A note on the statistics of early-type close binaries

Details A note on the statistics of early-type close binaries A note on the statistics of early-type close binaries

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..76...23w&link_type=abstract

Astrophysics and Space Science, vol. 76, no. 1, May 1981, p. 23-33.

Astronomy and Astrophysics

Astrophysics

17

Binary Stars, Early Stars, Statistical Analysis, Stellar Evolution, Stellar Structure, Astronomical Photometry, Light Curve, Mass Transfer, Satellite Instruments

Scientific paper

A degree of contact index (Ic) is defined, and its frequency diagram is given for 16 early-type close binaries. The objective is to determine whether the numbers of such systems are continuous or discontinuous across marginal contact. Data for four of the systems (TU Mus, V499 Sco, Delta Pic, and SZ Cam) derive from new photometric analyses, the results of which are also given. Present results indicate that there is continuity in frequency across marginal contact, although it would be desirable to include more binaries as further observations become available. It is noted that the only two systems in the bin of largest Ic are known to be in the rapid phase of mass transfer.

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