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Chemically Peculiar Stars in Clusters: Upper and Lower Age Limits of CP Stars

Published online by Cambridge University Press:  12 April 2016

P. North
P. North*
Affiliation:
Institut d’astronomie de l’Université de Lausanne, CH-1290 Chavannesdes-Bois, Switzerland

Abstract

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The evolutionary state of CP Stars is defined using members of open clusters. It is confirmed that all CP stars belong to the main sequence, if the case of Horizontal-Branch Stars is omitted. The frequency of CP Stars as a function of age has been reconsidered: it is found constant for the CP2 stars, but significantly increasing with age for the CP1 (Am) stars.

Type
VII. Photometric Variability and Evolutionary Status
Information
International Astronomical Union Colloquium , Volume 138: Peculiar versus Normal Phenomena in A-Type and Related Stars , 1993 , pp. 577 - 591
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

Abt, H.A. 1979, ApJ 230, 485 Google Scholar
Abt, H.A., Cardona, O., 1983, ApJ 272, 182 Google Scholar
Andersen, J., Jaschek, M., Cowley, C.R. 1984, A&A 132, 354 Google Scholar
Beeckmans, F., Macau, D., Malaise, D. 1974, A&A 33, 93 Google Scholar
Berthet, S. 1992, A&A 253, 451 Google Scholar
Bidelman, W.P., 1960, PASP 72, 24 Google Scholar
Borra, E.F., Joncas, G., Wizinowich, P. 1982, A&A 111, 117 Google Scholar
Crow, E.L., Davis, F.A., Maxfield, M.W.: 1960, Statistics Manual, Dover, New York Google Scholar
Eggen, O.J. 1963, AJ 68, 697 Google Scholar
Fowler, W.A., Burbidge, E.M., Burbidge, G.R., Hoyle, F., 1965, ApJ 142, 423 Google Scholar
Hartoog, M.R. 1976, ApJ 205, 807 Google Scholar
Hauck, B. 1974, A&A 32, 447 Google Scholar
Hauck, B. 1986, A&A 155, 371 Google Scholar
Hauck, B., North, P. 1992, A&A,, in pressGoogle Scholar
Heuvel, E.P.J. van den, 1968, Bull. Astron. Inst. Neth. 19, 326 Google Scholar
Jaschek, C., Jaschek, M., 1962, in: Sahade, J. (Ed.), Symposium on Stellar Evolution. National University, La Plata, Argentina, p. 137 Google Scholar
Jaschek, C., Jaschek, M., 1967, Peculiar and Metallic-Line A Stars in Clusters: An Evolutionary Scheme. In: Cameron, R.C. (Ed.) The Magnetic and Related Stars. Mono Book Corporation, Baltimore, p. 219 Google Scholar
Jenkner, H., Maitzen, H.M. 1987, A&AS 71, 255 Google Scholar
Joncas, G., Borra, E.F. 1981, A&A 94, 134 Google Scholar
Klochkova, V.G., Kopylov, I.M. 1981, SvA 7, L203 Google Scholar
Klochkova, V.G., Kopylov, I.M. 1984a, SvA 28, 80 Google Scholar
Klochkova, V.G., Kopylov, I.M. 1984b, SvA 10, L212 Google Scholar
Klochkova, V.G., Kopylov, I.M. 1986a, Bull. SAO-North Caucasus 20, 1 Google Scholar
Klochkova, V.G., Kopylov, I.M. 1986b, Bull. SAO-North Caucasus 20, 8 Google Scholar
Klochkova, V.G., Kopylov, I.M. 1986c, SvA 30, 146 Google Scholar
Kurtz, D. 1976, ApJS 32, 651 Google Scholar
Lanz, T. 1984, A&A 139, 161 Google Scholar
Leushin, V.V. 1971, Astrofiz. Issled. - Izv. S.A.O. Akad Nauk SSSR 3, 36 Google Scholar
Lodén, L.O., Sundman, A. 1989, J. Astrophys. Astr. 10, 183 Google Scholar
Lynga, G. 1987, Catalogue of open cluster data (5th edition) CDS, Strasbourg Google Scholar
Maeder, A., Meynet, G. 1988, A&AS 76, 411 Google Scholar
Maitzen, H.M. 1976, A&A, 51, 223 Google Scholar
Maitzen, H.M., Floquet, M. 1981, A&A 100, 3 Google Scholar
Maitzen, H.M., Hensberge, H. 1981, A&A 96, 151 Google Scholar
Maitzen, H.M., Schneider, H. 1987, A&AS 71, 431 Google Scholar
Maitzen, H.M., Schneider, H., Weiss, W.W. 1988, A&AS 75, 391 Google Scholar
Maitzen, H.M., Seggewiss, W., Tüg, H. 1981, A&A 96, 174 Google Scholar
Maitzen, H.M., Vogt, N. 1983, A&A 123, 48 Google Scholar
Mermilliod, J.-C. 1976, A&A 53, 289 Google Scholar
Mermilliod, J.-C. 1988, Bull. Inform. CDS 35, 77 Google Scholar
Michaud, G., Charland, Y., Vauclair, S., Vauclair, G., 1976, ApJ 210, 447 Google Scholar
Newell, E.B. 1973, ApJS 26, 37 Google Scholar
Nicolet, B. 1983, A&AS 51, 245 Google Scholar
Nicolet, B., Cramer, N. 1983, A&A 117, 248 Google Scholar
Niedzelski, A., Muciek, M. 1988, Acta Astron. 38, 225 Google Scholar
North, P. 1981, A&A 97, 359 Google Scholar
North, P. 1984, thesis No 2117, Université de Genève Google Scholar
North, P. 1987, A&A 186, 191 Google Scholar
North, P., Cramer, N. 1981, in Upper Main Sequence CP Stars, 23rd Liège Astrophys. Coll., p. 55 Google Scholar
North, P., Kroll, R. 1989, A&AS 78, 325 Google Scholar
Oetken, L. 1986, in IAU Coll. 90, Upper main sequence stars mth anomalous abundances eds. Dworetsky, M. & Mégessier, C., p. 355 Google Scholar
Renson, P., 1965, Ann. d’Astrophys. 28, 679 Google Scholar
Renson, P. 1992, Bull. Inform. CDS 40, 97 Google Scholar
Rufener, F. 1988, Catalogue of Stars measured in the Geneva Observatory Photometric system (fourth edition) Observatoire de GenèveGoogle Scholar
Schaller, G., Schaerer, D., Meynet, G., Maeder, A. 1992, A&A, in pressGoogle Scholar
Slawson, R.W. 1992, private communicationGoogle Scholar
Steiger, P. 1974, Bull. Soc. vaudoise des sciences nat. 72, 53 Google Scholar
van Rensbergen, W., Hammerschlag-Hensberge, G., van den Heuvel, E.P.J. 1978, A&A 64, 131 Google Scholar
Vauclair, S., 1981, AJ 86, 513 Google Scholar
Vauclair, S., Vauclair, G. 1982, ARA&A 20, 37 Google Scholar
Warren, W.H. Jr., Hesser, J.E. 1978, ApJS 36, 497 Google Scholar
Young, A., Martin, A.E. 1973, ApJ 181, 805 Google Scholar