The Apache Point Observatory Catalog of Optical Diffuse Interstellar Bands

doi:10.3847/1538-4357/ab1b74

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	The Apache Point Observatory Catalog of Optical Diffuse Interstellar Bands
	Fan,Haoyu 10,11; Hobbs,L. M.9; Dahlstrom,Julie A.8; Welty,Daniel E.7; York,Donald G.5,6; Rachford,Brian 4; Snow,Theodore P.3; Sonnentrucker,Paule 2; Baskes,Noah 1; Zhao,Gang 10,11
刊名	The Astrophysical Journal
	2019-06-24
卷号	878 期号:2
关键词	dust, extinction ISM: lines and bands ISM: molecules
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab1b74
英文摘要	Abstract Aiming for a new and more comprehensive DIB catalog between 4000 and 9000 ?, we revisited the Atlas Catalog based on the observations of HD 183143 and HD 204827. Twenty-five medium to highly reddened sight lines were selected, sampling a variety of spectral types of the background star and the interstellar environments. The median signal-to-noise ratio (S/N) of these spectra is ～1300 around 6400 ?. Compared to the Atlas Catalog, 22 new DIBs were found, and the boundaries of 27 (sets of) DIBs were adjusted, resulting in an updated catalog containing 559 DIBs that we refer to as the Apache Point Observatory Catalog of Optical Diffuse Interstellar Bands. Measurements were then made based on this catalog. We found our survey most sensitive between 5500 and 7000 ?, due largely to the local S/N of the spectra, the relative absence of interfering stellar lines, and the weakness of telluric residuals. For our data sample, the number of DIBs detected in a given sight line is mostly dependent on EB?V and less on the spectral type of the background star. Some dependence on the molecular fraction fH2 is observed, but it is less well determined owing to the limited size of the data sample. The variations of the wavelengths of each DIB in different sight lines are generally larger than those of the known interstellar lines CH+, CH, and K i. Those variations could be due to the inherent error in the measurement, or to differences in the velocity components among sight lines.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-878-2-AB1B74
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/28916]
专题	中国科学院国家天文台
作者单位	1.Department of Astronomy and Astrophysics, University of Chicago, 5640 S. Ellis Avenue, ERC 577, Chicago, IL 60615, USA 2.Space Telescope Science Institute, European Space Agency, 3700 San Martin Drive, Baltimore, MD 21218, USA 3.University of Colorado, 2000 Colorado Ave., Duane Physics Building, Rm. E226, Boulder, CO 80309, USA 4.Embry-Riddle Aeronautical University, 3700 Willow Creek Road, Prescott, AZ 86303, USA 5.The Enrico Fermi Institute, University of Chicago, Chicago, IL, USA; don@astro.uchicago.edu 6.Department of Astronomy and Astrophysics, The University of Chicago, 5640 S. Ellis Avenue, ERC 577, Chicago, IL 60615, USA 7.Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA 8.Department of Physics and Astronomy, Carthage College, 2001 Alford Park Drive, Straz Center 94, Kenosha, WI 53140, USA 9.Department of Astronomy and Astrophysics, The University of Chicago, 5640 S. Ellis Avenue, ERC 599, Chicago, IL 60615, USA 10.University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China
推荐引用方式 GB/T 7714	Fan,Haoyu,Hobbs,L. M.,Dahlstrom,Julie A.,et al. The Apache Point Observatory Catalog of Optical Diffuse Interstellar Bands[J]. The Astrophysical Journal,2019,878(2).
APA	Fan,Haoyu.,Hobbs,L. M..,Dahlstrom,Julie A..,Welty,Daniel E..,York,Donald G..,...&Zhao,Gang.(2019).The Apache Point Observatory Catalog of Optical Diffuse Interstellar Bands.The Astrophysical Journal,878(2).
MLA	Fan,Haoyu,et al."The Apache Point Observatory Catalog of Optical Diffuse Interstellar Bands".The Astrophysical Journal 878.2(2019).