Gaia数据中的全天区RR Lyrae星
太阳与恒星天体物理
2018-04-12 v1 天体物理仪器与方法
摘要
Gaia 第二次数据发布预计包含约 22 个月观测的数据产品。基于这些数据，我们旨在预先发布一张全天区 RR Lyrae 星的 Gaia 星图。尽管数据全面，其中仍有相当大比例的源采样不足，无法对周期性光变进行傅里叶级数分解。本文描述了在视场穿越次数（远）少于 20 次的情况下识别 RR Lyrae 候选体的挑战。我们给出了结果的一般性考量、其局限性及解释，并展望了在后续 Gaia 数据发布中的改进前景。
引用
@article{arxiv.1804.04079,
title = {All-sky RR Lyrae Stars in the Gaia Data},
author = {Lorenzo Rimoldini and Laurent Eyer and Nami Mowlavi and Dafydd W. Evans and Krzysztof Nienartowicz and Berry Holl and Marc Audard and Leanne P. Guy and Grégory Jevardat de Fombelle and Isabelle Lecoeur-Taïbi and Olivier Marchal and Gisella Clementini and Vincenzo Ripepi and Alessia Garofalo and Roberto Molinaro and Tatiana Muraveva and Ennio Poretti and László Molnár and Emese Plachy and Áron L. Juhász and László Szabados and Joris De Ridder and Sara Regibo and Luis Manuel Sarro Baro and Mauro López del Fresno},
journal= {arXiv preprint arXiv:1804.04079},
year = {2018}
}
备注
5 pages, 1 figure, Proceedings of the RR Lyrae 2017 Conference (Revival of the Classical Pulsators: from Galactic Structure to Stellar Interior Diagnostics), to be published in the Proceedings of the Polish Astronomical Society