Peremennye Zvezdy

Article in PDF
"Peremennye Zvezdy",
Prilozhenie
,
vol. 8, N 50 (2008)

New RS CVn Stars Without Eclipses III

A. V. Khruslov
Russia, Tula

ISSN 2221–0474

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


#NameOtherCoord (J2000)TypeMaxMinSystemPeriodEpoch (JD)typeSpCommentL.CurveFind.ChartData
1 GSC 1745-0082300 55 08.32, +29 57 17.4RS11.711.85R3.3132451492.95max Comm. 11.PNGchart1.PNGNSVS 6370202 NSVS 6396713
2 TYC 3001 01282 1, BD+38 214010 26 22.76, +37 45 12.9RS9.69.8R17.82451543.5max Comm. 22.PNGchart2.PNGNSVS 4911815 NSVS 7527053
3 GSC 3860-0116914 44 38.30, +53 13 04.4RS10.9511.15R72.2451383.0max Comm. 33.PNGchart3.PNGNSVS 2744839 NSVS 5124274 NSVS 5134279
4 GSC 3495-0123416 29 43.05, +48 22 23.8RS12.813.0R2.66152451394.87max Comm. 44.PNGchart4.PNGNSVS 5269975
5 GSC 4465-0141021 32 53.89, +70 37 43.7RS12.0512.33R22.72451488.6max Comm. 55.PNGchart5.PNGNSVS 1356712

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



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