Publication: Multiwavelength optical observations of the chromospherically active binary system MS Ser
Loading...
Full text at PDC
Publication Date
1999
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Astronomical Society of the Pacific
Citations
Exportar
Abstract
We present here a continuation of our ongoing project of multiwavelength optical observations aimed at studying the chromosphere of active binary systems using the information provided for several optical spectroscopic features that are formed at different heights in the chromosphere. In this contribution we focus our study on the preliminary analysis of the active binary system MS Ser. We have taken Hα and Hβ spectra in 1995 and high resolution echelle spectra (covering Hα, Hβ, Na I D_1, D_2, He I D_3, Ca II H & K, and Ca II λ8662 lines) in 1998. Strong emission in the Ca II H & K and Ca III RT lines, coming from the primary component (recently classified as K2IV) is observed, and the secondary (G8V) also exhibits a small amount of emission. A near complete and variable filling-in of the Hα and Hβ is obtained after the application of the spectral subtraction technique. We detect also some seasonal variations between these two observing runs in comparison with our previous Ca II H & K observations taken in 1993.
Description
© 1999 Astronomical Society of the Pacific.
Meeting on Solar and Stellar Activity - Similarities and Differences (1998. Armagh, Irlanda del Norte)
UCM subjects
Unesco subjects
Keywords
Citation
Alekseev I.Y., 1999, A Rep, (in press)
Barrado D., Fernández Figueroa M.J., García López R.J., De Castro E., Cornide M., 1997, A&A 326, 780
Bopp B.W., Noah P., Klimke A., Africano J., 1981, ApJ 249, 210
Dempsey R.C., Bopp B.W., Henry G.W., Hall D.S., ApJS 86, 293
ESA, 1997, The Hipparcos and Tycho Catalogues, ESA SP-1200
Griffin R.F., 1978, Obs. 98, 257
Lutz T.E. 1970, AJ 75, 1007
Miller R., Osborn W., 1996, Obs. 116, 382
Montes D., Fernández Figueroa M.J., De Castro E., Cornide M., 1994, A&A 285, 609
Montes D., De Castro, E., Fernández Figueroa, M.J., Cornide, M., 1995, A&AS 114, 287
Montes D., Fernández Figueroa M.J., De Castro E., Sanz-Forcada J., 1997, A&AS 125, 263
Montes D., Sanz Forcada J., Fernández Figueroa M.J., De Castro E., Poncet A., 1998, A&A 330, 155
Osten R.A., Saar S.H., 1998, MNRAS 295, 257
Sanz Forcada J., Montes D., Fernández Figueroa M.J., De Castro E., Cornide M., 1998, in ASP Conf. Ser. 155, The Tenth Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, eds. R.A. Donahue & J.A. Bookbinder (San Francisco: ASP), CD-1450
Schmidt-Kaler T. 1982, in Landolt-Börnstein, Vol. 2b, ed K. Schaifers, H.H. Voig (Heidelberg: Springer)
Strassmeier K.G., Fekel F.C., Bopp B.W., Dempsey R.C., Henry G.W., 1990, ApJS 72, 191
Strassmeier K.G., Hall D.S., Fekel F.C., Scheck M., 1993, A&AS 100, 173
Wilson O.C., Bappu M.K.V. 1957, ApJ 125, 661