2026-06-08 中国科学院（CAS）
＜関連情報＞
- https://english.cas.cn/newsroom/cas-in-media/202606/t20260608_1161359.shtml
- https://iopscience.iop.org/article/10.3847/1538-3881/ae4a27
アンドロメダハローの星団サンプルの分光学的および測光的研究 The Spectroscopic and Photometric Study of a Star Cluster Sample in Andromeda Halo
Hongrui Gu (顾弘睿), Zhou Fan (范舟), Bingqiu Chen (陈丙秋), Xiaoying Pang (庞晓莹), Juanjuan Ren (任娟娟), Ruizheng Jiang (江睿铮), Song Wang (王松), Kefeng Tan (谈克峰), Nan Song (宋楠), Chun Li (李春),…
The Astronomical Journal Published: 2026 March 24
DOI:10.3847/1538-3881/ae4a27
Abstract
Halo star clusters serve as vital tracers for the formation and evolution of the Andromeda galaxy. In this work, we present physical parameters for 29 M31 halo star clusters, derived from a combination of spectroscopic and photometric data. Low-resolution spectra were acquired using the Beijing Faint Object Spectrograph and Camera spectrograph on the National Astronomical Observatories, Chinese Academy of Sciences Xinglong 2.16 m telescope. For the photometric analysis, we utilized uSC and vSAGE bands from the SAGE survey, complemented by archival data from Galaxy Evolution Explorer (near-ultraviolet and far-ultraviolet), PAN-STARRS (grizy), and the Two Micron All Sky Survey (JHK). Ages and metallicities were determined via ULySS (Vazdekis et al. and pegase-hr) simple stellar population model and the G. Bruzual & S. Charlot stellar population synthesis models. The derived parameters show good agreement with literature values. Notably, for three of these clusters, this study represents the first combined photometric and spectroscopic analysis.
