arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1807.03544astro-ph.SRastro-ph.GAstat.AP
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M33的近红外Mira周期-亮度关系

Near-infrared Mira Period-Luminosity Relations in M33

Wenlong Yuan, Lucas M. Macri, Atefeh Javadi, Zhenfeng Lin, Jianhua Z. Huang

摘要:

我们分析了稀疏采样的近红外(JHKs)光变曲线的样本M33中的1781米拉变量候选人,最初发现使用I波段的时间序列观测。我们扩展我们的单波段半参数高斯过程建模的米拉光变曲线的多波段版本,并获得改进的周期测定。我们使用我们以前的结果在LMC候选Miras的近红外特性分类的M33样品的大部分到富氧或富碳的子集。我们推导出富氧Miras的周期-亮度关系,并确定M33的距离模量为24.80 ± 0.06等。

英文摘要:

We analyze sparsely-sampled near-infrared (JHKs) light curves of a sample of 1781 Mira variable candidates in M33, originally discovered using I-band time-series observations. We extend our single-band semi-parametric Gaussian process modeling of Mira light curves to a multi-band version and obtain improved period determinations. We use our previous results on near-infrared properties of candidate Miras in the LMC to classify the majority of the M33 sample into Oxygen- or Carbon-rich subsets. We derive Period-Luminosity relations for O-rich Miras and determine a distance modulus for M33 of 24.80 +- 0.06 mag.

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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