NAOC Open IR
The Apache Point Observatory Catalog of Optical Diffuse Interstellar Bands
Fan,Haoyu1,2; Hobbs,L. M.3; Dahlstrom,Julie A.4; Welty,Daniel E.5; York,Donald G.6,7; Rachford,Brian8; Snow,Theodore P.9; Sonnentrucker,Paule10; Baskes,Noah11; Zhao,Gang1,2
2019-06-24
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume878Issue:2
AbstractAbstract 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.
Keyworddust, extinction ISM: lines and bands ISM: molecules
DOI10.3847/1538-4357/ab1b74
Language英语
WOS IDIOP:0004-637X-878-2-ab1b74
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/28917
Collection中国科学院国家天文台
Affiliation1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Datun Road 20A, Beijing, 100012, People’s Republic of China; hyfan@bao.ac.cn, gzhao@nao.cas.cn
2.University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China
3.Department of Astronomy and Astrophysics, The University of Chicago, 5640 S. Ellis Avenue, ERC 599, Chicago, IL 60615, USA
4.Department of Physics and Astronomy, Carthage College, 2001 Alford Park Drive, Straz Center 94, Kenosha, WI 53140, USA
5.Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
6.Department of Astronomy and Astrophysics, The University of Chicago, 5640 S. Ellis Avenue, ERC 577, Chicago, IL 60615, USA
7.The Enrico Fermi Institute, University of Chicago, Chicago, IL, USA; don@astro.uchicago.edu
8.Embry-Riddle Aeronautical University, 3700 Willow Creek Road, Prescott, AZ 86303, USA
9.University of Colorado, 2000 Colorado Ave., Duane Physics Building, Rm. E226, Boulder, CO 80309, USA
10.Space Telescope Science Institute, European Space Agency, 3700 San Martin Drive, Baltimore, MD 21218, USA
11.Department of Astronomy and Astrophysics, University of Chicago, 5640 S. Ellis Avenue, ERC 577, Chicago, IL 60615, USA
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
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).
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