Value Added Catalogs

In addition to the primary SDSS photometry and spectroscopy, there are a few extra catalogs created by our collaborators that are distributed through the SAS. These Value-Added Catalogs (VACs) are listed below, and include catalogs that were released in earlier data releases.

PawlikMorph catalog of galaxy morphologies

Scientific Analysis Catalog

Catalog of morpologies for MaNGA galaxies determined by PawlikMorph

Vivienne Wild, Yanmei Chen, Milena Pawlik

Catalog Data

This dataset appears in DR15 SkyServer and CasJobs in the following tables:This dataset's catalog data can be joined to the following tables:


This table provides the CAS, gini, M20, shape asymmetry, curve of growth radii, sersic fits and associated parameters measured from SDSS DR7 imaging using the 8-connected structure detection algorithm to define the edges of the galaxies presented in here. The current version of the code does not mask stars prior to creating the 8-connected binary mask, therefore stars within the extended light of the galaxies cause incorrect measurements. More than 10% of objects have been inspected by eye using Marvin and SkyServer, and the WARNINGFLAG set where a star is detected either in the MaNGA datacube, or in the SDSS imaging. In particular, all otherwise clean objects with M20 > -1 or As > 0.3 or (apixx-71)^2+(apixy-71)^2 > 150 have been visually inspected. Users should only use measurements where WARNINGFLAG=0, and additionally visually inspect outliers to ensure that any sample is clean before doing science. We hope to improve the code for future releases. The WARNINGFLAG bits are: (0) failure internal to code; (1) catastrophic error not causing failure of code (e.g. imgsize=0 or rmax=0); (2) problem defining position of minimum asymmetry which indicates further problems with other measurements; (3) sample of outliers with reff = 1 and As > 0.3; (4) particularly large mask with rmax > 90; (5) visually identified failure. We recommend not using any measurement where any of the warning flags are set. Absent measurements are additionally indicated by values of -99.

Catalog last modified: 2021-12-06 07:36:54

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