J/MNRAS/410/166 Morphological types from Galaxy Zoo 1 (Lintott+, 2011)
Galaxy Zoo 1: data release of morphological classifications for nearly
900 000 galaxies.
Lintott C., Schawinski K., Bamford S., Slosar A., Land K., Thomas D.,
Edmondson E., Masters K., Nichol R.C., Raddick M.J., Szalay A.,
Andreescu D., Murray P., Vandenberg J.
<Mon. Not. R. Astron. Soc., 410, 166-178 (2011)>
=2011MNRAS.410..166L 2011MNRAS.410..166L
ADC_Keywords: Surveys ; Galaxies, photometry ; Photometry, SDSS ; Morphology
Keywords: methods: data analysis - galaxies: elliptical and lenticular, cD -
galaxies: general - galaxies: spiral
Abstract:
Morphology is a powerful indicator of a galaxy's dynamical and
merger history. It is strongly correlated with many physical
parameters, including mass, star formation history and the
distribution of mass. The Galaxy Zoo project collected simple
morphological classifications of nearly 900000 galaxies drawn from
the Sloan Digital Sky Survey, contributed by hundreds of thousands of
volunteers. This large number of classifications allows us to exclude
classifier error, and measure the influence of subtle biases inherent
in morphological classification. This paper presents the data
collected by the project, alongside measures of classification
accuracy and bias. The data are now publicly available and full
catalogues can be downloaded in electronic format from
http://data.galaxyzoo.org .
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 105 667944 Classifications of Main Galaxy Sample (MGS)
galaxies with spectra
table3.dat 87 225268 Classifications of additional galaxies
table4.dat 84 667944 Measures of confidence
table5.dat 134 91303 Classification of mirrored images during bias study
table6.dat 88 91303 Classification of monochrome images during
bias study
table7.dat 103 893212 Combined votes including bias study data
fits/* . 6 FITS version of the tables
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See also:
J/MNRAS/396/818 : Blue early-type galaxies in Galaxy Zoo (Schawinski+ 2009)
J/MNRAS/405/783 : Passive red spirals in Galaxy Zoo (Masters+, 2010)
http://data.galaxyzoo.org : Galaxy Zoo 1 Home Page
Byte-by-byte Description of file: table[23].dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- objID SDSS objID
20- 21 I2 h RAh SDSS right ascension (J2000)
23- 24 I2 min RAm SDSS right ascension (J2000)
26- 30 F5.2 s RAs SDSS right ascension (J2000)
32 A1 --- DE- SDSS declination (J2000)
33- 34 I2 deg DEd SDSS declination (J2000)
36- 37 I2 arcmin DEm SDSS declination (J2000)
39- 42 F4.1 arcsec DEs SDSS declination (J2000)
44- 45 I2 --- N Total number of votes for each object
47- 51 F5.3 --- pE Fraction of votes for Elliptical category
53- 57 F5.3 --- pcS Fraction of votes for ClockWise spiral
59- 63 F5.3 --- paS Fraction of votes for AntiClockWise spiral
65- 69 F5.3 --- pEdg Fraction of votes for Edge-on spirals
71- 75 F5.3 --- pDK Fraction of votes for Don't Know
77- 81 F5.3 --- pMg Fraction of votes for Merger
83- 87 F5.3 --- pS Fraction of votes for combined Spiral
(S=Edg+cS+aS) category
89- 93 F5.3 --- pE0 ? Fraction of votes for Elliptical categories
following the debiasing procedure described
in Section 3.1
95- 99 F5.3 --- pS0 ? Fraction of votes for combined Spiral
categories following the debiasing procedure
described in Section 3.1
101 I1 --- fS [0/1]? Spiral flag (1)
103 I1 --- fE [0/1]? Elliptical flag (1)
105 I1 --- fU [0/1]? Uncertain flag (1)
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Note (1): Galaxies flagged as 'elliptical' or 'spiral' require 80%
of the vote in that category after the debiasing procedure has been
applied; all other galaxies are flagged 'uncertain'.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- objID SDSS objID
20- 21 I2 h RAh SDSS right ascension (J2000)
23- 24 I2 min RAm SDSS right ascension (J2000)
26- 30 F5.2 s RAs SDSS right ascension (J2000)
32 A1 --- DE- SDSS declination (J2000)
33- 34 I2 deg DEd SDSS declination (J2000)
36- 37 I2 arcmin DEm SDSS declination (J2000)
39- 42 F4.1 arcsec DEs SDSS declination (J2000)
44- 48 F5.3 --- fU Fraction of unclassified galaxies,
clean sample (1)
50- 54 F5.3 --- fM Fraction of misclassified galaxies,
clean sample (1)
56- 60 F5.3 --- <Dp>c Mean difference between raw and debiased
likelihoods, clean sample (1) (3)
62- 66 F5.3 --- e_<Dp>c Standard deviation of Dp
68- 72 F5.3 --- fM.g Fraction of misclassified galaxies,
greater sample (2)
74- 78 F5.3 --- <Dp>g Mean difference between raw and debiased
likelihoods, Greater sample (2)
80- 84 F5.3 --- e_<Dp>g Standard deviation of Dp, Greater sample (2) (3)
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Note (1): Clean sample has been defined by requiring 80% of the
corrected vote to be in a particular category.
