H1409-45 - A recurrent soft X-ray transient

Details H1409-45 - A recurrent soft X-ray transient H1409-45 - A recurrent soft X-ray transient

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...261..625j&link_type=abstract

Astrophysical Journal, Part 1, vol. 261, Oct. 15, 1982, p. 625-630. Research supported by the U.S. Department of Energy;

Astronomy and Astrophysics

Astrophysics

27

Binary Stars, Variable Stars, X Ray Sources, Heao, Oso-8, Stellar Luminosity

Scientific paper

Satellite observations of the soft X-ray variable H1409-45 and observations of a promising optical counterpart are reviewed. It is shown that the source appears to have several types of X-ray variability, ranging from rapid flickering on time scales of seconds to changes between states of different intrinsic luminosity on time scales of months to years, and that the source's X-ray spectrum appears to be softer in its high-luminosity state. The observations indicate that H1409-45 may be a white dwarf accreting mass from a close binary companion and that the X-ray and optical properties most closely resemble the AM Her variables.

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