Haro 11中非常年轻的星团人口
The Extremely Young Star Cluster Population In Haro 11
摘要：
我们对Haro 11的星团人口进行了深入的多波段光度分析。这个星暴星系（log L_FUV = 10.3 L_sun）被认为是一个在高红移附近的莱曼破裂星系（LBG）的类似物。对系统中众多星团的研究是研究星暴相形成和演化的有效途径。事实上，SED拟合模型揭示了一个令人惊讶的年轻星团，年龄在0.5到4000万年之间，估计质量在10^3到10^7太阳质量之间。一个独立的年龄估计已经完成了EW（Halpha）分析的每个集群。最后的分析证实了星团的年轻年龄。我们注意到，年龄在1和10万年之间的集群显示在H（NIC 3/F160 W）和/或I（WFPC 2/F814 W）带相对于进化模型的流量过剩。哈罗11号再次对我们的理解提出了挑战。
英文摘要：
We have performed a deep multi-band photometric analysis of the star cluster population of Haro 11. This starburst galaxy (log L_FUV = 10.3 L_sun) is considered a nearby analogue of Lyman break galaxies (LBGs) at high redshift. The study of the numerous star clusters in the systems is an effective way to investigate the formation and evolution of the starburst phase. In fact, the SED fitting models have revealed a surprisingly young star cluster population, with ages between 0.5 and 40 Myr, and estimated masses between 10^3 and 10^7 solar masses. An independent age estimation has been done with the EW(Halpha) analysis of each cluster. This last analysis has confirmed the young ages of the clusters. We noticed that the clusters with ages between 1 and 10 Myr show a flux excess in H (NIC3/F160W) and/or I (WFPC2/F814W) bands with respect to the evolutionary models. Once more Haro 11 represents a challenge to our understanding.
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