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Origin of the DA and Non-DA White Dwarf Stars

Published online by Cambridge University Press:  12 April 2016

Harry L. Shipman
Harry L. Shipman*
Affiliation:
Physics and Astronomy Department, University of Delaware Newark, DE 19716,USA

Extract

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Understanding the origin of DA and non-DA stars — the bifurcation of the white dwarf cooling sequence — is one of oldest and perniciously difficult problems in the white dwarf research field. Processes which could play a role have been discussed for years. For example, the idea of diffusive element separation was suggested by Schatzman (1958). The suggestion of convective mixing goes back at least as far as Strittmatter and Wickramasinghe (1971) and Shipman (1972), and this process was actively discussed by a number of authors in the 1970s (see the excellent resume by D’Antona and Mazzitelli 1979).

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 114: White Dwarfs , 1989 , pp. 220 - 235
Copyright
Copyright © Springer-Verlag 1989

References

D’Antona, F., and Mazzitelli, I. 1979, Astr. and Ap., 74, 161.Google Scholar
D’Antona, , 1986, Memorie della Societa Astronomica Italiana 58, 123.Google Scholar
Fleming, T.A., Liebert, J., and Green, R.F. 1986, Ap.J. 308, 176.CrossRefGoogle Scholar
Fontaine, G., Villeneuve, B., Wesemael, F., and Wegner, G. 1984, Astrophys.J. (Letters) 277, 61.CrossRefGoogle Scholar
Fontaine, G., and Wesemael, F., 1987 Proceedings of IAU Colloquium 95: the Second Conference on Faint Blue Stars, Hayes, D.S., Liebert, J., and Philip, A.G.D., eds., (Schenectady: L. Davis Press), 319.Google Scholar
Green, R.F. and Liebert, J. 1987, IAU Colloquium 95, 261 Google Scholar
Greenstein, J.L. 1986, Astrophys. J., 304, 334 CrossRefGoogle Scholar
Habing, H., 1988, in Torres-Peimbert 1988, in press.Google Scholar
Hazard, C. et al. 1980, Nature 285, 463 CrossRefGoogle Scholar
Heap, S.R. 1983, in IAU Symposium 103: Planetary Nebulae, ed. Flower, D.R., (Dordrecht: Reidel), 375.CrossRefGoogle Scholar
Holberg, J. 1987, IAU Colloquium 95, (see Fontaine and Wesemael above), 285.Google Scholar
Iben, I. Jr., 1984, Ap.J. 277, 333.CrossRefGoogle Scholar
Iben, I. jr., and MacDonald, J. 1985, Ap. J., 296, 540 CrossRefGoogle Scholar
Iben, I. jr, and MacDonald, J. 1986, Ap. J., 301, 164 CrossRefGoogle Scholar
Iben, I. Jr., and Renzini, A. 1983, Ann. Rev. Astr. Ap. 21, 271 CrossRefGoogle Scholar
Jacoby, G.H., and Ford, H.C. 1983, Astrophys.J. 266, 298 CrossRefGoogle Scholar
Jordan, S., Koester, D., Wulf-Mathies, C., and Brunner, H. 1987, Astron. Astrophys., in press.Google Scholar
Kaler, J.B., Mo, J.H., and Pottasch, S.R. 1985. Astrophys.J. 288, 305 CrossRefGoogle Scholar
Kaler, J.B. 1985, Ann. Rev. Astron. Astrophys. 23, 89 CrossRefGoogle Scholar
Kenyon, S., Shipman, H., Sion, E., and Aannestad, P. 1988, Astrophys. J. Letters, (in press).Google Scholar
Kenyon, S., Sion, E., and Aannestad, P. 1988, Astrophys. J. Letters, in press.Google Scholar
