The Valuable Long-period Cluster Cepheid KQ Scorpii and other Calibration Candidates

IF 3.3 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Publications of the Astronomical Society of the Pacific Pub Date : 2024-09-11 DOI:10.1088/1538-3873/ad7405

Daniel Majaess, David G. Turner, Dante Minniti, Javier Alonso-Garcia and Roberto K. Saito

引用次数: 0

Abstract

The classical Cepheid KQ Sco is a valuable anchor for the distance scale because of its long pulsation period (28.ͩ7) and evidence implying membership in the open cluster UBC 1558. Analyses tied to Gaia DR3 astrometry, photometry, spectroscopy, radial velocities, and 2MASS-VVV photometry indicate a common distance of 2.15 ± 0.15 kpc (L21 DR3 corrections applied). Additional cluster Cepheid candidates requiring follow-up are identified, and it is suggested that a team of international researchers could maintain a cluster Cepheid database to guide the broader community to cases where consensus exists.

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宝贵的长周期星团天蝎座 KQ 和其他校准候选者

经典的仙王座 KQ Sco 是一个有价值的距离标度锚，因为它的脉动周期很长（28.ͩ7），而且有证据表明它属于开放星团 UBC 1558。与盖亚 DR3 天体测量学、光度测量学、光谱学、径向速度和 2MASS-VVV 光度测量学相关的分析表明，其共同距离为 2.15 ± 0.15 kpc（应用 L21 DR3 修正）。确定了更多需要跟踪的星团头彩候选天体，并建议由国际研究人员组成的团队维护一个星团头彩天体数据库，以指导更广泛的群体发现存在共识的天体。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Publications of the Astronomical Society of the Pacific 地学天文-天文与天体物理

CiteScore

6.70

自引率

5.70%

发文量

103

审稿时长

4-8 weeks

期刊介绍： The Publications of the Astronomical Society of the Pacific (PASP), the technical journal of the Astronomical Society of the Pacific (ASP), has been published regularly since 1889, and is an integral part of the ASP''s mission to advance the science of astronomy and disseminate astronomical information. The journal provides an outlet for astronomical results of a scientific nature and serves to keep readers in touch with current astronomical research. It contains refereed research and instrumentation articles, invited and contributed reviews, tutorials, and dissertation summaries.