Age and Mass Estimates for 41 Star Clusters in M33
  • 【DOI】

    10.1088/1009-9271/4/2/125

  • 【摘要】

    In this second paper of our. series, we estimate the age of 41 star clusters,which were detected by Melnick & D'odorico in the nearby spiral galaxy M33, by comparing the integrated photometric measure... 展开>>In this second paper of our. series, we estimate the age of 41 star clusters,which were detected by Melnick & D'odorico in the nearby spiral galaxy M33, by comparing the integrated photometric measurements with theoretical stellar population synthesis models of Bruzual & Charlot. Also, we calculate the mass of these star clusters using the theoretical M/Lv ratio. The results show that, these star clusters formed continuously in M33 from ~ 7 × 106 - 1010 years and have masses between ~ 103 and 2 × 106 M . M33 frames were observed as a part of the BATC Multicolor Survey of the sky in 13 intermediate-band filters from 3800 to 10 000A.The relation between age and mass confirms that the sample star cluster masses systematically decrease from the oldest to the youngest. 收起<<

  • 【作者】

  • 【作者单位】

    National Astronomical Observatories

  • 【刊期】

    天文和天体物理学研究 ISTIC SCI 2004年2期

  • 【关键词】

    galaxies: individual (M33)- galaxies: evolution- galaxies: star clusters 

  • 【基金项目】

    国家重点基础研究发展计划(973计划) 国家自然科学基金