Koester, D. 1976, Astron. Astrophys. 52, 415.Google Scholar
Kudritzki, 1988, in Torres-Peimbert 1988.Google Scholar
Liebert, J. 1986, in Proceedings of IAU Colloquium No. 87: Hydrogen-Deficient Stars and Related Objects, eds. Hunger, K., Schonberner, D., and Rao, N.K., (Dordrecht: Reidel), p. 367. CrossRefGoogle Scholar
Liebert, J., Wesemael, F., Sion, E.M., and Wegner, G. 1984, Ap.J., 277, 692 CrossRefGoogle Scholar
Liebert, J., Wesemael, F., Hansen, C., Fontaine, G., Shipman, H., Sion, E., Winget, D., and Green, R., Ap.J. 309, 241.CrossRefGoogle Scholar
Liebert, J., Fontaine, G., and Wesemael, F. 1987, in Memoria della Societa Astronomica Italiana: 58, 17 Google Scholar
Mendez, R.H., Miguel, C.H., Heber, U., and Kudritzki, R.P. 1986, in Proceedings of IAU Colloquium No. 87: Hydrogen-Deficient Stars and Related Objects, eds. Hunger, K., Schonberner, D., and Rao, N.K., (Dordrecht: Reidel), p. 323.CrossRefGoogle Scholar
Mendez, R.H. 1987, IAU Colloquium 95 (see Fontaine and Wesemael above), 191.Google Scholar
Mendez, R.H., Kudritzki, R.P., Herrero, A., Husfeld, D., and Groth, H.G. 1988, Astron. Astrophys. 190, 113.Google Scholar
Mendez, 1988, in Torres-Peimbert 1988, in press.Google Scholar
Michaud, G., Fontaine, G., and Charland, Y. 1984, Ap.J., 280, 247 CrossRefGoogle Scholar
Oswalt, T., Sion, E., and Hintzen, P. 1988, Astrophys.J. Letters, in press.Google Scholar
Paerels, F., and Heise, J. 1988, Astrophys. J., submitted.Google Scholar
Peimbert, M., and Torres-Peimbert, S. 1983, in IAU Symposium 103: Planetary Nebulae, ed. Flower, D.H., (Dordrecht: Reidel), 375.Google Scholar
Perinotto, M. 1983, IAU Simposium 103.Google Scholar
Petre, R., Shipman, H.L., and Canizares, C.L. 1986, Ap. J. 304, 356 CrossRefGoogle Scholar
Renzini, A. 1988, in Torres-Peimbert 1988.Google Scholar
Renzini, A. 1983, in Planetary Nebulae, ed. D.R.Flower, , p. 267.CrossRefGoogle Scholar
Schatzman, E. 1958, White Dwarfs.Google Scholar
Schonberner, D. 1977, Astr. Ap. 57, 437 Google Scholar
Shipman, H. 1988, in Torres-Peimbert 1988.Google Scholar
Shipman, H. 1987, IAU Colloquium 95, (see Fontaine and Wesemael above), 273.Google Scholar
Shipman, H.L. 1972, Ap. J., 177, 723.CrossRefGoogle Scholar
Sion, E.M. 1986, Publ. Astron. Soc. Pac. 98, 821, 1986.CrossRefGoogle Scholar
Sion, E.M., Liebert, J., and Starrfield, S.G. 1985, Astrophys.J. 292, 471 CrossRefGoogle Scholar
Strittaiatter, P.A., and Wickramastnghe, D.T..1971, Mon. Not. Boy. Astron. Soc., 152, 47.CrossRefGoogle Scholar
Torres-Peirabert, S., ed. 1988 Proceedings of IAU Symposium 131: Planetary Nebulae, in press.CrossRefGoogle Scholar
Vauclair, G., and Reisse, C. 1977, Astron.Astrophys. 61, 415 Google Scholar
Vennes, S., Pelletier, C., Fontaine, G., and Wesemael, F. 1988, Astrophys.J. (in press).Google Scholar
Wesemael, F., Green, R.F., and Liebert, J. 1985, Ap. J. Suppl., 58, 379 CrossRefGoogle Scholar
Winget, D., Kepler, S., Robinson, E.L., Nather, R.E., and O’Donoghue, D. 1985, Ap.J. 292, 606.CrossRefGoogle Scholar