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THE DATA REDUCTION PIPELINE for the SDSS-IV MaNGA IFU GALAXY SURVEY

  • Author(s): Law, DR
  • Cherinka, B
  • Yan, R
  • Andrews, BH
  • Bershady, MA
  • Bizyaev, D
  • Blanc, GA
  • Blanton, MR
  • Bolton, AS
  • Brownstein, JR
  • Bundy, K
  • Chen, Y
  • Drory, N
  • D'Souza, R
  • Fu, H
  • Jones, A
  • Kauffmann, G
  • MacDonald, N
  • Masters, KL
  • Newman, JA
  • Parejko, JK
  • Sánchez-Gallego, JR
  • Sánchez, SF
  • Schlegel, DJ
  • Thomas, D
  • Wake, DA
  • Weijmans, AM
  • Westfall, KB
  • Zhang, K
  • et al.

Published Web Location

https://arxiv.org/abs/1607.08619
No data is associated with this publication.
Abstract

© 2016. The American Astronomical Society. All rights reserved.. Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) is an optical fiber-bundle integral-field unit (IFU) spectroscopic survey that is one of three core programs in the fourth-generation Sloan Digital Sky Survey (SDSS-IV). With a spectral coverage of 3622-10354 A and an average footprint of ∼500 arcsec2 per IFU the scientific data products derived from MaNGA will permit exploration of the internal structure of a statistically large sample of 10,000 low-redshift galaxies in unprecedented detail. Comprising 174 individually pluggable science and calibration IFUs with a near-constant data stream, MaNGA is expected to obtain ∼100 million raw-frame spectra and ∼10 million reduced galaxy spectra over the six-year lifetime of the survey. In this contribution, we describe the MaNGA Data Reduction Pipeline algorithms and centralized metadata framework that produce sky-subtracted spectrophotometrically calibrated spectra and rectified three-dimensional data cubes that combine individual dithered observations. For the 1390 galaxy data cubes released in Summer 2016 as part of SDSS-IV Data Release 13, we demonstrate that the MaNGA data have nearly Poisson-limited sky subtraction shortward of ∼8500 A and reach a typical 10σ limiting continuum surface brightness μ = 23.5 AB arcsec-2 in a five-arcsecond-diameter aperture in the g-band. The wavelength calibration of the MaNGA data is accurate to 5 km s-1 rms, with a median spatial resolution of 2.54 arcsec FWHM (1.8 kpc at the median redshift of 0.037) and a median spectral resolution of σ = 72 km s-1.

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