Article in PDF |
"Peremennye Zvezdy", Prilozhenie, vol. 9, N 14 (2009) |
ISSN 2221–0474 |
Received: 16.04.2009; accepted: 3.06.2009
(E-mail for contact: khruslov@bk.ru)
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Remarks: |
According to ASAS-3 data (Pojmanski 2002), TYC 6849 00019 1, listed in the
ASAS catalog of variable stars as a fundamental mode Cepheid (period 3.3801 d),
is actually a double-mode Cepheid. The phased light curves plotted for the following
elements:
JD(max) = 2453187.24 + 4.82201 x E (fundamental mode) and JD(max) = 2453185.60 + 3.37986 x E (first overtone mode), are given in the Figure. The period ratio P1/P0=0.7009 is typical for beat Cepheids. B - V = 1.523 (Tycho2), J - H = 0.571 (2MASS). ASAS-3 observations were analyzed using the period-search software developed by Dr. V.P. Goranskij for Windows environment. The coordinates are from the Tycho2 catalog. |
References: |
Pojmanski G., 2002, Acta Astronomica, 52, 397 |
Light Curve The phased light curves. Top panels: ASAS-3 data folded with the fundamental-mode and the first overtone periods. Bottom panels: the same curves after prewhitening the other oscillation. |