NOAO >   Observing Info >   Approved Programs >   2013B-0440

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Program Information for 2013B-0440


PI: David Nidever, U. of Michigan, dnidever@umich.edu
Address: Astronomy Department, 500 Church St., Ann Arbor, MI 48109-1042 USA

CoI: Knut Olsen, NOAO
CoI: Gurtina Besla, Columbia U.
CoI: Robert A Gruendl, U. of Illinois Urbana-Champaign
CoI: Abhijit Saha, NOAO
CoI: Carme Gallart, Instituto de Astrofisica de Canarias
CoI: Edward W Olszewski, U. of Arizona
CoI: Ricardo Munoz, Universidad de Chile
CoI: Matteo Monelli, Instituto de Astrofisica de Canarias
CoI: Andrea Kunder, CTIO
CoI: Catherine C Kaleida, Arizona State U.
CoI: Alistair Walker, CTIO
CoI: Guy S Stringfellow, U. of Colorado
CoI: Dennis Zaritsky, U. of Arizona
CoI: Roeland P van der Marel, STScI
CoI: Robert Blum, NOAO
CoI: Kathy Vivas, Centro de Investigacion de Astronomia
CoI: You-Hua Chu, U. of Illinois Urbana-Champaign
CoI: Nicolas Martin, Max Planck Institut fur Astrophysik
CoI: Blair Conn, Max Planck Institut fur Astrophysik
CoI: Noelia Noel, Max Planck Institut fur Astrophysik
CoI: Steven R Majewski, U. of Virginia
CoI: Shoko Jin, University of Groningen
CoI: Hwihyun Kim, Arizona State U.
CoI: Maria-Rosa Cioni, University of Hertfordshire
CoI: Eric F Bell, U. of Michigan
CoI: Antonela Monachesi, U. of Michigan
CoI: Thomas De Boer, Kapteyn Astronomical Institute

Title: Survey of the MAgellanic Stellar History - SMASH

Abstract: Over the last several years, various discoveries have drastically altered our view of the iconic Magellanic Clouds (MCs), the nearest interacting galaxy system. The best evidence is now that they are on first infall into the Milky Way, that their stellar populations extend {\em much} further than previously thought, and that they suffered a close collision that tore out both the well-known Magellanic Stream and a large amount of still undetected stellar debris. Here we propose a community DECam survey of the Clouds mapping 480 deg$^2$ (distributed over $\sim00 deg$^2$ at $\sim\% filling factor) to $\simth mag $griz$ (and $u$$\sim) that will supplement the 5000 deg$^2$ Dark Energy Survey's partial coverage of the Magellanic periphery, allowing us to map the expected stellar debris and extended populations with unprecedented fidelity. We have already conducted a pilot project demonstrating that DECam will allow us to: (1) Map the stellar periphery of the MCs with old main-sequence turnoff stars to a surface brightness limit of $\sim mag/arcsec$^2$, revealing relics of their formation and past interactions. (2) Identify the stellar component of the Magellanic Stream and Leading Arm for the first time, if they exist, making them the only Galactic halo tracers with both gaseous and stellar components. (3) Derive spatially-resolved star formation histories covering all ages out to large radii of the MCs that will further complement our understanding of their formation. The combination of this survey and DES data will allow us to uncover a multitude of stellar structure that will unveil the complex and dramatic history of these two dwarf galaxies, while enabling a broad spectrum of community-led projects.

Program Type: Survey

Scheduled Nights:
Run 1 (2013B):  CT-4m/DECam -- 5n on Jan 05 - Jan 07 2014, Jan 19 - Jan 20 2014, Jan 29 - Jan 30 2014
Run 1 (2014A):  CT-4m/DECam -- 7n on May 27 - Jun 02 2014
Run 1 (2014B):  CT-4m/DECam -- 5n on Nov 21 - Nov 23 2014, Dec 17 - Dec 18 2014
Run 1 (2015A):  CT-4m/DECam -- 7n on Mar 13 - Mar 18 2015, Mar 30 - Mar 31 2015
Run 1 (2015B):  CT-4m/DECam -- 9n on Oct 25 2015, Oct 27 2015, Nov 09 2015, Nov 23 2015, Dec 05 - Dec 06 2015, Jan 01 - Jan 06 2016
Run 1 (2016A):  CT-4m/DECam -- 9.5n on Feb 13 - Feb 18 2016, May 08 - May 12 2016
Run 1 (2016B):  CT-4m/DECam -- 3n on Oct 29 - Oct 31 2016
Run 1 (2017A):  CT-4m/DECam -- 1n on Mar 08 - Mar 09 2017
Run 1 (2017B):  CT-4m/DECam -- 1n on Aug 03 - Aug 04 2017
Run 2 (2013B):  CT-0.9m/CFIM -- 4n on Sep 07 - Sep 10 2013
Run 2 (2014A):  CT-0.9m/CFIM -- 10n on Feb 14 - Feb 23 2014
Run 2 (2014B):  CT-0.9m/CFIM -- 7n on Sep 25 - Oct 01 2014
Run 2 (2015A):  CT-0.9m/CFIM -- 7n on Apr 26 - May 02 2015


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