中文

TOI-3493 b:一颗来自亮型G0型恒星的浓海星球

地球与行星天体物理 2025-04-18 v1 太阳与恒星天体物理

摘要

我们报告了TOI-3493 b的发现,这是一颗在8.15天轨道上穿越亮星(V=9.3)的G0型恒星HD 119355(即TIC 203377303)的亚海星型行星,最初由NASA的TESS空间任务识别。为了确认TESS检测到的行星信号并确定行星质量,我们进行了以HARPS光谱仪为主的密集型多普勒测量活动,收集了径向速度测量数据。我们发现TOI-3493 b位于近圆形轨道上,质量为9.0±1.2 M_earth,半径为3.22±0.08 R_earth,推算出的总密度为1.47±0.23 g/cm³,与由小固体核心包围厚厚的H/He主导大气层组成的构型相符。

关键词

引用

@article{arxiv.2504.12884,
  title  = {TOI-3493 b: A planet with a Neptune-like density transiting a bright G0-type star},
  author = {P. Chaturvedi and E. Goffo and D. Gandolfi and C. M. Persson and A. P. Hatzes and G. Nowak and A. Bonfanti and A. Bieryla and W. D. Cochran and K. A. Collins and S. B. Fajardo-Acosta and S. B. Howell and J. M. Jenkins and J. Korth and J. Livingston and E. Palle and S. N. Quinn and R. P. Schwarz and S. Seager and A. Shporer and K. G. Stassun and S. Striegel and V. Van Eylen and C. N. Watkins and J. N. Winn and C. Ziegler},
  journal= {arXiv preprint arXiv:2504.12884},
  year   = {2025}
}

备注

17 pages, 13 figures, to be published in Astronomy and Astrophysics