A Suite of Classical Cepheids Tied to the Binary Cluster Berkeley 58 and NGC 7790

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 : 2024-07-03 DOI:10.1088/1538-3873/ad59c6

Daniel Majaess and David G. Turner

引用次数: 0

Abstract

The classical Cepheids CE Cas A, CE Cas B, CF Cas, and CG Cas are likely members of the binary open cluster comprising NGC 7790 and Berkeley 58. The clusters are of comparable age and in close proximity, as deduced from differentially dereddened UuBPBVGRP photometry, and Cepheid period-age relations. Gaia DR3 astrometric and spectroscopic solutions for the clusters are likewise consistent. Conversely, the seemingly adjacent open cluster NGC 7788 is substantially younger and nearer.

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与双星团伯克利58和NGC 7790有关的一组经典仙王座流星体

经典的倒飞石 CE Cas A、CE Cas B、CF Cas 和 CG Cas 很可能是由 NGC 7790 和 Berkeley 58 组成的双开口星团的成员。这两个星团的年龄相当，而且距离很近，这是由UuBPBVGRP光度测定和仙王座周期-年龄关系推断出来的。Gaia DR3 对这些星团的天体测量和光谱解法也是一致的。相反，看似相邻的疏散星团 NGC 7788 却要年轻得多，而且距离更近。

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.