随机性对未分辨星团物理参数推导的影响
星系天体物理
2013-01-16 v1
摘要
我们开发了一种快速建模未分辨星团宽波段 UBVRI 积分星等的方法,并用其推导星团的物理参数(年龄、质量和消光)。该方法被应用于 M33 星系星团样本,证明了由未分辨观测推导的年龄和质量与由分辨恒星测光推导的值具有一致性。我们发现,由于 M33 的消光范围较窄,星际消光对所研究样本仅引起轻微的年龄-消光简并。
引用
@article{arxiv.1301.3315,
title = {Stochasticity effects on derivation of physical parameters of unresolved star clusters},
author = {Philippe de Meulenaer and Donatas Narbutis and Tadas Mineikis and Vladas Vansevičius},
journal= {arXiv preprint arXiv:1301.3315},
year = {2013}
}
备注
4 pages, 2 figures. To appear in the proceedings of the conference "Reading the book of Globular Clusters with the lens of stellar evolution", 26 - 28 November 2012, Monte Porzio Catone, Italy, in the Memorie della Societa Astronomica Italiana