A new survey of cool supergiants in the Magellanic Clouds
A new survey of cool supergiants in the Magellanic Clouds
复制标题
对麦哲伦云中冷超巨星的新调查
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
U. Alicante
中科院分区：
文献类型：
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作者：
C. Gonz'alez;R. Dorda;I. Negueruela;A. M. I. O. Astronomy;U. Cambridge;Dfists;U. Alicante
在这项研究中，我们针对麦哲伦星云的红超巨星群体进行了一项试点计划。我们打算将当前已知的样本扩展到这些恒星亮度分布的未探索的低端，建立一个更具代表性的数据集，用该数据集将它们的行为外推到其他银河系和银河系外环境。我们仅使用近红外光度测量来选择候选对象，并使用中等分辨率多目标光谱，进行光谱分类并得出它们的视线速度，从而确认候选对象的性质及其对云的隶属关系。已检测到大约 200 个新的 RSG，暗示还有大量尚未观测到的 RSG。使用近红外和中红外光度测量，我们研究了这些恒星的亮度分布、质量损失的开始以及大气中尘埃的影响。基于该样本，研究了新的先验分类标准，结合中红外光度测量和近红外光度测量，以提高类似程序的观测效率。
In this study, we conduct a pilot program aimed at the red supergiant population of the Magellanic Clouds. We intend to extend the current known sample to the unexplored low end of the brightness distribution of these stars, building a more representative dataset with which to extrapolate their behaviour to other Galactic and extra-galactic environments. We select candidates using only near infrared photometry, and with medium resolution multi-object spectroscopy, we perform spectral classification and derive their line-of-sight velocities, confirming the nature of the candidates and their membership to the clouds. Around two hundred new RSGs have been detected, hinting at a yet to be observed large population. Using near and mid infrared photometry we study the brightness distribution of these stars, the onset of mass-loss and the effect of dust in their atmospheres. Based on this sample, new a priori classification criteria are investigated, combining mid and near infrared photometry to improve the observational efficiency of similar programs as this.
DOI：
10.1088/0004-6256/142/4/103
发表时间：
2011-06
期刊：
The Astronomical Journal
影响因子：
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作者：
M. Boyer;S. Srinivasan;J. V. Loon;I. McDonald;M. Meixner;D. Zaritsky;K. Gordon;F. Kemper;F. Kemper;B. Babler;M. Block;S. Bracker;C. Engelbracht;J. Hora;R. Indebetouw;M. Meade;K. Misselt;T. Robitaille;M. Sewiło;B. Shiao;B. Whitney;B. Whitney
通讯作者：
M. Boyer;S. Srinivasan;J. V. Loon;I. McDonald;M. Meixner;D. Zaritsky;K. Gordon;F. Kemper;F. Kemper;B. Babler;M. Block;S. Bracker;C. Engelbracht;J. Hora;R. Indebetouw;M. Meade;K. Misselt;T. Robitaille;M. Sewiło;B. Shiao;B. Whitney;B. Whitney