PLATO 现状：银河考古学的遗产任务
太阳与恒星天体物理
2017-09-06 v2 星系天体物理
摘要
破译银河系的组装历史是一项艰巨的任务，只有能够绘制出高分辨率的年代-化学-运动学银河图才有可能实现。大规模天体测量和光谱巡天的数据将很快为我们提供银河系当前化学-运动学结构的清晰视图，但只能让我们模糊地看到导致当今银河系的时间序列。正如开创性的测光任务 CoRoT、Kepler 和 K2 的数据（正在进行的）开发所证明的那样，星震学指明了前进方向：类太阳振荡巨星是极佳的演化时钟，这得益于其质量的地震约束以及它们遵循的紧密年龄-初始质量关系。本文确定了与银河系形成和演化相关的五个关键未解问题，这些问题需要大量恒星样本的精确准确年龄来解决，并确定了解决这些问题所需的目标数量和恒星性质精度要求。通过量化 PLATO 对红巨星预期的星震学产出，我们证明这些要求在当前仪器设计能力范围内，前提是观测时间足够长以识别演化状态并允许稳健精确地确定声学模式频率。这将使我们获得足够质量的数据，达到 10% 的年龄精度。这是随后达到同等水平准确性这一更宏伟目标的基本前提，而这只有在我们能够仔细评估因对恒星物理理解有限而导致的年龄系统不确定性时才可能实现，这一目标恰好属于 PLATO 核心科学的主要目的。
引用
@article{arxiv.1706.03778,
title = {PLATO as it is: a legacy mission for Galactic archaeology},
author = {A. Miglio and C. Chiappini and B. Mosser and G. R. Davies and K. Freeman and L. Girardi and P. Jofre and D. Kawata and B. M. Rendle and M. Valentini and L. Casagrande and W. J. Chaplin and G. Gilmore and K. Hawkins and B. Holl and T. Appourchaux and K. Belkacem and D. Bossini and K. Brogaard and M. -J. Goupil and J. Montalban and A. Noels and F. Anders and T. Rodrigues and G. Piotto and D. Pollacco and H. Rauer and C. Allende Prieto and P. P. Avelino and C. Babusiaux and C. Barban and B. Barbuy and S. Basu and F. Baudin and O. Benomar and O. Bienayme and J. Binney and J. Bland-Hawthorn and A. Bressan and C. Cacciari and T. L. Campante and S. Cassisi and J. Christensen-Dalsgaard and F. Combes and O. Creevey and M. S. Cunha and R. S. de Jong and P. de Laverny and S. Degl'Innocenti and S. Deheuvels and E. Depagne and J. DeRidder and P. DiMatteo and M. P. Di Mauro and M. -A. Dupret and P. Eggenberger and Y. Elsworth and B. Famaey and S. Feltzing and R. A. Garcia and O. Gerhard and B. K. Gibson and L. Gizon and M. Haywood and R. Handberg and U. Heiter and S. Hekker and D. Huber and R. Ibata and D. Katz and S. D. Kawaler and H. Kjeldsen and D. W. Kurtz and N. Lagarde and Y. Lebreton and M. N. Lund and S. R. Majewski and P. Marigo and M. Martig and S. Mathur and I. Minchev and T. Morel and S. Ortolani and M. H. Pinsonneault and B. Plez and P. G. Prada Moroni and D. Pricopi and A. Recio-Blanco and C. Reyle and A. Robin and I. W. Roxburgh and M. Salaris and B. X. Santiago and R. Schiavon and A. Serenelli and S. Sharma and V. Silva Aguirre and C. Soubiran and M. Steinmetz and D. Stello and K. G. Strassmeier and P. Ventura and R. Ventura and N. A. Walton and C. C. Worley},
journal= {arXiv preprint arXiv:1706.03778},
year = {2017}
}
备注
17 pages, 9 figures, accepted for publication in Astronomical Notes