High-mass-loss AGB Stars in the South Galactic Cap
High-mass-loss AGB Stars in the South Galactic Cap
复制标题
南银河帽中的高质量损失 AGB 恒星
DOI：
10.1093/mnras/267.3.711
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发表时间：
1994
影响因子：
4.8
通讯作者：
J. Chapman
中科院分区：
文献类型：
--
作者：
P. Whitelock;J. Menzies;M. Feast;F. Marang;B. Carter;G. Roberts;R. Catchpole;J. Chapman
本文介绍了对南银帽（B<−30°）中61个Miras的观测结果，这些Miras是根据其IRAS 12/25 μm通量比作为高质量损失候选者而选定的。获得了所有恒星的JHKL测光（超过1500次观测），49颗恒星的光谱和4颗恒星的OH脉泽探测。其中58颗米拉星富含氧气，3颗是具有厚壳的碳星。所有未知的恒星的周期都被确定了，它们的范围从166到700 d。碳Mira IZ Peg（AFGL 3099）显示了两个周期，分别为488和345 d。所有61颗恒星的距离和质量损失率都已确定
Observations are presented for 61 Miras in the South Galactic Cap (b<−30°) which were selected on the basis of their IRAS 12/25-μm flux ratios as high-mass-loss candidates. JHKL photometry (over 1 500 observations) was obtained for all of the stars, optical spectra for 49 and OH-maser detections for four. 58 of the Miras are oxygen-rich, and three are carbon stars with thick shells. Periods have been determined for all of the stars for which they were not already known - they range from 166 to 700 d. The carbon Mira IZ Peg (AFGL 3099) shows two periods, of 488 and 345 d, respectively. Distances and mass-loss rates have been determined for all 61 stars