Red and infrared colours of B stars and the reddening law in the Galaxy
Red and infrared colours of B stars and the reddening law in the Galaxy
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B星的红色和红外颜色以及银河系的红化定律
DOI：
10.1093/mnras/287.3.481
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发表时间：
1997
影响因子：
4.8
通讯作者：
H. Winkler
中科院分区：
文献类型：
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作者：
H. Winkler
B 星的红色和红外固有色是通过 UBV(R1)cJHK 和 H,8 滤光片对 257 颗早期型恒星进行的光度观测得出的。那些 UBV 和 H,8 测量值与已发布的光谱类别相匹配且没有显示出其他特殊迹象的恒星，用于确定 B 星在红色和红外光中的固有光度颜色。根据这些固有颜色，可以评估红色和红外颜色的星际红化关系，并将结果与之前对这些量的估计进行比较。然后确定各个恒星的 R、E(B - V) 值和距离。在大多数情况下，R 被证实接近 3.1，但在某些方向上被发现要大得多。研究了 R 与银河系中恒星位置之间的关系。通常，异常变红的恒星似乎与已知的恒星形成区域有关。该论文还确定了七颗可能的变星和一些可能带有尘埃壳的恒星。
The red and infrared intrinsic colours of B stars are derived from photometric observations through the UBV(R1)cJHK and H,8 filters of 257 early-type stars. Those stars for which the UBV and H,8 measurements match the published spectral class, and which show no other signs of peculiarity, are used to determine the intrinsic photometric colours of B stars in the red and infrared. From these intrinsic colours the interstellar reddening relationships for the red and infrared colours are evaluated, and the results are compared with previous estimates of these quantities. The values of R, E(B - V) and the distance are then determined for the individual stars. R is confirmed to be close to 3.1 in most cases, but was found to be much larger in some directions. The relationship between R and the location of a star in the Galaxy is investigated. Usually the abnormally reddened stars seemed to be associated with known regions of star formation. The paper also identifies seven likely variable stars and a number of stars with possible dust shells.