Observations of low-mass stars in the Pleiades - Has a pre-main sequence been detected

Details Observations of low-mass stars in the Pleiades - Has a pre-main sequence been detected Observations of low-mass stars in the Pleiades - Has a pre-main sequence been detected

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87.1507s&link_type=abstract

Astronomical Journal, vol. 87, Nov. 1982, p. 1507-1514.

Other

71

Binary Stars, Main Sequence Stars, Pleiades Cluster, Star Clusters, Stellar Evolution, Stellar Mass, Stellar Spectrophotometry, Infrared Spectra, Star Distribution, Stellar Luminosity, Visible Spectrum

Scientific paper

BVRIJHK photometry and spectroscopy observations of a large sample of faint, proper motion low-mass stars in the Pleiades cluster are presented. Data indicate that a significant amount of these stars seem to lie on the main sequence with at least 17 m. Another sequence, in the magnitude range 15.0-17.5 m, is displaced along the main sequence by a Delta V of approximately 0.7. In comparing both sequences, it appears that the brighter sequence is more likely to be composed of binaries rather than pre-main-sequence stars. This interpretation, if correct, would imply that pre-main-sequence contraction time scales for solar masses of approximately 0.3 are incorrect by a factor of at least five.

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