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The 3-D extinction law in the 2nd quadrant of the Galactic disk

Published online by Cambridge University Press:  06 January 2014

Chao Liu ,
Min Fang ,
Yue Wu ,
Kenneth Carrell ,
Xiangxiang Xue  and
Glenn van de Ven
Chao Liu
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China email: liuchao@nao.cas.cn
Min Fang
Affiliation:
Purple Mountain Observatory and Key Laboratory for Radio Astronomy, Chinese Acedamy of Sciences, 2 West Beijing Road, 210008, Nanjing, China
Yue Wu
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China email: liuchao@nao.cas.cn
Kenneth Carrell
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China email: liuchao@nao.cas.cn
Xiangxiang Xue
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China email: liuchao@nao.cas.cn Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany
Glenn van de Ven
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany
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Abstract

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We estimate the 3D extinction law in the optical–NIR bands for a line of sight in the 2nd quadrant of the Galactic disk. Two dust lanes are identified at ~9 and ~10.25 kpc in both AV and RV, indicating that the size of the dust grains in the spiral arms is larger than that in the inter-arm regions.

Keywords

dustextinctionGalaxy: disk
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S298: Setting the scene for Gaia and LAMOST , May 2013 , pp. 423
Copyright
Copyright © International Astronomical Union 2014 

References

Cardelli, J. A., Clayton, G. C., & Mathis, J. S. 1989, ApJ, 345, 245CrossRefGoogle Scholar
Liu, C., Xue, X., Fang, M., van de Ven, G., Wu, Y., Smith, M., & Carrell, K. 2012, ApJL, 753, 24Google Scholar