X-ray Measures of Two New Double-Degenerate, Ultracompact AM CVn Binaries

Details X-ray Measures of Two New Double-Degenerate, Ultracompact AM CVn Binaries X-ray Measures of Two New Double-Degenerate, Ultracompact AM CVn Binaries

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cxo..prop.2119a&link_type=abstract

Chandra Proposal ID #08300601

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Chandra Proposal Id #08300601

Scientific paper

AM CVns are extremely rare double-degenerate cataclysmic variables, encompassing the shortest-period binaries known. They are of high interest as possible supernova progenitors, and especially as likely sources of gravity waves. We have found five new AM CVns in the Sloan Digital Sky Survey (SDSS), a very significant expansion of this elite subclass. We propose initial Chandra flux measures for our two most recent discoveries (the others are slated for cycle 7). Chandra data will constrain their mass accretion rates, a key parameter in understanding the evolutionary interplay between mass-transfer and gravitational radiation. The proposed observations will also sensitively assess the feasibility of follow-on, more detailed X-ray timing and/or spectral studies.

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