Schema Browser

TABLE zooSpec

Morphological classifications of spectroscopic galaxies from Galaxy Zoo

This information is identical to that in Galaxy Zoo 1 Table 2. This table includes galaxies with spectra in SDSS Data Release 7. The fraction of the vote in each of the six categories is given, along with debiased votes in elliptical and spiral categories and flags identifying systems as classified as spiral, elliptical or uncertain. The project is described in Lintott et al., 2008, MNRAS, 389, 1179 and the data release is described in Lintott et al. 2010. Anyone making use of the data should cite at least one of these papers in any resulting publications.

name	type	length	unit	ucd	description
specobjid	numeric	13			match to DR8 spectrum object
objid	bigint	8			DR8 ObjID
dr7objid	bigint	8			DR7 ObjID
ra	real	4			Right Ascension, J2000 deg
dec	real	4			Declination, J2000 deg
rastring	varchar	11			Right ascension in sexagesimal
decstring	varchar	11			Declination in sexagesimal
nvote	int	4			number of votes
p_el	float	8			fraction of votes for elliptical
p_cw	float	8			fraction of votes for clockwise spiral
p_acw	float	8			fraction of votes for anticlockwise spiral
p_edge	float	8			fraction of votes for edge-on disk
p_dk	float	8			fraction of votes for don't know
p_mg	float	8			fraction of votes for merger
p_cs	float	8			fraction of votes for combined spiral - cw + acw + edge-on
p_el_debiased	float	8			debiased fraction of votes for elliptical
p_cs_debiased	float	8			debiased fraction of votes for combined spiral
spiral	int	4			flag for combined spiral - 1 if debiased spiral fraction > 0.8, 0 otherwise
elliptical	int	4			flag for elliptical - 1 if debiased elliptical fraction > 0.8, 0 otherwise
uncertain	int	4			flag for uncertain type - 1 if both spiral and elliptical flags are 0