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arXiv 1602.01336astro-ph.SRastro-ph.GA
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银河系O星光谱巡天(GOSSS)。III。142个附加O型系统

The Galactic O-Star Spectroscopic Survey (GOSSS). III. 142 additional O-type systems

J. Maíz Apellániz, A. Sota, J. I. Arias, R. H. Barbá, N. R. Walborn, S. Simón-Díaz, I. Negueruela, A. Marco, J. R. S. Leão, A. Herrero, R. C. Gamen, E. J. Alfaro

摘要:

这是GOSSS的第三部分,GOSSS是银河系O星的大规模光谱调查,基于从银河系O星目录(GOSC)中选择的新的均匀,高信噪比,R~2500数字观测。在本文中,我们提出了142个额外的恒星系统与O型恒星从两个半球,使总的O型系统内公布的项目,以590。在这些新天体中,有20颗新的O型星。我们还发现了11颗新的双线分光双星(SB 2),其中6颗为O+O型,5颗为O+B型,另外还发现了一颗新的三线分光双星(SB 3),其类型为O+O+B型。我们还修订了一些以前的GOSSS分类,提出了一些过去错误地被分类为O型的恒星的惊人例子,介绍了在光谱类型O 4-O5.5处使用光度IV类,并使分类方案适应Arias等人的工作。

英文摘要:

This is the third installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R~2500 digital observations selected from the Galactic O-Star Catalog (GOSC). In this paper we present 142 additional stellar systems with O stars from both hemispheres, bringing the total of O-type systems published within the project to 590. Among the new objects there are 20 new O stars. We also identify 11 new double-lined spectroscopic binaries (SB2s), of which 6 are of O+O type and 5 of O+B type, and an additional new tripled-lined spectroscopic binary (SB3) of O+O+B type. We also revise some of the previous GOSSS classifications, present some egregious examples of stars erroneously classified as O-type in the past, introduce the use of luminosity class IV at spectral types O4-O5.5, and adapt the classification scheme to the work of Arias et al. (2016).

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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