The Optical to Mid-infrared Extinction Law Based on the APOGEE, Gaia DR2, Pan-STARRS1, SDSS, APASS, 2MASS, and WISE Surveys

doi:10.3847/1538-4357/ab1c61

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	The Optical to Mid-infrared Extinction Law Based on the APOGEE, Gaia DR2, Pan-STARRS1, SDSS, APASS, 2MASS, and WISE Surveys
	Wang,Shu 1,2; Chen,Xiaodian 1
刊名	The Astrophysical Journal
	2019-06-03
卷号	877 期号:2
关键词	dust, extinction infrared: ISM
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab1c61
英文摘要	Abstract A precise interstellar dust extinction law is critically important to interpret observations. There are two indicators of extinction: the color excess ratio (CER) and the relative extinction. Compared to the CER, the wavelength-dependent relative extinction is more challenging to be determined. In this work, we combine spectroscopic, astrometric, and photometric data to derive high-precision CERs and relative extinction from optical to mid-infrared (IR) bands. A group of 61,111 red clump (RC) stars are selected as tracers by stellar parameters from the Apache Point Observatory Galaxy Evolution Experiment survey. The multiband photometric data are collected from Gaia, APASS, Sloan Digital Sky Survey, Pan-STARRS1, Two Micron All Sky Survey, and Wide-field Infrared Survey Explorer surveys. For the first time, we calibrate the curvature of CERs in determining CERs E(λ???GRP)/E(GBP???GRP) from color excess–color excess diagrams. Through elaborate uncertainty analysis, we conclude that the precision of our CERs is significantly improved (σ?
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-877-2-AB1C61
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/26460]
专题	中国科学院国家天文台
作者单位	1.Key Laboratory for Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China shuwang@pku.edu.cn 2.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People’s Republic of China; chenxiaodian@nao.cas.cn
推荐引用方式 GB/T 7714	Wang,Shu,Chen,Xiaodian. The Optical to Mid-infrared Extinction Law Based on the APOGEE, Gaia DR2, Pan-STARRS1, SDSS, APASS, 2MASS, and WISE Surveys[J]. The Astrophysical Journal,2019,877(2).
APA	Wang,Shu,&Chen,Xiaodian.(2019).The Optical to Mid-infrared Extinction Law Based on the APOGEE, Gaia DR2, Pan-STARRS1, SDSS, APASS, 2MASS, and WISE Surveys.The Astrophysical Journal,877(2).
MLA	Wang,Shu,et al."The Optical to Mid-infrared Extinction Law Based on the APOGEE, Gaia DR2, Pan-STARRS1, SDSS, APASS, 2MASS, and WISE Surveys".The Astrophysical Journal 877.2(2019).