New RS CVn Stars Without Eclipses III

A. V. Khruslov
Russia, Tula

Received:   5.12.2008;   accepted:   8.12.2008
(E-mail for contact: khruslov@bk.ru)

Comments:


1. 1WGA J0055.1+2957. The ROTSE data with photometric correction flags (usually rejected) were kept for the analysis.

2. RX J1026.3+3745. Frasca et al. (2006) point out that the star displays all the characteristics of a new BY Dra system. Their spectroscopic and photometric observations show it to be an SB1 K1IV star with the radial velocity period of 15.465 days; the data in the cited paper is not sufficient for a thorough study of the photometric variations.

3. 1RXS J144437.3+531314.

4. 1RXS J162943.5+482211.

5. 1RXS J213253.9+703751. The ROTSE data with photometric correction flags (usually rejected) were kept for the analysis.

Remarks:
I present the discovery of 5 new RS CVn stars without eclipses. This classification is in agreement with the stars' relatively small amplitudes and with our identification of the stars with X-ray sources. A search for variables was carried out in the publicly available data of the Northern Sky Variability Survey (NSVS, Wozniak et al., 2004, also see http://skydot.lanl.gov/nsvs). These observations were analyzed using the period-search software developed by Dr. V.P. Goranskij for Windows environment. The coordinates were drawn either from the Tycho-2 or 2MASS catalogs.

References:
Frasca, A., Guillout, P., Marilli, E., et al., 2006, Astron. Astrophys., 454, 301
Wozniak, P.R., Vestrand, W.T., Akerlof, C.W., et al., 2004, Astron. J., 127, 2436