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Double-Mode Cepheids

Published online by Cambridge University Press:  12 April 2016

R. S. Stobie
R. S. Stobie*
Affiliation:
Royal Observatory, Blackford Hill Edinburgh EH9 3HJ, Scotland.

Extract

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As their name implies double-mode (or beat) cepheids form a subgroup of cepheid variables which appear to be pulsating simultaneously in two modes. From the period ratio of the two frequencies, the modes have been identified with the fundamental and first overtone modes of radial pulsation. Petersen (1973) was the first to establish that the two periods can be used to determine the masses and radii of these stars independent of any other knowledge such as luminosities, effective temperatures or gravities. The masses derived by this technique are 2 to 3 times lower than the expected evolutionary masses, given that these stars are normal population I cepheids. It is this result that has stimulated much of the subsequent research on double-mode cepheids.

Type
V. Cepheids of Populations I and II
Information
International Astronomical Union Colloquium , Volume 58: Stellar Hydrodynamics , August 1980 , pp. 401 - 412
Copyright
Copyright © Reidel 1980

References

Balona, L.A. & Stobie, R.S. 1979a. Mon. Not. R. astr. Soc., 189, 649.Google Scholar
Balona, L.A. & Stobie, R.S. 1979b. Mon. Not. R. astr. Soc., 189, 659.Google Scholar
Barrell, S.L. 1980. Ph.D. Thesis, Australian National University.Google Scholar
Cogan, B.C. 1977. Astrophys. J., 211, 890.Google Scholar
Cogan, B.C. 1978. Astrophys. J., 224, L 39.Google Scholar
Cox, A.N., Deupree, R.G., King, D.S. & Hodson, S.W. 1977. Astrophys. J., 214, L 127.Google Scholar
Cox, A.N., Hodson, S.W. & King, D.S. 1978a. Astrophys. J., 220, 996.Google Scholar
Cox, A.N., Michaud, G. & Hodson, S.W. 1978b. Astrophys. J., 222, 621.Google Scholar
Dean, J.F., Warren, P.R. & Cousins, A.W.J. 1978. Mon. Not. R. astr. Soc., 183, 569.Google Scholar
Efremov, Yu.N. & Kholopov, P.N. 1975a. Inf. Bull. Var. Stars, No.1073.Google Scholar
Efremov, Yu. N. & Kholopov, P.N. 1975b. Perem. Zvezdy, 20, 133.Google Scholar
Faulkner, D.J. 1977a. Astrophys. J., 216, 49.Google Scholar
Faulkner, D.J. 1977b. Proc astr. Soc. Australia, 3, 124.Google Scholar
Faulkner, D.J. 1977c. Astrophys. J., 218, 269.Google Scholar
Faulkner, D.J. 1979. Preprint.Google Scholar
Faulkner, D.J. & Shobbrook, R.R. 1979. Astrophys. J., 232, 197.Google Scholar
Flower, P.J. 1978. Astrophys. J., 224, 948.Google Scholar
Gieseking, F. & Radeke, H.W. 1978. Astron. Astrophys. Suppl., 33, 207.Google Scholar
Gordon, K.C. & Kron, G.E. 1947. Astrophys. J., 106, 318.Google Scholar
Henden, A.A. 1979. Mon. Not. R. astr. Soc., 189, 149.Google Scholar
Henden, A.A. 1979. Mon. Not. R. astr. Soc., 192, 621.Google Scholar
Hodson, S.W., Stellingwerf, R.F. & Cox, A.N. 1979. Astrophys. J., 229, 642.Google Scholar
Irwin, J.B. 1961. Astrophys. J. Suppl., 6, 253.Google Scholar
Jansen, A.G. 1962. Bull. astr. Inst. Netherl., 16, 141.Google Scholar
Kholopov, P.N. & Efremov, Yu. N. 1967. Astron. Tsirk., No.437, 5.Google Scholar
