"Peremennye Zvezdy",
Prilozhenie,
vol. 10, N 28 (2010)
Prilozhenie,
vol. 10, N 28 (2010)
TYC 717 1091 1, a New Double-Mode RR Lyrae Variable Star, Pulsating in the First and Second Overtone Modes
A. V. Khruslov
Tula, Russia
Received: 13.11.2010; accepted: 16.11.2010
(E-mail for contact: khruslov@bk.ru)
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Remarks: | ||||||||||||||||||||||||||||||
| The variability of TYC 717 1091 1 = ASAS 060623+0803.8 was reported by Pojmański
(2002). ASAS 060623+0803.8 was listed in the ASAS catalog of variable stars as a
MISC/RRC
variable star
with the period
1.000000 d. In 2006, M. Koppelman (http://www.aavso.org/vsx/index.php?view=detail.top&oid=78946
and http://www.aavso.org/vsx/docs/78946/44/GSC717-1091.jpg)
found the RRC nature
of its variability with a period of 0.33225
days.
I re-analysed the ASAS-3 data using the period-search software developed by Dr. V.P. Goranskij for Windows environment. I find that TYC 717 1091 1 is actually an RR Lyrae variable star, pulsating in the first and second overtone modes (an extension of the GCVS RR(B) type, which is defined as fundamental-mode and first-overtone pulsators). The phased light curves plotted for the tabulated elements are shown in the Figure.
The period ratio P2/P1 = 0.7990 is typical of double-mode variables pulsating in the first and second overtone modes. The tabulated coordinates of the variable were drawn from the Tycho2 catalog. B-V = 0.554 (Tycho2), J-H = 0.197 (2MASS). | ||||||||||||||||||||||||||||||
| References: | ||||||||||||||||||||||||||||||
| Pojmański, G., 2002, Acta Astron., 52, 397 |
Light Curve
|