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Mapping the three-dimensional multi-band extinction and diffuse interstellar bands in the Milky Way with LAMOST

Published online by Cambridge University Press:  06 January 2014

H.-B. Yuan ,
X.-W. Liu ,
M.-S Xiang ,
Z.-Y. Huo ,
H.-H. Zhang ,
Y. Huang  and
H.-W. Zhang
H.-B. Yuan
Affiliation:
Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China email: [email protected]
X.-W. Liu
Affiliation:
Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China email: [email protected] Department of Astronomy, Peking University, Beijing 100871, China
M.-S Xiang
Affiliation:
Department of Astronomy, Peking University, Beijing 100871, China
Z.-Y. Huo
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
H.-H. Zhang
Affiliation:
Department of Astronomy, Peking University, Beijing 100871, China
Y. Huang
Affiliation:
Department of Astronomy, Peking University, Beijing 100871, China
H.-W. Zhang
Affiliation:
Department of Astronomy, Peking University, Beijing 100871, China
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Abstract

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With modern large scale spectroscopic surveys, such as the SDSS and LSS-GAC, Galactic astronomy has entered the era of millions of stellar spectra. Taking advantage of the huge spectroscopic database, we propose to use a “standard pair" technique to a) Estimate multi-band extinction towards sightlines of millions of stars; b) Detect and measure the diffuse interstellar bands in hundreds of thousands SDSS and LAMOST low-resolution spectra; c) Search for extremely faint emission line nebulae in the Galaxy; and d) Perform photometric calibration for wide field imaging surveys. In this contribution, we present some results of applying this technique to the SDSS data, and report preliminary results from the LAMOST data.

Keywords

ISM: dustextinctionISM: lines and bandsplanetary nebulae: generalISM: generalsurveystechniques: spectroscopic
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S298: Setting the scene for Gaia and LAMOST , May 2013 , pp. 240 - 245
Copyright
Copyright © International Astronomical Union 2014 

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