New CCD photometric investigation of high amplitude δ Scuti star V2455 Cyg

被引：0

作者：

Ostadnezhad, Setareh ^{[1
]}

Forozani, Ghasem ^{[1
]}

Ghanaatian, Mohammad ^{[1
]}

机构：

[1] Payame Noor Univ PNU, Dept Phys, POB 19395-3697, Tehran, Iran

来源：

RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2020年 / 20卷 / 07期

关键词：

techniques: photometric; stars: variables: delta Scuti; stars: individual (V2455 Cyg); PULSATION;

D O I：

10.1088/1674-4527/20/7/105

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

New V-band CCD observations of variable star V2455 Cyg were performed during two nights in September 2017. According to all times of maximum light and new maxima, the O-C curve was analyzed. The period changes of V2455 Cyg were investigated and the rate of increasing period was obtained to be (1/P) dP/dt = 1.99 x 10(-7) yr(-1). Frequency analysis indicated that V2455 Cyg pulsates with the radial p mode and the fundamental frequency is 10.61574 d(-1). Physical parameters of V2455 Cyg at mean temperature were determined (e.g., R = 2.52R. and M = 1.92M.). The position of this star in the H-R diagram confirms that V2455 Cyg is a high amplitude delta Scuti star.

引用

页数：5

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