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

Abstract

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.

6 pages, 5 figures, to appear in Proceedings of the IAU Symposium No. 298 "Setting the Scene for Gaia and LAMOST"

References in corpus (4)

• The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey
• Empirical extinction coefficients for the GALEX, SDSS, 2MASS and WISE passbands
• A Catalog of Diffuse Interstellar Bands in the Spectrum of HD 204827
• Studies of the Diffuse Interstellar Bands. III. HD 183143

Cited by in corpus (1)

• Three-dimensional structure of the milky way dust: modeling of LAMOST data