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arXiv 1202.3518astro-ph.SR
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激变变星V849 Herculis(PG 1633+115)的光度周期和光变

The Photometric Period and Variability of the Cataclysmic Variable V849 Herculis (PG 1633+115)

F. A. Ringwald, Gerald D. Rude, Jonathan J. Roveto, Kelly S. Khamvongsa

摘要:

我们报告了激变变星V849 Her的时间分辨测光,并测量了0.1414 \pm 0.0030天(3.394 \pm 0.072小时)的周期。我们还介绍了2010年和2011年几个星期的测光,以及美国变星观测者协会从1995年到2011年的光变曲线。光谱、由红外线星等推导出的绝对星等和变率都表明V849 Her是一颗类新星变星。我们观察到的浅(0.5等)低态类似于VY雕塑星的不稳定低态,尽管它们可能在12.462 \pm 0.074天的平均周期内准周期性地重复出现。

英文摘要:

We report time-resolved photometry of the cataclysmic variable V849 Her, and measure a period of 0.1414 \pm 0.0030 days (3.394 \pm 0.072 hours). We also present photometry taken over several weeks in 2010 and 2011, as well as light curves from 1995 to 2011 by the American Association of Variable Star Observers. The spectra, absolute magnitude derived from infrared magnitudes, and variability all suggest that V849 Her is a nova-like variable. The shallow (0.5-magnitude) low states we observe resemble the erratic low states of the VY Sculptoris stars, although they may recur quasi-periodically over an average cycle of 12.462 \pm 0.074 days.

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