A Never Before Explored Phase Space: Resolving Close White Dwarf / Red Dwarf Binaries

Details A Never Before Explored Phase Space: Resolving Close White Dwarf / Red Dwarf Binaries A Never Before Explored Phase Space: Resolving Close White Dwarf / Red Dwarf Binaries

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004hst..prop10255h&link_type=abstract

HST Proposal ID #10255

Computer Science

Hst Proposal Id #10255 Stellar Populations

Scientific paper

We propose an ACS Snapshot imaging survey to resolve a well-defined sample of highly probable white dwarf plus red dwarf close binaries. These candidates were selected from a search for white dwarfs with infrared excess from the 2MASS database. They represent unresolved systems {separations less than approximately 2" in the 2MASS images} and are distributed over the whole sky. Our HST+ACS observations will be sensitive to a separation range {1-20 AU} never before probed by any means. The proposed study will be the first empirical test of binary star parameters in the post-AGB phase, and cannot be accomplished from the ground. By resolving as few as 20 of our 100 targets with HST, we will be able to characterize the distribution of orbital semi-major axes and secondary star masses.

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