space Telescope (HST) multi-cycle program to obtain high spatial resolution imaging of one-third of t…
The Panchromatic Hubble Andromeda Treasury
J. J. Dalcanton, B. F. Williams, D. Lang +30
The Panchromatic Hubble Andromeda Treasury (PHAT) is an on-going HST Multicycle Treasury program to image ~1/3 of M31's star forming disk in 6 filters, from the UV to the NIR. The…
The Contribution of TP-AGB and RHeB Stars to the Near-IR Luminosity of Local Galaxies: Implications for Stellar Mass Measurements of High Redshift Galaxies
J. Melbourne, Benjamin F. Williams, Julianne J. Dalcanton +9
Using high spatial resolution HST WFC3 and ACS imaging of resolved stellar populations, we constrain the contribution of thermally-pulsing asymptotic giant branch (TP-AGB) stars an…