Roche Configurations of Two Near-Contact Binaries do CAS and SW Lyn

Details Roche Configurations of Two Near-Contact Binaries do CAS and SW Lyn Roche Configurations of Two Near-Contact Binaries do CAS and SW Lyn

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jass...16..209k&link_type=abstract

Journal of Astronomy and Space Sciences, vol. 16, no. 2, p. 209-216.

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Light curves of two near-contact binaries DO Cas and SW Lyn are analyzed to investigate their Roche configurations. We made new BVR observations for DO Cas and employed the published observation data for SW Lyn. Our four night observations for DO Cas were secured over 8 days so that the contamination by the intrinsic light variation is minimized. Based on the WD model, we found that DO Cas could be classified as a near-contact binary, while SW Lyn is better described by semi-detached configuration. Furthermore it is also possible to classify DO Cas as a contact binary. It appears that there are ambiguities in the class of near-contact configuration, and further observations and re-analysis are required to establish the near-contact nature of binary systems.

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