Ultraviolet Photometry of the Interacting Binary R Arae

Details Ultraviolet Photometry of the Interacting Binary R Arae Ultraviolet Photometry of the Interacting Binary R Arae

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21343408r&link_type=abstract

American Astronomical Society, AAS Meeting #213, #434.08; Bulletin of the American Astronomical Society, Vol. 41, p.304

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a photometric analysis of the interacting binary star R Ara using archival IUE data. We find significant photometric variations on time scales as short as one orbital period (4.4 days), and outside-of-eclipse flux changes of up to 80% within a decade. We also explain quite peculiar wavelength dependencies of the light curve features, attributed to a variable accretion structure. These photometric variations are consistent with a variable system undergoing rapid mass transfer, presumably in the short-lived pre-Algol stage of its evolution.

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