Period Change and Possible Magnetic Braking in WY Cancri

Yongpo TIAN; Fuyuan XIANG; Wenli XIE; Xia TAO

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Period Change and Possible Magnetic Braking in WY Cancri

机译：WY Cancri中的周期变化和可能的电磁制动

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In this paper, the orbital period change of the RS CVn-type binary system WY Cnc is analyzed through a detaileddescription of the O — C curve by a weighted least-squares method. It is found that the period variation is sufferinga secular period decrease at a rate of dp/dt ￡?-1.20 × 10~(-7)d y~(-1). Since WY Cnc is a typical detached binarysystem, and both components are late-type stars, the long-term period decrease may be caused by angular momentumloss via magnetic braking.

机译：本文通过加权最小二乘法对O-C曲线的详细描述，分析了RS CVn型二元系统WY Cnc的轨道周期变化。发现周期变化以dp /dt≤-1.20×10〜（-7）d y〜（-1）的速率经历了长期变化。由于WY Cnc是典型的独立双星系统，并且两个分量都是晚型恒星，因此长期周期减少可能是由于通过电磁制动产生的角动量损失引起的。

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《PASJ: Publications of the Astronomical Society of Japan》 |2009年第4期|共3页
作者
Yongpo TIAN; Fuyuan XIANG; Wenli XIE; Xia TAO;
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正文语种 eng
中图分类天文学;
关键词
binaries: close; binaries: eclipsing; stars: individual (WY Cancri); stars: mass-loss; tars: period;

机译：二进制文件：关闭;二进制文件：日蚀;星星：个人（WY Cancri）;星星：质量损失;焦油：期间;

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1. Period Change and Possible Magnetic Braking in WY Cancri [J] . Yongpo TIAN, Fuyuan XIANG, Wenli XIE, PASJ: Publications of the Astronomical Society of Japan . 2009,第4期

机译：WY Cancri中的周期变化和可能的电磁制动
2. Time-resolved Spectroscopy of RS Canum Venaticorum Short-Period Systems. II. RT Andromedae, WY Cancri, and XY Ursae Majoris [J] . M. J. Arévalo1, C. Lázaro1 The Astrophysical journal . 2007,第2期

机译：Rs狗Venaticorum短周期系统的时间分辨光谱。 2。 RT Andromedae，WV Crab和XY Ursae
3. A Decade of Starspot Activity on the Eclipsing Short-Period RS Canum Venaticorum Star WY Cancri: 1988-1997 [J] . Paul A. Heckert1, George V. Maloney1, Maria C. Stewart1, The Astrophysical journal . 2007,第3期

机译：在短时期RS Canum Venaticorum星WY Cancri上进行星十年活动的年代：1988-1997
4. Spin period change and the magnetic fields of neutron stars in Be X-ray binaries in the SMC [C] . H. Klus, W.C.G. Ho, M.J. Coe, Physics at the Magnetospheric Boundary Conference . 2014

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6. The silent period induced by transcranial magnetic stimulation in muscles supplied by cranial nerves: normal data and changes in patients. [O] . K J Werhahn, J Classen, R Benecke 1995

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7. Orbital period changes of the nova-like cataclysmic variable AC Cancri: evidence of magnetic braking and an unseen companion [O] . S.-B. Qian, Z.-B. Dai, J.-J. He, 2007

机译：Nova样式灾难性变量AC CANCRI的轨道周期变化：磁动制动的证据和看不见的伴侣
8. Procedure for Estimating the Changes in Cosmic Ray Cutoff Rigidities and Asymptotic Directions at Low and Middle Latitudes During Periods of Enhanced Geomagnetic Activity. [R] . Fluckiger, E. O., Smart, D. F., Shea, M. A. 1986

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Period Change and Possible Magnetic Braking in WY Cancri

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