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arXiv 2610.02956astro-ph.SRastro-ph.EPastro-ph.IM

Plato基准恒星 I. 初始基准样本

Plato benchmark stars I. The initial benchmark sample

  • Royal Observatory of Belgium(比利时皇家天文台)
  • Keele University(基尔大学)
  • Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange(蔚蓝海岸大学,蔚蓝海岸天文台,法国国家科学研究中心,拉格朗日实验室)
  • Uppsala University(乌普萨拉大学)
  • Institut d’Astrophysique Spatiale (IAS), CNRS, Université Paris-Saclay(天体物理研究所,法国国家科学研究中心,巴黎萨克雷大学)
  • Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences(尼古拉·哥白尼天文中心,波兰科学院)
  • Instituto de Astrofísica, Pontificia Universidad Católica de Chile(智利天主教Pontificia大学天体物理研究所)
  • Heidelberg Institute for Theoretical Studies(海德堡理论研究所)
  • INAF – Astronomical Observatory of Abruzzo(意大利国家天体物理研究所 - 阿布鲁佐天文台)
  • INFN, Sezione di Pisa(意大利国家核物理研究所,比萨分部)
  • INAF – Osservatorio Astrofisico di Arcetri(意大利国家天体物理研究所 - 阿尔切特里天文台)
  • Instituto de Estudios Astrofísicos, Universidad Diego Portales(迭戈·波特莱斯大学天体研究所以)
  • LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université(空间与天体力学实验室,巴黎天文台,巴黎文理研究大学,法国国家科学研究中心,索邦大学)

机构由 AI 辅助整理,请以论文原文为准。

T. Merle, P. F. L. Maxted, O. L. Creevey, U. Heiter, D. B. Palakkatharappi, K. G. Hełminiak, C. C. Aguilera Gómez, M. Bazot, S. Cassisi, N. Ebrahimkutty, R. E. … 展开作者

T. Merle, P. F. L. Maxted, O. L. Creevey, U. Heiter, D. B. Palakkatharappi, K. G. Hełminiak, C. C. Aguilera Gómez, M. Bazot, S. Cassisi, N. Ebrahimkutty, R. E. Giribaldi, P. Jofré, F. Kiefer, M. N. Lund, N. Miller, T. Morel, D. Mourard, N. Nardetto, J. -D. do Nascimento,, T. Olander, G. N. Pawar, A. Rebassa-Mansergas, R. Raddi, B. Rojas-Ayala, J. Southworth

AI总结:

该工作定义了PLATO基准恒星(PBS)星表,包含1090颗FGKM主序星和亚巨星,按模型无关参数分为金、银、铜三档,旨在支持PLATO任务各阶段,是迄今最大的基准恒星星表,用于验证自动化流程和测试演化模型。

AI中文摘要:

欧洲空间局(ESA)的PLATO任务旨在利用高精度测光和星震学探测并表征围绕明亮晚型恒星运行的类地系外行星。宿主恒星的精确恒星参数对于系外行星表征和模型基准化至关重要。本工作定义了PLATO基准恒星(PBS)星表,这是一个经过充分表征的恒星综合样本,旨在支持任务的所有阶段。我们汇编了来自食双星和光谱双星、干涉测量、星震学以及大型光谱和测光巡天的数据。基本恒星和大气性质(质量、半径、光度、年龄、有效温度、表面重力、密度和临边昏暗)被赋予了反映其模型依赖程度的质量等级(B1、B2、B3)。还提供了同质化的辅助参数(包括Gaia DR3偏差校正视差、金属丰度、辐射通量、消光、自转周期以及M矮星的X射线通量)。PBS星表包含1090颗FGKM主序星和亚巨星,根据基于模型无关(B1)参数的质量层级分为三档:金级(15颗具有B1质量、半径和光度的恒星)、银级(195颗具有B1质量和半径的恒星)和铜级(416颗具有至少一个B1属性的恒星)。其余恒星具有充分表征的模型依赖(B2)或经验(B3)属性。样本中约40%位于PLATO视场内(LOPN1中285颗,LOPS2中143颗)。PBS样本是迄今为止汇编的最大的基准恒星星表,为验证自动化流程、测试演化模型和跨巡天校准提供了关键资源。该星表可在https URL在线获取,并将定期更新。

英文摘要:

The ESA PLATO mission aims to detect and characterise Earth-size exoplanets orbiting bright, late-type stars using high-precision photometry and asteroseismology. Precise stellar parameters of host stars are essential for exoplanet characterisation and model benchmarking. This work defines the PLATO benchmark stars (PBS) catalogue, a comprehensive sample of well-characterised stars designed to support all mission phases. We compiled data from eclipsing and spectroscopic binaries, interferometry, asteroseismology, and large spectroscopic and photometric surveys. Fundamental and atmospheric stellar properties (mass, radius, luminosity, age, effective temperature, surface gravity, density, and limb darkening) were assigned quality levels (B1, B2, B3) reflecting their degree of model dependence. Homogenized ancillary parameters (including Gaia DR3 bias-corrected parallaxes, metallicities, bolometric fluxes, extinction, rotation periods, and X-ray fluxes for M dwarfs) are also provided. The PBS catalogue contains 1090 FGKM main-sequence and subgiant stars, divided into three quality tiers based on model-independent (B1) parameters: gold (15 stars with B1 mass, radius, and luminosity), silver (195 with B1 mass and radius), and bronze (416 with at least one B1 property). The remaining stars feature well-characterised model-dependent (B2) or empirical (B3) properties. About 40% of the sample lies within the PLATO fields of view (285 in LOPN1 and 143 in LOPS2). The PBS sample represents the largest catalogue of benchmark stars assembled to date, providing a key resource for validating automated pipelines, testing evolutionary models, and cross-survey calibration. The catalogue is available online at https://astro.ulb.ac.be/pbs and will be updated regularly.

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