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Ca II H and K and Hα, and Li Abundances in the Pleiades Late K Main-Sequence

Published online by Cambridge University Press:  12 April 2016

R. J. García López ,
R. Rebolo ,
J. E. Beckman  and
A. Magazzù
R. J. García López
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain
R. Rebolo
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain
J. E. Beckman
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain
A. Magazzù
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain Osservatorio Astrofisico di Catania, Città Universitaria, I-95125 Catania, Italy

Abstract

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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, Hα 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
Part IV Stellar activity
Information
International Astronomical Union Colloquium , Volume 130: The Sun and Cool Stars: activity, magnetism, dynamos , 1991 , pp. 443 - 445
Copyright
Copyright © Springer-Verlag 1991

References

Barry, D.C.: 1988, Astrophys. J. 334, 436 CrossRefGoogle Scholar
Blanco, C., Catalano, S., Marilli, E., Rodonò, M.: 1974, Astron. Astrophys. 33, 257 Google Scholar
Butler, R.P., Cohen, R.D., Duncan, D.K., Marcy, G.W.: 1987, Astrophys. J. Letters 319, L19 Google Scholar
García López, R. J., Rebolo, R., Magazzù, A., Beckman, J.E.: 1990, in IAU Symp. 145 Evolution of Stars: The Photospheric Abundance Connection, in pressGoogle Scholar
Kelch, W.L., Linsky, J.L., Worden, S.P.: 1979, Astrophys. J. 229, 700 CrossRefGoogle Scholar
Kraft, R.P., Greenstein, J.L.: 1969, in Low Luminosity Stars, ed. Kumar, S. S., Gordon & Breach, London, p. 65.Google Scholar
Linsky, J.L., Worden, S.P., McClintock, W., Robertson, R.M.: 1979, Astrophys. J. 41, 47 Google Scholar
Mazzei, P., Pigatto, L.: 1989, Astron. Astrophys. 213, Ll Google Scholar
Stauffer, J.R.: 1980, Astrophys. J. 280, 189 Google Scholar
Stauffer, J.R., Hartmann, L.: 1987, Astrophys. J. 318, 337 Google Scholar
Stauffer, J.R., Hartmann, L., Soderblom, D., Burnham, J.N.: 1984, Astrophys. J. 280, 202 Google Scholar
Strassmeier, K.G., Fekel, F.C., Bopp, B.W., Dempsey, R.C., Henry, W.H.: 1990, Astrophys. J. Supp. Ser. 72, 191 Google Scholar