利用SOPHIE观测南河三的星震
Asteroseismology of Procyon with SOPHIE
摘要:
本文报道了2007年1月在OHP 193-cm望远镜上使用新光谱仪Sophie对F5 IV-V目标南河三A进行的9晚星震观测计划。这是索菲的第一个星震计划,目的是测试仪器与明亮但要求苛刻的星震目标的性能,是多站点网络的一部分。用OHP提供的数据处理软件对苏菲谱进行了处理。然后用统计工具分析了南河三的星震数据。渐近分析已进行考虑可能的曲率中阶梯图分析。这些观测结果证明了索菲星作为星震仪的有效性能,并成功地对大间距进行了清晰的探测。基于54- $μ$ Hz间距的埃歇尔图显示了清晰的脊。峰的识别显示出从约52 $μ$ Hz至56 $μ$ Hz变化的大间距。
英文摘要:
This paper reports a 9-night asteroseismic observation program conducted in January 2007 with the new spectrometer Sophie at the OHP 193-cm telescope, on the F5 IV-V target Procyon A. This first asteroseismic program with Sophie was intended to test the performance of the instrument with a bright but demanding asteroseismic target and was part of a multisite network. The Sophie spectra have been reduced with the data reduction software provided by OHP. The Procyon asteroseismic data were then analyzed with statistical tools. The asymptotic analysis has been conducted considering possible curvature in the echelle diagram analysis. These observations have proven the efficient performance of Sophie used as an asteroseismometer, and succeed in a clear detection of the large spacing. An échelle diagram based on the 54-$μ$Hz spacing shows clear ridges. Identification of the peaks exhibits large spacings varying from about 52 $μ$Hz to 56 $μ$Hz.
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