| Article in PDF |
"Peremennye Zvezdy", Prilozhenie, vol. 8, N 44 (2008) |
Variability of TYC 2760 00635 1
A. V. Khruslov
Russia, Tula
| ISSN 2221–0474 |
Received: 24.09.2008; accepted: 24.11.2008
(E-mail for contact: khruslov@bk.ru)
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Remarks: |
| The variability of TYC 2760 00635 1 was reported by Damerdji et al. (2007). The
star's type was not determined. The possible period, P=3.7648 d, was accompanied
with a comment:
"Bad sampling, period probably wrong". Later Bernhard and Lloyd (2008) investigated
the star using the ROTSE-I/NSVS data (Wozniak et al. 2004). The variable was identified
with an X-ray
source 1RXS J232138.5+344259 and classified as a likely RS CVn
star without eclipses, its period being 2.12082 days.
A big scattering on the phased light curve suggests that eclipses,
not revealed by the authors, can exist in the NSVS data.
I reinvestigated the star using the same ROTSE-I/NSVS data. The observations were analyzed using the period-search software developed by Dr. V.P. Goranskij for Windows environment. In fact, TYC 2760 00635 1 is an eclipsing variable, EA subtype, with a period of 4.243 days. A distortion wave characteristic of RS CVn stars overlaps the eclipsing light curve. MinII = 11.95, D = 0.17P. |
| References: |
| Bernhard, K., Lloyd, C., 2008, OEJV, 89
Damerdji, Y., Klotz, A., Boër, M., 2007, Astron. J., 133, 1470 Wozniak, P.R., Vestrand, W.T., Akerlof, C.W., et al., 2004, Astron. J., 127, 2436 |
Light Curve
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