The Second Data Release of the Survey of the MAgellanic Stellar History (SMASH)

Abstract

The Large and Small Magellanic Clouds (LMC and SMC) are the largest satellite galaxies of the Milky Way and close enough to allow for a detailed exploration of their structure and formation history. The Survey of the MAgellanic Stellar History (SMASH) is a community Dark Energy Camera (DECam) survey of the Magellanic Clouds using $\sim$50 nights to sample over $\sim$2400 deg${}^2$ centered on the Clouds at $\sim$20% filling factor (but with contiguous coverage in the central regions) and to depths of $\sim$24th mag in $ugriz$. The primary goals of SMASH are to map out the extended stellar peripheries of the Clouds and uncover their complicated interaction and accretion history as well as to derive spatially-resolved star formation histories of the central regions and create a "movie" of their past star formation. Here we announce the second SMASH public data release (DR2), which contains all 197 fully-calibrated DECam fields including the main body fields in the central regions. The DR2 data are available through the Astro Data Lab hosted by the NSF's National Optical-Infrared Astronomy Research Laboratory. We highlight three science cases that make use of the SMASH DR2 data and will be published in the future: (1) preliminary star formation histories of the LMC; (2) the search for Magellanic star clusters using citizen scientists; and, (3) photometric metallicities of Magellanic Cloud stars using the DECam $u$-band.

18 pages, 9 figures. Accepted for publication in The Astronomical Journal

References in corpus (19)

• The Gaia mission
• The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
• The Milky Way Tomography with SDSS: II. Stellar Metallicity
• Are the Magellanic Clouds on their First Passage about the Milky Way?
• The Origin of the Magellanic Stream and Its Leading Arm
• Hydra II: a faint and compact Milky Way dwarf galaxy found in the Survey of the Magellanic Stellar History
• The Chemical Enrichment History of the Large Magellanic Cloud
• Two Ultra-Faint Milky Way Stellar Systems Discovered in Early Data from the DECam Local Volume Exploration Survey
• PHAT Stellar Cluster Survey. II. Andromeda Project Cluster Catalog
• Outside-in disk evolution in the LMC
• The VMC Survey -- XXXIV. Morphology of Stellar Populations in the Magellanic Clouds
• STEP: The VST survey of the SMC and the Magellanic Bridge. I. Overview and first results
• The Large Magellanic Cloud stellar content with SMASH: I. Assessing the stability of the Magellanic spiral arms
• Chemical Mapping of the Milky Way With The Canada-France Imaging Survey: A Non-parametric Metallicity-Distance Decomposition of the Galaxy
• A search for star clusters in the outskirts of the Large Magellanic Cloud: indication of clusters in the age gap
• The origin of the LMC stellar bar: clues from the SFH of the bar and inner disk
• A novel method to automatically detect and measure the ages of star clusters in nearby galaxies: Application to the Large Magellanic Cloud
• The intrinsic reddening of the Magellanic Clouds as traced by background galaxies -- II. The Small Magellanic Cloud
• The intrinsic reddening of the Magellanic Clouds as traced by background galaxies -- I. The bar and outskirts of the Small Magellanic Cloud

Cited by in corpus (20)

• APOGEE Chemical Abundance Patterns of the Massive Milky Way Satellites
• Proper Motions, Orbits, and Tidal Influences of Milky Way Dwarf Spheroidal Galaxies
• The DECam Local Volume Exploration Survey: Overview and First Data Release
• The synchronised dance of the Magellanic Clouds' star formation history
• The VMC survey -- XLIII. The spatially resolved star formation history across the Large Magellanic Cloud
• Chemical Cartography with APOGEE: Mapping Disk Populations with a Two-Process Model and Residual Abundances
• 3D hydrodynamic simulations for the formation of the Local Group satellite planes
• Mysterious Odd Radio Circle near the Large Magellanic Cloud -- An Intergalactic Supernova Remnant?
• Dust distributions in the Magellanic Clouds
• The Optical to Infrared Extinction Law of Magellanic Clouds Based on Red Supergiant and Classical Cepheid
• Assessing the physical reality of Milky Way open cluster candidates
• The VMC survey -- XLVII. Turbulence-Controlled Hierarchical Star Formation in the Large Magellanic Cloud
• UVIT Study of the MAgellanic Clouds (U-SMAC) II. A Far-UV catalog of the Small Magellanic Cloud: Morphology and Kinematics of young stellar population
• Revisiting newly Large Magellanic Cloud age gap star clusters
• The Magellanic Puzzle: origin of the periphery
• First evidence of a stripped star cluster from the Small Magellanic Cloud
• The VMC survey -- LIII. Data release #7. Complete survey data and data from additional programmes
• Catalog of Integrated-Light Star Cluster Light Curves in TESS
• Revisiting a detached stellar structure in the outer northeastern region of the Small Magellanic Cloud
• The chemical DNA of the Magellanic Clouds VI. Origin and evolution of neutron-capture elements in the SMC