Kobayashi, E., Saio, H. & Takeuti, M. 1976. Science Reports Tohoku University Ser. I, 59, 67.Google Scholar
Leotta-Janin, C. 1967. Bull. astr. Inst. Netherl., 19, 169.Google Scholar
Madore, B.F. & van den Bergh, S. 1975. Astrophys. J., 197, 55.Google Scholar
Madore, B.F., Stobie, R.S. & van den Bergh, S. 1978. Mon. Not. R. astr. Soc., 183, 13.Google Scholar
Martin, W.L., Warren, P.R. & Feast, M.W. 1979. Mon. Not. R. astr. Soc., 188, 139.Google Scholar
Mitchell, R.I., Iriarte, B., Steinmetz, D. & Johnson, H.L. 1964. Bol. Tonantzintla y Tacubaya, 3, 153.Google Scholar
Niva, G.D. 1979. Astrophys. J., 232, L 43.Google Scholar
Niva, G.D. & Schmidt, E.G. 1979. Astrophys. J., 234, 245.Google Scholar
Oosterhoff, P.Th. 1957a. Bull. astr. Inst. Netherl., L3, 317.Google Scholar
Oosterhoff, P.Th. 1957b. Bull. astr. Inst. Netherl., 13, 320.Google Scholar
Oosterhoff, P.Th. 1960. Bull. astr. Inst. Netherl., 15, 199.Google Scholar
Oosterhoff, P.Th. 1964. Bull. astr. Inst. Netherl., 17, 448.Google Scholar
Pel, J.W. 1976. Astr. Astrophys. Suppl., 24, 413.Google Scholar
Pel, J.W. 1978. Astr. Astrophys., 62, 75.Google Scholar
Petersen, J.O. 1973. Astr. Astrophys., 27, 89.Google Scholar
Petersen, J.O. 1978. Astr. Astrophys., 62, 205.Google Scholar
Petersen, J.O. 1979. Astr. Astrophys., 80, 53.Google Scholar
Petersen, J.O. 1980. Astr. Astrophys., 84, 356.Google Scholar
Pike, C.D. & Andrews, P.J. 1979. Mon. Not. R. astr. Soc., 187, 261.Google Scholar
Roslund, C. & Pretorius, W. 1963. Ark. f. Astr., 3, 201.Google Scholar
Schmidt, E.G. 1972. Astrophys. J., 176, 165.Google Scholar
Simon, N.R. 1979. Astr. Astrophys., 75, 140.Google Scholar
Simon, N.R. 1980. Astrophys. J., 237, 175.Google Scholar
Simon, N.R., Cox, A.N. & Hodson, S.W. 1980. Astrophys. J., 237, 550.Google Scholar
Stellingwerf, R.F. 1975a. Astrophys. J., 195, 441.Google Scholar
Stellingwerf, R.F. 1975b. Astrophys. J., 195, 705.Google Scholar
Stobie, R.S. 1970. Observatory, 90, 20.Google Scholar
Stobie, R.S. 1972. Mon. Not. R. astr. Soc., 157, 167.Google Scholar
Stobie, R.S. 1976. Inf. Bull. Var. Stars, No.1209.Google Scholar
Stobie, R.S. 1977. Mon. Not. R. astr. Soc., 180, 631.Google Scholar
Stobie, R.S. & Balona, L.A. 1979a. Mon. Not. R. astr. Soc., 188, 595.Google Scholar
Stobie, R.S. & Balona, L.A. 1979b. Inf. Bull. Var. Stars, No.1652.Google Scholar
Stobie, R.S. & Balona, L.A. 1979c. Mon. Not. R. astr. Soc., 189, 627.Google Scholar
Stobie, R.S. & Hawarden, T. 1972. Mon. Not.R. astr. Soc., 157, 157.Google Scholar
Szabados, L. 1976. IAU Coll. No.29, Contributed papers, 159.Google Scholar
Szabados, L. 1977. Mitt. Sternw. ung. Akad. Wiss., No. 70.Google Scholar
Tammann, G.A. 1969. Astr. Astrophys., 3, 308.Google Scholar
The, P.-S. & Roslund, C. 1963. Contr. Bosscha Obs., No. 19.Google Scholar
Walraven, Th., Muller, A.B. & Oosterhoff, P.Th. 1958. Bull. astr. Inst. Netherl., 14, 81.Google Scholar
Weaver, H., Steinmetz, D. & Mitchell, R. 1960. Lowell Obs. Bull., 5, 30.Google Scholar
Wenzel, W. 1966. Mitt. Ver. Sterne, 4, 25.Google Scholar
Worley, C.E. & Eggen, O.J. 1957. Astron. J., 62, 104.Google Scholar
Zajoeva, G.V. 1969. Astron. Tsirk., No.502, 7.Google Scholar