Galaxy Zoo 2: detailed morphological classifications for 304,122 galaxies from the Sloan Digital Sky Survey
We present the data release for Galaxy Zoo 2 (GZ2), a citizen science project with more than 16 million morphological classifications of 304,122 galaxies drawn from the Sloan Digital Sky Survey. Morphology is a powerful probe for quantifying a galaxy's dynamical history; however, automatic clas...
| Egile Nagusiak: | , , , , , , , , , , , , , , , , , |
|---|---|
| Formatua: | Journal article |
| Hizkuntza: | English |
| Argitaratua: |
2013
|
| _version_ | 1826305860374102016 |
|---|---|
| author | Willett, K Lintott, C Bamford, S Masters, K Simmons, B Casteels, K Edmondson, E Fortson, L Kaviraj, S Keel, W Melvin, T Nichol, R Raddick, M Schawinski, K Simpson, R Skibba, R Smith, A Thomas, D |
| author_facet | Willett, K Lintott, C Bamford, S Masters, K Simmons, B Casteels, K Edmondson, E Fortson, L Kaviraj, S Keel, W Melvin, T Nichol, R Raddick, M Schawinski, K Simpson, R Skibba, R Smith, A Thomas, D |
| author_sort | Willett, K |
| collection | OXFORD |
| description | We present the data release for Galaxy Zoo 2 (GZ2), a citizen science project with more than 16 million morphological classifications of 304,122 galaxies drawn from the Sloan Digital Sky Survey. Morphology is a powerful probe for quantifying a galaxy's dynamical history; however, automatic classifications of morphology (either by computer analysis of images or by using other physical parameters as proxies) still have drawbacks when compared to visual inspection. The large number of images available in current surveys makes visual inspection of each galaxy impractical for individual astronomers. GZ2 uses classifications from volunteer citizen scientists to measure morphologies for all galaxies in the DR7 Legacy survey with m_r>17, in addition to deeper images from SDSS Stripe 82. While the original Galaxy Zoo project identified galaxies as early-types, late-types, or mergers, GZ2 measures finer morphological features. These include bars, bulges, and the shapes of edge-on disks, as well as quantifying the relative strengths of galactic bulges and spiral arms. This paper presents the full public data release for the project, including measures of accuracy and bias. The majority (>90%) of GZ2 classifications agree with those made by professional astronomers, especially for morphological T-types, strong bars, and arm curvature. Both the raw and reduced data products can be obtained in electronic format at http://data.galaxyzoo.org . |
| first_indexed | 2024-03-07T06:39:15Z |
| format | Journal article |
| id | oxford-uuid:f8b5d4b4-4728-44c4-9c27-02877577b780 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:39:15Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:f8b5d4b4-4728-44c4-9c27-02877577b7802022-03-27T12:52:24ZGalaxy Zoo 2: detailed morphological classifications for 304,122 galaxies from the Sloan Digital Sky SurveyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f8b5d4b4-4728-44c4-9c27-02877577b780EnglishSymplectic Elements at Oxford2013Willett, KLintott, CBamford, SMasters, KSimmons, BCasteels, KEdmondson, EFortson, LKaviraj, SKeel, WMelvin, TNichol, RRaddick, MSchawinski, KSimpson, RSkibba, RSmith, AThomas, DWe present the data release for Galaxy Zoo 2 (GZ2), a citizen science project with more than 16 million morphological classifications of 304,122 galaxies drawn from the Sloan Digital Sky Survey. Morphology is a powerful probe for quantifying a galaxy's dynamical history; however, automatic classifications of morphology (either by computer analysis of images or by using other physical parameters as proxies) still have drawbacks when compared to visual inspection. The large number of images available in current surveys makes visual inspection of each galaxy impractical for individual astronomers. GZ2 uses classifications from volunteer citizen scientists to measure morphologies for all galaxies in the DR7 Legacy survey with m_r>17, in addition to deeper images from SDSS Stripe 82. While the original Galaxy Zoo project identified galaxies as early-types, late-types, or mergers, GZ2 measures finer morphological features. These include bars, bulges, and the shapes of edge-on disks, as well as quantifying the relative strengths of galactic bulges and spiral arms. This paper presents the full public data release for the project, including measures of accuracy and bias. The majority (>90%) of GZ2 classifications agree with those made by professional astronomers, especially for morphological T-types, strong bars, and arm curvature. Both the raw and reduced data products can be obtained in electronic format at http://data.galaxyzoo.org . |
| spellingShingle | Willett, K Lintott, C Bamford, S Masters, K Simmons, B Casteels, K Edmondson, E Fortson, L Kaviraj, S Keel, W Melvin, T Nichol, R Raddick, M Schawinski, K Simpson, R Skibba, R Smith, A Thomas, D Galaxy Zoo 2: detailed morphological classifications for 304,122 galaxies from the Sloan Digital Sky Survey |
| title | Galaxy Zoo 2: detailed morphological classifications for 304,122
galaxies from the Sloan Digital Sky Survey |
| title_full | Galaxy Zoo 2: detailed morphological classifications for 304,122
galaxies from the Sloan Digital Sky Survey |
| title_fullStr | Galaxy Zoo 2: detailed morphological classifications for 304,122
galaxies from the Sloan Digital Sky Survey |
| title_full_unstemmed | Galaxy Zoo 2: detailed morphological classifications for 304,122
galaxies from the Sloan Digital Sky Survey |
| title_short | Galaxy Zoo 2: detailed morphological classifications for 304,122
galaxies from the Sloan Digital Sky Survey |
| title_sort | galaxy zoo 2 detailed morphological classifications for 304 122 galaxies from the sloan digital sky survey |
| work_keys_str_mv | AT willettk galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT lintottc galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT bamfords galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT mastersk galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT simmonsb galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT casteelsk galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT edmondsone galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT fortsonl galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT kavirajs galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT keelw galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT melvint galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT nicholr galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT raddickm galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT schawinskik galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT simpsonr galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT skibbar galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT smitha galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey AT thomasd galaxyzoo2detailedmorphologicalclassificationsfor304122galaxiesfromthesloandigitalskysurvey |