Probing Late Stages of Stellar Evolution in Supersoft X-ray Binaries

Details Probing Late Stages of Stellar Evolution in Supersoft X-ray Binaries Probing Late Stages of Stellar Evolution in Supersoft X-ray Binaries

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999noao.prop...54c&link_type=abstract

NOAO Proposal ID #1999A-0054

Astronomy and Astrophysics

Astrophysics

Scientific paper

Binary stars provide the only reliable way of determining stellar masses, and hence are vital for understanding the physical properties of stars in various stages of evolution. We propose to observe three supersoft X-ray binaries (SSS) undergoing rapid mass exchange. These system represent a unique stage of stellar evolution for which theory and observed parameters (especially masses) do not agree. The SSS also exhibit collimated high-velocity bipolar outflows which offer an important laboratory for the study of astrophysical jets. We propose an orbital study and investigation of the jets in the galactic source RX J0925-47. Our one spectrum shows features well suited for this project. We will also extend our study of the jets in two LMC systems in order to investigate how the these outflows change with luminosity, mass-transfer rate, viewing angle, and to look for evidence of precession.

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