SDSS-IV MaNGA Morphological Catalogues Virtual Observatory Resource

Authors
  1. Fischer J.-L.
  2. Dominguez Sanchez H.
  3. Bernardi M.
  4. Published by
    CDS
Abstract

We describe the Sloan Digital Sky Survey IV (SDSS-IV) MaNGA (Mapping Nearby Galaxies at Apache Point Observatory) PyMorph Photometric (MPP-VAC) and MaNGA Deep Learning Morphology (MDLM-VAC) Value Added Catalogues. The MPP-VAC provides photometric parameters from Sersic and Sersic+Exponential fits to the 2D surface brightness profiles of the MaNGA Data Release 15 (DR15) galaxy sample. Compared to previous PYMORPH analyses of SDSS imaging, our analysis of the MaNGA DR15 incorporates three improvements: the most recent SDSS images; modified criteria for determining bulge-to-disc decompositions; and the fits in MPP-VAC have been eye-balled, and re-fit if necessary, for additional reliability. A companion catalogue, the MDLM-VAC, provides Deep Learning-based morphological classifications for the same galaxies. The MDLM-VAC includes a number of morphological properties (e.g. a TType, and a finer separation between elliptical and S0 galaxies). Combining the MPP- and MDLM-VACs allows to show that the MDLM morphological classifications are more reliable than previous work. It also shows that single-Sersic fits to late- and early-type galaxies are likely to return Sersic indices of n=<2 and >=4, respectively, and this correlation between n and morphology extends to the bulge component as well. While the former is well known, the latter contradicts some recent work suggesting little correlation between n-bulge and morphology. Combining both VACs with MaNGA's spatially resolved spectroscopy allows us to study how the stellar angular momentum depends on morphological type. We find correlations between stellar kinematics, photometric properties, and morphological type even though the spectroscopic data played no role in the construction of the MPP- and MDLM-VACs.

Keywords
  1. galaxies
  2. photometry
  3. catalogs
Bibliographic source Bibcode
2019MNRAS.483.2057F
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/483/2057
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/483/2057
Document Object Identifer DOI
doi:10.26093/cds/vizier.74832057

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https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/483/2057
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/483/2057
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/483/2057
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https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/483/2057/table1a?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/483/2057/table1a?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/483/2057/table1a?
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https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/483/2057/table1b?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/483/2057/table1b?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/483/2057/table1b?
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https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/483/2057/table1c?
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https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/483/2057/table1d?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/483/2057/table1d?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/483/2057/table1d?
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For use with a cone search client (e.g., TOPCAT).
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History

2022-08-18T10:37:46Z
Resource record created
2022-08-18T10:37:46Z
Created
2024-08-19T20:15:42Z
Updated

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