The Splash Survey: Washington+ddo51 Photometry Of M31 Dsphs

Details The Splash Survey: Washington+ddo51 Photometry Of M31 Dsphs The Splash Survey: Washington+ddo51 Photometry Of M31 Dsphs

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924417b&link_type=abstract

American Astronomical Society, AAS Meeting #219, #244.17

Astronomy and Astrophysics

Astronomy

Scientific paper

We present Washington+DDO51 photometry for 15 dwarf Spheroidal galaxies (dSphs) in the Andromeda stellar halo as part of the Spectroscopic and Photometric Landscape of the Andromeda Stellar Halo (SPLASH) survey. The Washington+DDO51 filter system is uniquely able to identify the small fraction of M31 red giant branch (RGB) stars among the overwhelming sky density of foreground Milky Way dwarf stars at similar surface temperatures. Thus, this approach provides an unparalleled opportunity to probe these already diffuse satellites to their even lower densities at larger angular radii and trace the structure the structure of each dSph to at least five times the sensitivity of previous photometric surveys. Apart from using the identified RGB candidates to derive structural parameters of each satellite, we also use isochrone fitting techniques to derive estimates of the satellite tip of the RGB distances and metallicities.

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