NOAO >   Observing Info >   Approved Programs >   2018A-0251

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Program Information for 2018A-0251


PI: Douglas P Finkbeiner, Harvard-Smithsonian Center for Astrophysics, dfinkbeiner@cfa.harvard.edu
Address: Astronomy Department, 60 Garden Street MS-51, Cambridge, MA 02138 USA

CoI: Edward F Schlafly, Lawrence Berkeley National Laboratory
CoI: Gregory Green, Stanford U.
CoI: Aaron Meisner, UC Berkeley
CoI: Catherine Zucker, Harvard-Smithsonian Center for Astrophysics

Title: Mapping Dust in 3D with DECam: A Galactic Plane Survey

Abstract: We propose to survey the southern Galactic plane to determine the three-dimensional distribution of stars, gas, and especially dust in the Milky Way. Our work with Pan-STARRS1 demonstrates that $grizY$ photometry enables accurate 3D dust maps in the Galactic plane. With 22 nights awarded in past cycles, we have already mapped the southern Galactic plane to $|b|<4^circ$. These runs have proven very successful and the photometric catalog for two billion stars in the southern Galactic plane is already available online. With an additional 24 nights we will be able to fill out the footprint to $|b|<10^circ$, thereby covering the rest of the Southern sky not covered in ongoing surveys like BLISS, DES, DECaLS, and DeROSITA. Complemented by Pan- STARRS1 data in the North, we would have for the first time deep optical coverage of the entire Galactic plane, and eventually, the entire sky. This will provide an important legacy data set for studies of Galactic structure and stellar populations and enable the creation of a 3D dust map over pi$ steradians.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2018A):  CT-4m/DECam -- 4n on Feb 02 - Feb 03 2018, Feb 25 - Feb 27 2018
Run 2 (2018A):  CT-4m/DECam -- 5n on May 08 - May 11 2018, May 18 - May 20 2018


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NOAO >   Observing Info >   Approved Programs >   2018A-0251

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