Note (2): Greater sample has been defined by requiring 50% of the
corrected vote to be in a particular category.
Note (3): Dp is an indicator of the quality of an individual morphology
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 18 A18 --- objID SDSS objID
20- 21 I2 h RAh SDSS right ascension (J2000)
23- 24 I2 min RAm SDSS right ascension (J2000)
26- 30 F5.2 s RAs SDSS right ascension (J2000)
32 A1 --- DE- SDSS declination (J2000)
33- 34 I2 deg DEd SDSS declination (J2000)
36- 37 I2 arcmin DEm SDSS declination (J2000)
39- 42 F4.1 arcsec DEs SDSS declination (J2000)
44- 46 I3 --- N1 Mirrored 1 total number of votes for each object
48- 52 F5.3 --- pE1 Mirrored 1 fraction of votes for Elliptical
54- 58 F5.3 --- pcS1 Mirrored 1 fraction of votes for ClockWise
spirals category
60- 64 F5.3 --- paS1 Mirrored 1 fraction of votes for AntiClockWise
spirals category
66- 70 F5.3 --- pEdg1 Mirrored 1 fraction of votes for Edge-on spiral
72- 76 F5.3 --- pDK1 Mirrored 1 fraction of votes for Don't Know
78- 82 F5.3 --- pMg1 Mirrored 1 fraction of votes for Merger category
84- 88 F5.3 --- pS1 Mirrored 1 fraction of votes for combined Spiral (S=Edg+cS+aS) category
90- 92 I3 --- N2 Mirrored 2 total number of votes for each object
94- 98 F5.3 --- pE2 Mirrored 2 fraction of votes for Elliptical
100-104 F5.3 --- pcS2 Mirrored 2 fraction of votes for ClockWise
spirals category
106-110 F5.3 --- paS2 Mirrored 2 fraction of votes for AntiClockWise
spirals category
112-116 F5.3 --- pEdg2 Mirrored 2 fraction of votes for Edge-on spiral
118-122 F5.3 --- pDK2 Mirrored 2 fraction of votes for Don't Know
124-128 F5.3 --- pMg2 Mirrored 2 fraction of votes for Merger category
130-134 F5.3 --- pS2 Mirrored 2 fraction of votes for combined Spiral
(S=Edg+cS+aS) category
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Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 18 A18 --- objID SDSS objID
20- 21 I2 h RAh SDSS right ascension (J2000)
23- 24 I2 min RAm SDSS right ascension (J2000)
26- 30 F5.2 s RAs SDSS right ascension (J2000)
32 A1 --- DE- SDSS declination (J2000)
33- 34 I2 deg DEd SDSS declination (J2000)
36- 37 I2 arcmin DEm SDSS declination (J2000)
39- 42 F4.1 arcsec DEs SDSS declination (J2000)
44- 46 I3 --- Nm Monochrome total number of votes for each object
48- 52 F5.3 --- pEm Monochrome fraction of votes for Elliptical
54- 58 F5.3 --- pcSm Monochrome fraction of votes for ClockWise
spirals category
60- 64 F5.3 --- paSm Monochrome fraction of votes for AntiClockWise
spirals category
66- 70 F5.3 --- pEdgm Monochrome fraction of votes for Edge-on spiral
72- 76 F5.3 --- pDKm Monochrome fraction of votes for Don't Know
78- 82 F5.3 --- pMGm Monochrome fraction of votes for Merger category
84- 88 F5.3 --- pSm Monochrome fraction of votes for combined Spiral
(S=Edg+cS+aS) category
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Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 18 A18 --- objID SDSS objID
20- 21 I2 h RAh SDSS right ascension (J2000)
23- 24 I2 min RAm SDSS right ascension (J2000)
26- 30 F5.2 s RAs SDSS right ascension (J2000)
32 A1 --- DE- SDSS declination (J2000)
33- 34 I2 deg DEd SDSS declination (J2000)
36- 37 I2 arcmin DEm SDSS declination (J2000)
39- 42 F4.1 arcsec DEs SDSS declination (J2000)
44- 46 I3 --- Nt Total number of votes for each object
48- 49 I2 --- Nstd STD total number of votes for each object
51- 53 I3 --- Nt1 Mirrored 1 total number of votes for each object
55- 57 I3 --- Nt2 Mirrored 2 total number of votes for each object
59- 61 I3 --- Ntm Monochrome total number of votes for each object
63- 67 F5.3 --- pEm Monochrome fraction of votes for Elliptical
69- 73 F5.3 --- pcSm Monochrome fraction of votes for ClockWise
spirals category
75- 79 F5.3 --- paSm Monochrome fraction of votes for AntiClockWise
spirals category
81- 85 F5.3 --- pEdgm Monochrome fraction of votes for Edge-on spiral
87- 91 F5.3 --- pDKm Monochrome fraction of votes for Don't Know
93- 97 F5.3 --- pMgm Monochrome fraction of votes for Merger category
99-103 F5.3 --- pSm Monochrome fraction of votes for combined Spiral
(S=Edg+cS+aS) category
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History:
Data copied at http://data.galaxyzoo.org
(End) Patricia Vannier [CDS] 07-Feb-2011