Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pyuno....s.367g&link_type=abstract
Publications of the Yunnan Observatory, Suppl. 1999, p. 367 - 371
Astronomy and Astrophysics
Astronomy
By Draconis Stars: Lithium, By Draconis Stars: Metal Abundances
Scientific paper
The authors present the research results on new CCD spectroscopic observations of three chromospherically active binary stars (BY Dra class), which were obtained by means of Coudé echelle spectrograph fed by the 2.16 m telescope at Beijing Astronomical Observatory. With the aid of stellar model atmosphere, the autors have analyzed these spectra and derived the average metal abundance and Li abundance of three systems. Using two special spectral lines, they have alsop discussed the chromospheric activity indicators of them.
Gu Sheng-hong
Liu Yuefu
Tan Huisong
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