A search for duplicity in the weak G-band stars

Details A search for duplicity in the weak G-band stars A search for duplicity in the weak G-band stars

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pasp...96..609t&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 96, Aug. 1984, p. 609-612.

Other

6

Binary Stars, Radial Velocity, Stellar Evolution, Stellar Spectra, Giant Stars, Orbital Elements, Reference Stars

Scientific paper

The radial velocities of seven weak G-band stars have been monitored for a period of over two years. Velocity variations are seen in the known spectroscopic binary HR 1023, from which the authors redetermine the orbital solution. Small-amplitude variations are present in the velocities of 37 Com and HR 6791, and the other four stars have constant velocities. These results indicate that, unlike the Ba II stars which have been discovered recently to be all binaries, the weak G-band stars do not have an unusually high incidence of duplicity. The origin of the weak G-band phenomenon must be sought after in a scenario of single-star evolution.

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