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Paper: The MCELS Data Reduction Pipeline and Its Application to PNe Searches in the LMC
Volume: 491, Fifty Years of Wide Field Studies in the Southern Hemisphere: Resolved Stellar Populations in the Galactic Bulge and the Magellanic Clouds
Page: 366
Authors: Paredes, L.; Points, S. D.; Smith, R. C.; Rest, A.; Damke, G.; Zenteno, A.; MCELS Team
Abstract: The Magellanic Cloud Emission-Line Survey (MCELS) obtained observations toward the Large and Small Magellanic Clouds (LMC and SMC, respectively) over six years using the UM/CTIO Curtis Schmidt 0.61m telescope to produce deep images in [O III], H-alpha, and [S II] emission-lines, in addition to adjacent green and red continuum filters. This survey covered the central 8°x8° of the LMC and the central 3.5°x4.5° of the SMC and encompasses most of the gaseous extent of each galaxy with an angular resolution of 5 arcsec or better, allowing us to identify and study interstellar structures on ∼1-1000 pc physical scales. We have modified the SuperMACHO/Essence-w pipeline, developed for Blanco 4m Mosaic II data, to reduce MCELS data in a uniform manner. In addition to basic reductions (e.g., bias-subtraction, flat-fielding, etc), this pipeline uses spatially-varying convolution kernels to match the PSFs of the narrow-band and broad-band images and produce continuum-subtracted images for the narrow-band filters. We use flux measurements of previously identified planetary nebulae (PNe) in the LMC, e.g. Reid & Parker (2010), and photometry obtained by our pipeline to create color-magnitude and color-color diagrams in the MCELS filters to search for new PNe candidates in the LMC.
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