arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.13883astro-ph.SRastro-ph.GA
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星群II巨HD 122563中的类太阳振荡

Sun-like Oscillations in the Population II giant HD 122563

Orlagh Creevey, Frédéric Thévenin, Frank Grundahl, Enrico Corsaro, Mads F. Andersen, Victoria Antoci, Lionel Bigot, Remo Collet, Pere L. Pallé, Bernard Pichon, David Salabert

摘要:

自2016年以来,我们一直在使用特内里费岛上的SONG望远镜监测贫金属的第二族巨人HD 122563的径向速度变化。我们已经探测到了全球地震量numax,它提供了与恒星参数有关的信息。通过将这些数据与补充数据相结合,我们得出了新的精确的表面重力,半径和到恒星的距离。我们的结果得到证实,使用视差从盖亚DR2。我们提出了这些结果及其影响。

英文摘要:

We have been monitoring the metal-poor Population II giant, HD 122563, for radial velocity variations since 2016 using the SONG telescope on Tenerife. We have detected the global seismic quantity, numax, which provides information related to the stellar parameters. By combining these data with complementary data, we derive a new precise surface gravity, radius and distance to the star. Our results are corroborated by using the parallax from Gaia DR2. We present these results and some of their implications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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