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Multiperiodicity In RRs and & Scuti Stars: An Observational View

Published online by Cambridge University Press:  12 April 2016

W.S. Fitch
W.S. Fitch*
Affiliation:
Steward Observatory, University of Arizona, Tucson, Arizona 85721, U.S.A.

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On reviewing the observational literature of the recent past on RRs (or dwarf Cepheid or AI Velorum) and δ Scuti stars, it appeared that most present controversy is centered on three specific questions:

  1. (1) Are δ Scuti stars really periodic, or only quasi-periodic?

  2. (2) Are tidal modulations responsible for the slow cyclic variations observed in many of these stars, or not?

  3. (3) Are there any real physical differences between the members of these two groups, or are they actually the same kind of object?

I would like to restrict this review primarily to these questions; and since some of our recent observational results bear directly on questions CI) and (2), and indirectly on question (3), I hope I will be forgiven for describing briefly here some of our current relevant findings.

Type
Invited Papers
Information
International Astronomical Union Colloquium , Volume 29: Multiple Periodic Variable Stars , 1976 , pp. 167 - 193
Copyright
Copyright © Reidel 1976

References

Baglin, A. 1972, Astr. Astrophys., 19, 45.Google Scholar
Baglin, A., Breger, M., Chaevalier, C., Hauck, B., Le Contel, J.-M., Sareyan, J.-P., Valtier, J.-C. 1973, Astr. Astrophys., 23, 221.Google Scholar
Barnes, T. G., Moffett, T. J. 1975, A.J., 80, 48.CrossRefGoogle Scholar
Bessell, M. S. 1969, Ap.J. Suppl., 18, 167.CrossRefGoogle Scholar
Breger, M. 1969, A.J.>, 74, 166.CrossRef,+74,+166.>Google Scholar
Breger, M. 1970, Ap.J., 162, 597.Google Scholar
Breger, M. 1975, in press.Google Scholar
Breger, M., Bregman, J. N. 1975, in press.Google Scholar
Broglia, P. 1959, Nuova serie (Milano): Coritr. Oss. astr. Milano-Merate, No. 142.Google Scholar
Broglia, P., Marin, F. 1974, Astr. Astrophys., 34, 89.Google Scholar
Chandrasekhar, S., Lebovitz, N. R. 1962, Ap.J., 136, 1105.Google Scholar
Chevalier, C. 1971, Astr. Astrophys., 14, 24.Google Scholar
Chevalier, C. 1972, in Stellar Ages, Proc. IAD. Colloquium, No. 17 (Paris-Meudon Obs.).Google Scholar
Chevalier, C, Perrin, M. N., Le Contel, J.-M. 1968, Astrophys. Letters, 2, 175.Google Scholar
Cogan, B. C. 1970, Ap.J., 162, 139.Google Scholar
Cousins, A. W. J., Lagerwey, H. C., Shillington, F. A., Stobie, R. S. 1969, (Capetown): Mon. Notes astr. Soe. Sth. Afr., 28, 25.Google Scholar
Detre, L. 1956, (Budapest): Mitt. Sternw. ungar. Akad. Wiss., No. 40.Google Scholar
Eggen, O. J. 1956, Pub. A. S. P., 68, 238.Google Scholar
Eggen, O. J. 1970, Pub. A. S. P., 82, 274.CrossRefGoogle Scholar
Fath, E. A. 1935, Lick Obs. Bull., 17, 175.Google Scholar
Fath, E. A. 1937, Lick Obs. Bull., 18, 77.Google Scholar
