The Clusters AgeS Experiment (CASE). Variable Stars in the Field of the Globular Cluster NGC~3201

• Autorzy: Kaluzny J. , Rozyczka M. , Thompson I. B. , Narloch W. , Mazur B. , Pych W. , Schwarzenberg-Czerny A.
• Języki publikacji: EN

Abstrakty

EN

The field of the globular cluster NGC 3201 was monitored between 1998 and 2009 in a search for variable stars. BV light curves were obtained for 152 periodic or likely periodic variables, fifty-seven of which are new detections. Thirty-seven newly detected variables are proper motion members of the cluster. Among them we found seven detached or semi-detached eclipsing binaries, four contact binaries, and eight SX Phe pulsators. Four of the eclipsing binaries are located in the turnoff region, one on the lower main sequence and the remaining two slightly above the subgiant branch. Two contact systems are blue stragglers, and another two reside in the turnoff region. In the blue straggler region a total of 266 objects were found, of which 140 are proper motion (PM) members of NGC 3201, and another nineteen are field stars. Seventy-eight of the remaining objects for which we do not have PM data are located within the half-light radius from the center of the cluster, and most of them are likely genuine blue stragglers. Four variable objects in our field of view were found to coincide with X-ray sources: three chromospherically active stars and a quasar at a redshift z≈0.5.

Słowa kluczowe

EN

globular clusters: individual: NGC 3201; stars: variables: general; stars: osscillations; blue stragglers; binaries: eclipsing

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2016
• Tom: Vol. 66, No. 1
• Strony: 31--53
• Opis fizyczny: Bibliogr. 33 poz., rys., tab., wykr.

Twórcy

autor

Kaluzny J.

• Nicolaus Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland

autor

Rozyczka M.

• Nicolaus Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland

autor

Thompson I. B.

• The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA

autor

Narloch W.

• Nicolaus Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland

autor

Mazur B.

• Nicolaus Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland

autor

Pych W.

• Nicolaus Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland

autor

Schwarzenberg-Czerny A.

• Nicolaus Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland

Bibliografia

• Arellano Ferro, A., Ahumada, J.A., Calderon, J.H., and Kains, N. 2014, Revista Mexicana de Astronomia y Astrofisica, 50, 307.
• Clement, C.M., et al. 2001, AJ, 122, 2587.
• Dotter, A., et al. 2010, ApJ, 708, 698.
• Flannery, B. P. 1976, ApJ, 205, 217.
• Gu, S.-h., Chen, P.-s., Choy, Y-k., Leung, K-c., Chung, W.-k., and Poon, T-s. 2004, A&A, 423, 607.
• Harris, W.E. 1996, AJ, 112, 1487.
• Lucy, L.B. 1968a, ApJ, 151, 1123.
• Lucy, L.B. 1968b, ApJ, 153, 877.
• Lucy, L.B. 1976, ApJ, 205, 208.
• Kaluzny, J., et al. 2005, AIP Conf. Proc., 752, 70.
• Kaluzny, J., Thompson, I.B., Rozyczka, M., Pych, W., and Narloch, W. 2014, Acta Astron., 64, 309.
• Landolt, A. 1992, AJ, 104, 372.
• Layden, A.C., and Sarajedini, A. 2003, AJ, 125, 208.
• Mathieu, R.D., Meibom, S., and Dolan, C. J. 2004, ApJ, 602, L121.
• Mazeh, T. 2008, EAS Publications Series, 29, 1.
• Mazur, B., Krzeminski, W., and Thompson, I.B. 2003, MNRAS, 340, 1205.
• Muñoz, C., Geisler, D., and Villanova, S. 2013, MNRAS, 433, 2006.
• Robertson, J.A., and Eggleton, P.P. 1977, MNRAS, 179, 359.
• Rozyczka, M., Kaluzny, J., Thompson, I.B., Rucinski, S.M., Pych, W., and Krzeminski, W. 2013, Acta Astron., 63, 67.
• Schwarzenberg-Czerny, A. 1996, ApJ, 460, L107.
• Schwarzenberg-Czerny, A. 2012, Proceedings of the International Astronomical Union, 285, 81.
• Schwarzenberg-Czerny A., and Beaulieu, J.-P. 2006, MNRAS, 365, 165.
• Shaw, J.S. 1994, Memorie della Societ Astronomia Italiana, 65, 95.
• Stępień, K., and Gazeas, K. 2012, Acta Astron., 62, 153.
• Stetson, P.B. 1987, PASP, 99, 191.
• Stetson, P.B. 1990, PASP, 102, 932.
• Szegö, G. 1939, “Orthogonal polynomials” Colloq. Publ. Amer. Math. Soc., p. 23.
• von Braun, K., and Mateo, M. 2000, AJ, 121, 1522.
• von Braun, K., and Mateo, M. 2002, AJ, 123, 279.
• Webb, N.A., Wheatley, P.J., and Barret, D. 2006, A&A, 445, 155.
• Yan, L., and Mateo, M. 1994, AJ, 108, 1810.
• Zacharias, N., Finch, C.T., Girard, T.M., Henden, A., Bartlett, J.L., Monet, D.G., and Zacharias, M.I. 2013, AJ, 145, 44.
• Zloczewski, K., Kaluzny, J., Rozyczka, M., Krzeminski, W., and Mazur, B. 2012, Acta Astron., 62, 357.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).