@article{99ed4c02c4fe4e169d9ef7632fe59d5c,
title = "The Dark Energy Camera Magellanic Clouds Emission-line Survey",
abstract = "We have used the Dark Energy Camera (DECam) on the CTIO Blanco 4 m telescope to perform a new emission-line survey of the Large Magellanic Cloud (LMC) using narrowband Hα and [S ii] filters in addition to a continuum band to create pure emission-line images. We refer to this new survey as DeMCELS, to distinguish it from the earlier Magellanic Cloud Emission-line Survey (MCELS). DeMCELS covers ∼54 deg2, encompassing most of the bright optical disk of the LMC. With DECam's pixel size of only 0.″27, our DeMCELS survey provides a seeing-limited improvement of 3-5 times over MCELS and is comparable in depth, with surface brightness limits of 3.3 × 10 − 17 erg cm − 2 s − 1 arcsec − 2 and 2.9 × 10 − 17 erg cm − 2 s − 1 arcsec − 2 in Hα and [S ii], respectively. DeMCELS provides detailed morphological information on nebulae of all scales, from the largest supershells to individual H ii regions and supernova remnants, to bubbles of emission surrounding individual stars, and even to faint structures in the diffuse ionized gas of the LMC. Many complex regions of emission show significant variations in the ratio of [S ii] to Hα—a sign of a mixture of shocks from stellar winds and/or supernovae with photoionization by embedded hot, young stars. We present the details of the observing strategy and data processing for this survey, and show selected results in comparison with previous data. A companion project for the Small Magellanic Cloud is in progress and will be reported separately. We are making these new data available to the community at large via NOIRLab{\textquoteright}s Data Lab site.",
author = "Points, {Sean D.} and Long, {Knox S.} and Blair, {William P.} and Rosa Williams and Chu, {You Hua} and Winkler, {P. Frank} and White, {Richard L.} and Armin Rest and Li, {Chuan Jui} and Francisco Valdes",
note = "This project used data obtained with the Dark Energy Camera (DECam), which was constructed by the Dark Energy Survey (DES) collaboration. Funding for the DES Projects has been provided by the US Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute for Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Funda\u00E7\u00E3o Carlos Chagas Filho de Amparo \u00E0 Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Cient\u00EDfico e Tecnol\u00F3gico and the Minist\u00E9rio da Ci\u00EAncia, Tecnologia e Inova\u00E7\u00E3o, the Deutsche Forschungsgemeinschaft, and the Collaborating Institutions in the Dark Energy Survey. S.D.P. would like to thank Thomas Puzia and Eric Peng for the purchase of the N662 filter and starting this work with their H \u03B1 survey of the LMC. S.D.P. would also like to thank Kyoungsoo Lee and the ODIN survey for permitting us to use the N673 filter in this investigation. W.P.B. acknowledges support from the Johns Hopkins Center for Astronomical Sciences during this work. P.F.W. acknowledges the support of the NSF through grant AST-1714281. Y.H.C. acknowledges the support of the grants NSTC 112-2112-M-001-065 and NSTC 111-2112-M-001-063 from the National Science and Technology Council of Taiwan. R.M.W. would like to acknowledge the contributions of the following Columbus State University undergraduate students for data review and object searches: Kayleen Linge, Devin Janeway, Sharmaine Motin, A\u2019naja Houston, Delta Flowers, Griffin McLeroy, Cory Mitchell, Trinity Smith, Samuel Kimball, and William Morgan.",
year = "2024",
month = oct,
day = "1",
doi = "10.3847/1538-4357/ad6766",
language = "English (US)",
volume = "974",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "American Astronomical Society",
number = "1",
}