A populous intermediate-age open cluster and evidence of an embedded cluster among the FSR globular cluster candidates

A populous intermediate-age open cluster and evidence of an embedded cluster among the FSR globular cluster candidates
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FSR 球状星团候选者中人口稠密的中年疏散星团和嵌入星团的证据

DOI:
10.1111/j.1365-2966.2008.12863.x
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发表时间:
2007
影响因子:
4.8
通讯作者:
C. Bonatto
C. Bonatto
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
E. Bica;C. Bonatto

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我们研究了从 Froebrich、Scholz & Raftery 目录中选择的球状星团 (GC) 候选者 FSR 1603 和 FSR 1755 的性质。它们的特性是通过两微米全天巡天场恒星去污染光度测量来研究的,该光度测量用于构建颜色星等图(CMD)和恒星径向密度剖面。 FSR 1603 有疏散星团 Ruprecht 101 作为光学对应物,我们证明它是一个巨大的中龄星团。 FSR 1603的相关参数为年龄 ≈1 Gyr,距太阳距离 d� ≈ 2.7 kpc,银河心距 RGC ≈ 6.4 kpc,核心半径 RC ≈ 1.1 pc,质量函数斜率 χ ≈ 1.8,观测到的恒星质量(对于质量在 1.27 m 2.03 M� 范围内的恒星) Mobs ≈ (5)
We study the nature of the globular cluster (GC) candidates FSR 1603 and FSR 1755 selected from the catalogue of Froebrich, Scholz & Raftery. Their properties are investigated with Two-Micron All-Sky Survey field-star decontaminated photometry, which is used to build colour‐magnitude diagrams (CMDs) and stellar radial density profiles. FSR 1603 has the open cluster Ruprecht 101 as optical counterpart, and we show it to be a massive intermediate-age cluster. Relevant parameters of FSR 1603 are the age ≈1 Gyr, distance from the Sun d� ≈ 2.7 kpc, Galactocentric distance RGC ≈ 6.4 kpc, core radius RC ≈ 1.1 pc, mass function slope χ ≈ 1.8, observed stellar mass (for stars with mass in the range 1.27 m 2.03 M� ) Mobs ≈ (5)
FSR 0190:另一个古老的遥远星系团
DOI: 10.1111/j.1745-3933.2007.00409.x
发表时间: 2008
期刊: Letters
影响因子: --
作者:
Froebrich D
通讯作者: Froebrich D