Mass Transfer Variations in UX Monocerotis: Eight Years of Automated Photometric Monitoring

Details Mass Transfer Variations in UX Monocerotis: Eight Years of Automated Photometric Monitoring Mass Transfer Variations in UX Monocerotis: Eight Years of Automated Photometric Monitoring

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aj....138.1435o&link_type=abstract

The Astronomical Journal, Volume 138, Issue 5, pp. 1435-1441 (2009).

Astronomy and Astrophysics

Astronomy

2

Binaries: Eclipsing, Stars: Individual: Ux Monocerotis, Techniques: Photometric

Scientific paper

We analyze eight years (1999-2007) of automated photometric observations of the active Algol binary UX Monocerotis to search for mass transfer bursts similar to those seen in U Cephei. The largest photometric anomaly is the mean gainer luminosity difference between the stream-impact hemisphere and the opposite hemisphere. We find an updated Wilson-Devinney solution for earlier six-color observations. The UX Mon donor star fills its Roche lobe and the gainer nearly fills its rotational lobe. Instead of isolated bursts of the U Cep type, we found nearly continuous brightness fluctuations likely produced by variable mass transfer. We discuss implications for mass transfer.

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