Fourier Coefficients of OGLE Variables. IV. RR Lyr Stars in ω Cen and towards 47 Tuc

• Autorzy: Morgan S. M. , Dickerson C.
• Języki publikacji: EN

Abstrakty

EN

Fourier coefficients for RR Lyr stars found by the OGLE survey in ω Cen and in the direction of 47 Tuc are presented. A total of 180 light curves were examined. Physical parameters for the stars including mass, luminosity, effective temperature and metallicity were derived using theoretical relations based upon the Fourier coefficients. The well known metallicity variation is seen in the ω Cen RR Lyr variables. The distance modulus to ω Cen is estimated to be ⟨m-M⟩=13.73±0.07 mag, while the RR Lyr stars seen in the direction of 47 Tuc are located in the Small Magellanic Cloud, and have an estimated distance modulus of ⟨m-M⟩=18.78±0.08 mag.

Słowa kluczowe

EN

stars: variables: RR Lyr; stars: fundamental parameters; stars: oscillations

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2000
• Tom: Vol. 50, No. 2
• Strony: 249--268
• Opis fizyczny: Bibliogr. 38 poz., tab., wykr.

Twórcy

autor

Morgan S. M.

• Department of Earth Science, University of Northern Iowa, Cedar Falls, IA 50614-0335, USA

autor

Dickerson C.

• Department of Earth Science, University of Northern Iowa, Cedar Falls, IA 50614-0335, USA

Bibliografia

• Baraffe, I., Alibert, Y., Méra, D., Chabrier, G., and Beaulieu, J.P. 1998, Astrophys. J. Letters, 499, L205.
• Butler, D., Dickens, R. J., and Epps, E. 1978, Astrophys. J., 225, 148.
• Clement, C.M., Ferance, S., and Simon, N.R. 1993, Astrophys. J., 412, 183.
• Clement, C.M., Jankulak, M., and Simon, N.R. 1992, Astrophys. J., 395, 192.
• Clement, C.M., and Shelton, I. 1997, Astron. J., 113, 1711.
• Dorman, B. 1992, Astrophys. J. Suppl. Ser., 81, 221.
• Feuchtinger, M.U. 1999, Astron. Astrophys., 351, 103.
• Harris, W.E. 1996, Astron. J., 112, 1487.
• Jurcsik, J. 1998a, Astron. Astrophys., 333, 571.
• Jurcsik, J. 1998b, Astrophys. J. Letters, 506, L113.
• Jurcsik, J., and Kovács, G. 1996, Astron. Astrophys., 312, 111.
• Jurcsik, J., and Kovács, G. 1998, in: "Stellar Evolution in Real Time", Proceeding of the XXIII General Assembly, JD 8, Ed. E.F. Guinan.
• Kaluzny, J., Kubiak, M., Szymański, M., Udalski, A., Krzemiński, W., and Mateo, M. 1996, Astron. Astrophys. Suppl. Ser., 120, 139.
• Kaluzny, J., Kubiak, M., Szymański, M., Udalski, A., Krzemiński, W., Mateo, M., and Stanek, K. 1997, Astron. Astrophys. Suppl. Ser., 122, 471.
• Kaluzny, J., Kubiak, M., Szymański, M., Udalski, A., Krzemiński, W., and Mateo, M. 1997, Astron. Astrophys. Suppl. Ser., 125, 343.
• Kaluzny, J., Kubiak, M., Szymański, M., Udalski, A., Krzemiński, W., Mateo, M., and Stanek, K.Z. 1998, Astron. Astrophys. Suppl. Ser., 128, 19.
• Kaluzny, J., Hilditch, R.W., Clement, C., and Rucinski, S.M. 1998, MNRAS, 296, 347.
• Kovács, G., and Kanbur, S.M. 1998, MNRAS, 295, 834.
• Kovács, G., Shlosman, I., and Buchler, J.R. 1986, Astrophys. J., 307, 593.
• Kholopov, P.N. 1985, "General Catalog of Variable Stars (GCVS), 4th ed., Moscow: Nauka.
• Martin, W.C. 1938, Leiden Annalen, XVII, Part 2.
• Morgan, S.M., Simet, M., and Bargenquast, S. 1998, Acta Astron., 48, 331.
• Morgan, S.M., Simet, M., and Bargenquast, S. 1998, Acta Astron., 48, 341.
• Morgan, S.M., Simet, M., and Bargenquast, S. 1998, Acta Astron., 48, 509.
• Nemec, J.M., Linnell Nemec, A.F., and Lutz, T.E. 1994, Astron. J., 108, 222.
• Petersen, J.O. 1994, Astron. Astrophys. Suppl. Ser., 105, 145.
• Popowski, P. 2000, Astrophys. J. Letters, 528, L9.
• Poretti, E. 1999, Astron. Astrophys., 346, 487.
• Sandage, A. 1990, Astrophys. J., 350, 603.
• Sandage, A. 1993, Astron. J., 106, 703.
• Schwarzenberg-Czerny, A., and Kaluzny, J. 1998, MNRAS, 300, 251.
• Simon, N.R. 1990, Astrophys. J., 360, 119.
• Simon, N.R., and Clement, C.M. 1993, Astrophys. J., 410, 526.
• Simon, N.R., and Lee, A.S. 1981, Astrophys. J., 248, 291.
• Udalski, A. 1998, Acta Astron., 48, 113.
• Udalski, A., Szymański, M., Kubiak, M., Pietrzyński, G., Woźniak, P., and Żerbuń, K. 1998, Acta Astron., 48, 1.
• Walker, A.R. 1994, Astron. J., 108, 555.
• Walker, A.R. 1998, Astron. J., 116, 20.