主序星B的详细远紫外光谱图集
A Detailed Far-Ultraviolet Spectral Atlas of Main Sequence B Stars
摘要：
我们制作了主序附近10颗锐边B 0-B 9星的详细光谱图集，覆盖了930 A-1225 A波长区域。我们收集的大部分光谱来自FUSE卫星的档案，但对于9颗恒星，1188 A以上的波长覆盖范围来自高分辨率IUE或中阶梯HST/STIS光谱。为了表示第十颗B0.2 V型恒星，我们使用了Tau Sco的哥白尼图集。我们在区域949 A至1225 A中对所有已公布振子强度为B 0、B2和B8的原子特征进行了广泛的谱线识别。这些地图集是作为补充数据产品提供的，因此称为详细地图集。我们找到的特征列表总共分别为2288、1612和2469行。我们能够识别92%，98%和98%的这些特征与已知的原子跃迁，在这些光谱中具有不同程度的确定性。其余的谱线没有公开的振子强度。光球线占94%，87%和91%，分别为我们所有的识别，其余的是由于星际（通常是分子H2）线。我们还讨论了这三个研究最多的光谱亚型的各种离子的分布线的数量。表中还给出了167个最少的混合线，可以用来作为可能的诊断的物理条件在B星的大气。
英文摘要：
We have constructed a detailed spectral atlas covering the wavelength region 930A to 1225A for 10 sharp-lined B0-B9 stars near the main sequence. Most of the spectra we assembled are from the archives of the FUSE satellite, but for nine stars wavelength coverage above 1188A was taken from high-resolution IUE or echelle HST/STIS spectra. To represent the tenth star at type B0.2 V we used the Copernicus atlas of tau Sco. We made extensive line identifications in the region 949A to 1225A of all atomic features having published oscillator strengths at types B0, B2, and B8. These are provided as a supplementary data product - hence the term detailed atlas. Our list of found features totals 2288, 1612, and 2469 lines, respectively. We were able to identify 92%, 98%, and 98% of these features with known atomic transitions with varying degrees of certainty in these spectra. The remaining lines do not have published oscillator strengths. Photospheric lines account for 94%, 87%, and 91%, respectively, of all our iden- tifications, with the remainder being due to interstellar (usually molecular H2) lines. We also discuss the numbers of lines with respect to the distributions of various ions for these three most studied spectral subtypes. A table is also given of 167 least blended lines that can be used as possible diagnostics of physical conditions in B star atmospheres.
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