SMASH - Survey of the MAgellanic Stellar History
David L. Nidever, Knut Olsen, Alistair R. Walker, A. Katherina Vivas,, Robert D. Blum, Catherine Kaleida, Yumi Choi, Blair C. Conn, Robert A., Gruendl, Eric F. Bell, Gurtina Besla, Ricardo R. Munoz, Carme Gallart,, Nicolas F. Martin, Edward W. Olszewski, Abhijit Saha

TL;DR
SMASH is a comprehensive survey of the Magellanic Clouds using DECam, providing detailed imaging data to study their stellar populations, formation history, and associated structures, with the first public data release now available.
Contribution
This paper presents the first data release of SMASH, a large-scale survey of the Magellanic Clouds, including data reduction methods, calibration, and initial scientific discoveries.
Findings
Discovered the Hydra II Milky Way satellite.
Identified an old globular cluster likely associated with the LMC.
Detected extended stellar populations around the LMC up to 18.4 kpc.
Abstract
The Large and Small Magellanic Clouds (LMC and SMC) are unique local laboratories for studying the formation and evolution of small galaxies in exquisite detail. The Survey of the MAgellanic Stellar History (SMASH) is an NOAO community DECam survey of the Clouds mapping 480 square degrees (distributed over ~2400 square degrees at ~20% filling factor) to ~24th mag in ugriz with the goal of identifying broadly distributed, low surface brightness stellar populations associated with the stellar halos and tidal debris of the Clouds. SMASH will also derive spatially-resolved star formation histories covering all ages out to large radii from the MCs that will further complement our understanding of their formation. Here, we present a summary of the survey, its data reduction, and a description of the first public Data Release (DR1). The SMASH DECam data have been reduced with a combination of…
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