Observations and analysis of the southern binary R Arae

Details Observations and analysis of the southern binary R Arae Observations and analysis of the southern binary R Arae

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.180..233n&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 180, no. 2, June 1991, p. 233-252.

Astronomy and Astrophysics

Astrophysics

2

Eclipsing Binary Stars, Mass Transfer, Missing Mass (Astrophysics), Orbital Elements, Stellar Orbits, Astronomical Photometry, Color-Magnitude Diagram, Light Curve, Luminous Intensity, Ubv Spectra

Scientific paper

This paper investigates the nature of the relatively bright eclipsing variable R Arae (HD 149730A), which has an orbital period of 4.42509 d, from the analysis of photometric UBV observations. The analyses indicate the relative radius of the secondary star is of the order of 0.20. This value is well below the limit which would classify the system as a semidetached binary. These results seem to be somewhat discordant with the spectroscopic and general photometric nature of the system, all of which suggest mass transfer processes to be occurring (therefore a possible semidetached status).

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