The Variability Of RSG:HV2576

摘要：

The Harvard Variable HV2576,as a red supergiant in the Large Magallanic Cloud,has a complex light variation,which is not explained well. The existing one-period non-linear pulsation model deviated clearly from its light curve. We tried to fit the light curve by a super-position of several harmonic pulsations. By using the PDM,PERIOD04 and SparSpec codes to analyze the light variation,two periods with 525 and 261 days are well established. Furthermore,the 261-day period is found to change according to the wavelet analysis. In addition,the noise obeying the 1/f law. Based on all these facts,we suggest that the light variation of HV2576 may be due to huge convection cells that interplay with oscillation or the third very long period.

关键词： stars:oscillations stars:supergiants stars:variables:other

作者: Ming Yang B.W.Jiang

作者单位: Department of Astronomy,Beijing Normal University,Beijing,100875,China

会议类型: 国际会议

会议名称: The 252th Symposium of the International Astronomical Union(国际天文学联合会第252届研讨会)

会议地点: 海南三亚

会议语种:英文

页码: 267-268

在线出版日期: 2008-04-06（万方平台首次上网日期，不代表论文的发表时间）