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arXiv 0905.2369astro-ph.SR
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耶拿大学天文台OB星团NGC 1502和NGC 2169的测光研究及其成员的质量估算

Photometric study of the OB star clusters NGC 1502 and NGC 2169 and mass estimation of their members at the University Observatory Jena

M. M. Hohle, T. Eisenbeiss, M. Mugrauer, F. Freistetter, M. Moualla, R. Neuhäuser, S. Rätz, T. O. B. Schmidt, N. Tetzlaff, M. Vaňko

摘要:

在这项工作中,我们提出了详细的光度测量结果的类似银河系附近的OB集群NGC 1502和NGC 2169在耶拿大学天文台进行。我们确定了绝对$BVRI$星等的主要解决组件使用Landolt标准星。这种多色测光使我们能够估计光谱类型和吸收以及组件的质量,这是目前为止,在文献中的大多数集群成员,使用恒星演化模型。此外,我们还研究了NGC 1502中六元系统的组分ADS 2984 A和SZ Cam的光谱。我们的光谱清楚地证实了这些成分的多样性,这是耶拿大学天文台首次进行此类调查。

英文摘要:

In this work we present detailed photometric results of the trapezium like galactic nearby OB clusters NGC 1502 and NGC 2169 carried out at the University Observatory Jena. We determined absolute $BVRI$ magnitudes of the mostly resolved components using Landolt standard stars. This multi colour photometry enables us to estimate spectral type and absorption as well as the masses of the components, which were not available for most of the cluster members in the literature so far, using models of stellar evolution. Furthermore, we investigated the optical spectrum of the components ADS 2984A and SZ Cam of the sextuple system in NGC 1502. Our spectra clearly confirm the multiplicity of these components, which is the first investigation of this kind at the University Observatory Jena.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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