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KX Andromedae: Possibly a Strongly Interacting Binary

Published online by Cambridge University Press:  12 April 2016

S. Stefl
Affiliation:
Astronomical Institute, Ondrejov, Czechoslovakia
P. Harmanec
Affiliation:
Astronomical Institute, Ondrejov, Czechoslovakia
J. Horn
Affiliation:
Astronomical Institute, Ondrejov, Czechoslovakia
P. Koubský
Affiliation:
Astronomical Institute, Ondrejov, Czechoslovakia
S. Kriz
Affiliation:
Astronomical Institute, Ondrejov, Czechoslovakia
P. Hadrava
Affiliation:
Astronomical Institute, Ondrejov, Czechoslovakia
H. Bozic
Affiliation:
Faculty of Geodesy, Zagreb University, Yugoslavia
K. Pavlovski
Affiliation:
Faculty of Geodesy, Zagreb University, Yugoslavia

Extract

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Although KX And (HD 218393, MWC 397) has been observed since the beginning of our century, we have no reliable model of this peculiar emission-line object. Published papers (e.g. Plavec et al. 1982; Kriz and Harmanec 1975 and references therein) indicate that it is a B+K W Ser-type binary with a period of 38.9 days. This paper presents a summary of intensive observations carried out during the last fifteen years.

The observational material used consists of 65 coude spectra obtained with the Ondrejov 2-m telescope, UBV photometry obtained at Hvar Observatory and 28 archival IUE images. The radial-velocity and photometric data are combined with those found in the literature. A PDM period search over the interval 1 to 1000 days unambiguously indicates the 38.9-day period both in RV and photometric data.

Type
Research Article
Copyright
Copyright © Kluwer 1989

References

Kriz, S., Harmanec, P., 1975. Bull. Astron. Inst. Czechosl. 26, 65.Google Scholar
Plavec, M.J., Doblas, J.I., Weiland, J.L., Stone, R.P.S., 1982. IAU Symp. 98, 445.Google Scholar