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

被引：0
|
作者：
Majaess, Daniel [1 ]
Turner, David G. [2 ]
Minniti, Dante [3 ,4 ]
Alonso-Garcia, Javier [5 ,6 ]
Saito, Roberto K. [7 ]
机构：
[1] Mt St Vincent Univ, Halifax, NS, Canada
[2] St Marys Univ, Halifax, NS, Canada
[3] Univ Andres Bello, Fac Ciencias Exactas, Inst Astrofis, Dept Ciencias Fis, Ave Fernandez Concha 700, Santiago, Chile
[4] Vatican Observ, Specola Vaticana, V-00120 Vatican City, Vatican
[5] Univ Antofagasta, Ctr Astron, Ave Angamos 601, Antofagasta, Chile
[6] Millennium Inst Astrophys, Nuncio Monsenor Sotero Sanz 100,Of 104, Santiago, Chile
[7] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, Brazil
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2024年 / 136卷 / 09期
关键词：
COSMIC DISTANCE SCALE; CLASSICAL CEPHEIDS; MILKY-WAY; DATA RELEASE; METALLICITY; ISOCHRONES; MEMBERSHIP; VARIABLES; ANCHORS;
D O I：
10.1088/1538-3873/ad7405
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The classical Cepheid KQ Sco is a valuable anchor for the distance scale because of its long pulsation period (28.(d)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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页数：4
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