Rotation of δ Scuti Stars in the Open Clusters NGC 1817 and NGC 7062

• Autorzy: Molenda-Żakowicz J. , Arentoft T. , Frandsen S. , Grundahl F.
• Języki publikacji: EN

Abstrakty

EN

We report results of spectroscopic and photometric observations of ten δ Sct stars and one eclipsing binary in the open cluster NGC 1817, and of ten δ Sct stars and two other variables in the open cluster NGC 7062. For all targets in NGC 1817 and for three targets in NGC 7062 the radial velocity and projected rotational velocity are determined. For all stars the effective temperature and surface gravity is measured. Two δ Sct stars, NGC 1817 -V1 and NGC 7062 -V1, and the eclipsing binary, NGC 1817 -V18, are discovered to be single-lined spectroscopic binaries. The eclipsing binary δ Sct star NGC 1817 -V4 is discovered to be a double-lined spectroscopic binary. All δ Sct stars which we observed spectroscopically are found to be moderate or fast rotators.

Słowa kluczowe

EN

open clusters: individual: NGC 1817; associations: individual: NGC 1817; open clusters: individual: NGC 7062; associations: individual: NGC 7062; δ Sct; Stars: rotation; binaries: spectroscopic

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2009
• Tom: Vol. 59, No. 1
• Strony: 69--88
• Opis fizyczny: Bibliogr. 29 poz., tab., wykr.

Twórcy

autor

Molenda-Żakowicz J.

• Astronomical Institute, University of Wrocław, ul. Kopernika 11, 51-622 Wrocław, Poland

autor

Arentoft T.

• Department of Physics and Astronomy, Danish AsteroSeismology Center (DASC), Aarhus University, Ny Munkegade 120, Bldg. 1520, 8000 Århus, Denmark

autor

Frandsen S.

• Department of Physics and Astronomy, Danish AsteroSeismology Center (DASC), Aarhus University, Ny Munkegade 120, Bldg. 1520, 8000 Århus, Denmark

autor

Grundahl F.

• Department of Physics and Astronomy, Danish AsteroSeismology Center (DASC), Aarhus University, Ny Munkegade 120, Bldg. 1520, 8000 Århus, Denmark

Bibliografia

• Arentoft, T., Bouzid, M.Y., Sterken, C., Freyhammer, L.M., and Frandsen, S. 2005, PASP, 117, 601.
• Balaguer-Núñez, L., Jordi C., Galadi-Enriquez, D., and Masana, E. 2004, A&A, 426, 827.
• Bessell, M.S., and Brett, J.M. 1988, PASP, 100, 1134.
• Castelli, F., and Kurucz, R.L. 2004, Proc. IAU Symp., 210, “Modelling of Stellar Atmospheres”, Eds. N. Piskunov et al. , eprint arXiv:astro-ph/0405087.
• Castelli, F., and Kurucz, R.L. 2006, A&A, 454, 333.
• Crawford, D.L. 1979, AJ, 84, 1858.
• Cutri, R.M., et al. 2003, “The 2MASS All-Sky Catalog of Point Sources”, University of Massachusetts and Infrared Processing and Analysis Center IPAC/California Institute of Technology.
• Flower P.J. 1996, ApJ, 469, 355.
• Freyhammer, L.M., Arentoft, T., and Sterken, C. 2001, A&A, 368, 580.
• Gray, D.F. 1992, “The Observation and Analysis of Stellar Photospheres” Cambridge University Press.
• Grundahl, F., Stetson, P.B., and Andersen, M.I. 2002, A&A, 395, 481.
• Kinman, T., and Castelli, F. 2002, A&A, 391, 1039.
• Kjeldsen, H., Arentoft, T., Bedding, T., Christensen–Dalsgaard, J., Frandsen, S., and Thompson,M.J. 1998, “Structure and Dynamics of the Interior of the Sun and Sun-like Stars” SOHO 6/GONG 98, ESASP, 418, 385.
• Kjeldsen, H., and Frandsen, S. 1992, PASP, 104, 413.
• Lang, K.R. 1992, “Astrophysical Data I. Planets and Stars”, Springer-Verlag Berlin Heidelberg New York.
• Masana, E., Jordi, C., and Ribas, I. 2006, A&A, 450, 735.
• Michel, E., et al. 1999, A&A, 342, 153.
• Moon, T.T., and Dworetsky, M.M. 1985, MNRAS, 217, 305.
• Napiwotzki, R., Schönberner, D., and Wenske, V. 1993, A&A, 268, 653.
• Olsen, E.H. 1983, A&AS, 54, 55.
• Olsen, E.H. 1984, A&AS, 57, 443.
• Peniche, R., Peña, J.H., Diaz-Martinez, S.H., and Gomez, T. 1990, Rev. Mex. Astron. Astrofis., 20, 127.
• Rasmussen, M.B., Bruntt, H. Frandsen, S., Paunzen, E., and Maitzen, H.M. 2002, A&A, 390, 109.
• Ruciński S.M. 1999, IAU Coll., 170, "Precise Stellar Radial Velocities", Eds. Hearnshaw and Scarfe, ASP Conf. Ser., 185, 82.
• Sbordone, L. 2005, Mem. Soc. Astron. Ital. Suppl., 8, 61.
• Sbordone, L., Bonifacio, P., Castelli, F., and Kurucz, R.L. 2004, Mem. Soc. Astron. Ital. Suppl., 5, 93.
• Sung, H., Bessell, M.S., Lee, H.-W., Kang, Y.H., and Lee, S.-W. 1999, MNRAS, 310, 982.
• Taylor, B.J. 2001, A&A, 377, 473.
• Twarog, B.A., Ashman, K.M., and Anthony-Twarog, B.J. 1997, AJ, 114, 2556.