Fath, E. A. 1940, Lick Obs. Bull., 19, 77.Google Scholar
Fitch, W. S. 1955, Ap.J., 121, 690.CrossRefGoogle Scholar
Fitch, W. S. 1960, Ap.J., 132, 701.Google Scholar
Fitch, W. S. 1966, Ap.J., 143, 852.Google Scholar
Fitch, W. S. 1967, Ap.J., 148, 481.CrossRefGoogle Scholar
Fitch, W. S. 1969, Ap.J., 158, 269.Google Scholar
Fitch, W. S. 1973, Astr. Astrophys., 27, 161.Google Scholar
Fitch, W. S., Szeidl, B. 1976, Ap.J., Feb. 1, 1976, in press.Google Scholar
Gray, D. F., Desikachary, K. 1973, Ap.J., 181, 523.Google Scholar
Guman, I. 1955, (Budapest): Mitt. Sternw. ungar. Akad. Wiss., No. 36.Google Scholar
Gupta, S. K. 1973, Observatory, 93, 192.Google Scholar
Hall, D. S., Cannon, R. O. 1974, Acta astr., 24, 79.Google Scholar
Harper, W. E. 1933, Publ. Dom, astrophys. Obs., Victoria, 6, 203.Google Scholar
Hoffleit, D. 1964, Catalog of Bright Stars (New Haven, Conn.: Yale Univ. Obs.)Google Scholar
Hudson, K. I., Chiu, H. Y., Maran, S. P., Stuart, F. E., Vokac, P. R. 1971, Ap.J., 165, 573.Google Scholar
Ibanoglu, C., Gulmen, O. 1974, Astr. Astrophys., 35, 487.Google Scholar
Jenkins, L. F. 1952, General Catalog of Trigonometric Stellar Parallaxes (New Haven, Conn.: Yale Univ. Obs.)Google Scholar
Le Contel, J.-M., Valtier, J.-C., Sareyan, J.-P., Baglin, A., Zribi, G. 1974, Astr. Astrophys. Suppl., 15, 115.Google Scholar
Ledoux, P. 1951, Ap.J., 114, 373.Google Scholar
Leung, K.-C. 1974, A.J., 79, 626.CrossRefGoogle Scholar
Lamb, N. R. 1975, Doctoral Thesis, School of Physics, Univ. Sydney (Sydney, N. S. W.)Google Scholar
Lynds, C. R. 1957, Ap.J., 126, 69.Google Scholar
Millis, R. L. 1973, Pub. A. S. P., 85, 410.Google Scholar
Oosterhoff, P.Th. 1966, BAN, 18, 140.Google Scholar
Petersen, J. O., Jørgensen, H. E. 1972, Astr. Astrophys., 17, 367.Google Scholar
Preston, G. W. 1959, Ap.J., 130, 507.Google Scholar
Robertson, J. W. 1971, Ap.J., 170, 353.Google Scholar
Robertson, J. W. 1975, private communication.Google Scholar
Scaltritti, F. 1973, (Roma): Mem. Soc, astr. ital., 44, 387.Google Scholar
Seeds, M. A., Yanchak, G. A. 1972, The Delta Scuti Stars: An Annotated Catalog and Bibliography (Bartol Research Foundation, The Franklin Institute, Swarthmore, Penna.).Google Scholar
Shobbrook, R. R., Stobie, R. S. 1974, M. N. R. A. S., 169, 643.Google Scholar
Smyth, M. J., Shobbrook, R. R., Stobie, R. S. 1975, M. N. R. A. S., 171, 143.Google Scholar
Szeidl, B. 1974, (Konkoly-Budapest): Comm. 27 IAU. Inf. Bull, var. Stars, No. 903.Google Scholar
Tempesti, P. 1971, Comm. 27 IAU Inf. Bull, var. Stars, No. 596.Google Scholar
Valtier, J.-C., Sareyan, J.-P., Le Contel, J.-M., Zribi, G. 1974, Astr. Astrophys. Suppl., 18, 235.Google Scholar
Vauclair, G., Vauclair, S., Pamjalnikh, A. 1974, Astr. Astrophys., 31, 63.Google Scholar
Walraven, Th. 1955, BAN, 12, 223.Google Scholar
Wehlau, W., Leung, K.-C. 1964, Ap.J., 139, 843.CrossRefGoogle Scholar
Wisniewski, W. Z. 1971, Acta astr., 21, 307.Google Scholar