High Resolution Spectroscopy of RX J0806.3+1527

Details High Resolution Spectroscopy of RX J0806.3+1527 High Resolution Spectroscopy of RX J0806.3+1527

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2786s&link_type=abstract

Chandra proposal ID #11300603

Physics

Scientific paper

RX J0806.3+1527 (HM Cnc) is a candidate double degenerate binary with possibly the shortest known orbital period. We recently obtained the first high resolution X-ray spectrum of the source with an 80 ksec LETG/HRC-S exposure. This spectrum shows the first emission lines ever detected from the system, with a strong detection of an emission feature centered at 27 Angstrom, and indications of weaker emission lines in the 30 - 50 range. The spectrum does not show strong emission lines of typically abundant elements such as carbon, nitrogen, oxygen, and neon. We propose deeper follow-up observations to confirm the tentative line detections and enable elemental identifications and abundances to constrain the formation and binary evolution history of the source.

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