首页> 外文期刊>The Astrophysical journal >KRONBERGER?49: A NEW LOW-MASS GLOBULAR CLUSTER OR AN UNPRECEDENTED BULGE WINDOW?*
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KRONBERGER?49: A NEW LOW-MASS GLOBULAR CLUSTER OR AN UNPRECEDENTED BULGE WINDOW?*

机译:KRONBERGER?49:新型的低质量球状集群或无法预料的凸起窗口?*

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We employ optical and near-infrared photometry to study the stars in the direction of the star cluster candidate Kronberger?49. The optical color-magnitude diagrams (V, I, and Gunn z photometry obtained with the Galileo Telescope) are tight and present evidence of a main-sequence turnoff. We may be dealing with a low-mass, metal-rich globular cluster located in the bulge at a distance from the Sun of d ☉ = 8 ± 1?kpc. Alternatively, it may be a dust hole through which we are sampling the bulge stellar population affected by a very low amount of differential reddening.
机译:我们采用光学和近红外光度法,以星团候选Kronberger?49的方向研究恒星。光学色度图(用伽利略望远镜获得的V,I和Gunn z光度法)很紧密,显示了主序列关闭的迹象。我们可能要处理的是一个低质量,富含金属的球状星团,该球星团位于凸起处,距离d = 8±1?kpc的太阳。或者,它可能是一个尘孔,通过该孔我们可以采样受极少量微变红影响的膨胀恒星种群。

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