Ca II H and K and Hα, and Li abundances in the pleiades late K main-sequence

Bibcode
1991LNP...380..443G
DOI
10.1007/3-540-53955-7_176
García López, R. J.; Rebolo, R.; Beckman, J. E.; Magazzù, A.
Bibliographical reference

The Sun and Cool Stars. Activity, Magnetism, Dynamos. Proceedings of Colloquium No. 130 of the International Astronomical Union, held in Helsinki, Finland, July 17-20, 1990. Editors, I. Tuominen, D. Moss, G. Rudiger; Publisher, Springer-Verlag, Berlin, Germany; New York, NY, 1991. ISBN # 3-540-53955-7. LC # QB524 .I59 P.443, 1991

Advertised on:
0
1991
Number of authors
4
IAC number of authors
0
Citations
5
Refereed citations
5
Description
We have observed seven main sequence stars in the Pleiades, with B - V between 0.98 and 1.41 (5100-3900 K), and with a wide range of rotational velocities, in Ca II H and K, Ha and have derived Li abundances. Our results, combined with literature data, indicate that the most chromospherically active stars are rapid rotators, and that at a given effective temperature the Li-rich stars show the highest chromospheric activity. A different surface coverage of active regions could influence the dichotomy observed in the Li abundance distribution.
Type
Refereed

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