Spectroscopy of late type giant stars

Details Spectroscopy of late type giant stars Spectroscopy of late type giant stars

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984msngr..36....6s&link_type=abstract

ESO Messenger (ISSN 0722-6691), June 1984, p. 6, 7. Research supported by the Swiss National Science Foundation.

Physics

Giant Stars, Late Stars, Stellar Color, Stellar Spectrophotometry, Main Sequence Stars, Metallicity, Telescopes

Scientific paper

An attempt to calibrate broadband RGU colors of late type giant stars in terms of the physical parameters of the objects is reported. The parameters comprise the effective temperature, surface gravity and global metal abundance with respect to the sun. A selection of 21 giant star candidates in the Basel fields Plaut 1, Centaurus III and near HD 95540 were examined to obtain a two color plot. Attention is focused on the G-R color range 1.5-2.15 mag, i.e., spectral types K0-K5. A relationship between R and the metallicity is quantified and shown to have a correlation coefficient of 0.93. No correlation is found between metallicity and gravity or R and the effective temperature.

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