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A Carbon Star Survey of the Local Group Dwarf Galaxies. I. IC 1613

机译:地方矮星系的碳星调查。 I.集成电路1613

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We present results of a multifilter survey of the whole Magellanic-type galaxy IC 1613. Narrowband CN and TiO filters are used to identify carbon stars among red giants. We have identified 195 carbon stars, extending up to 15' from the center of the galaxy. We present well-calibrated R and I magnitudes for all stars. The large field surveyed allows a reliable foreground estimate of M stars, leading to a C/M ratio of 0.64, when giants as early as M0 are counted. Analysis of the photometric properties of the C star population reveals a narrow MI distribution with a mean MI of -4.69, with a dispersion of ±0.28. IC 1613 has, for its absolute magnitude, a normal number of C stars.
机译:我们介绍了整个麦哲伦星系IC 1613的多滤镜调查结果。窄带CN和TiO滤镜用于识别红色巨人中的碳星。我们确定了195个碳星,从星系中心延伸到15'。我们为所有恒星提供经过良好校准的R和I量级。所调查的大视野可以对M星进行可靠的前景估计,当计算早于M0的巨星时,其C / M比为0.64。对C星总体的光度特性的分析显示,MI分布较窄,平均MI为-4.69,色散为±0.28。就其绝对大小而言,IC 1613具有正常数量的C星。

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