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Table J.1
Description of columns in the GUViCS-SDSS matched catalog.
| Field | Format | Units | Explanation |
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| VPS_ID | I7 | – | ID number from this paper |
| SDSS_ObjID | I19 | – | SDSS object identifier |
| SDSS_SpecObjID | I19 | – | SDSS identifier pointing to spectrum of object if it exists |
| RAdeg | F9.5 | deg | Right ascension at UV center |
| DEdeg | F8.5 | deg | Declination at UV center |
| SDSS_MtchSep | F10.8 | deg | Angular separation between UV source and SDSS optical match |
| SDSS_RAdeg | F12.8 | deg | Right ascension in degrees at center of SDSS source in the r′-band |
| SDSS_DEdeg | F11.8 | deg | Declination in degrees at center of SDSS source in the r′-band |
| SDSS_phot_Clean | I1 | – | SDSS flag indicates if photometry is clean; clean=1 and not clean=0 |
| SDSS_phot_ObjType | I1 | – | Type classification of object: 0=unknown; 1=cosmic ray; 2=defect; 3=galaxy; 4=ghost; 5=knownobj; |
| 6=star; 7=trail; 8=sky; 9=notatype | |||
| u_petroMag | F11.5 | mag | Petrosian magnitude for u′-band in r′-band aperture |
| u_petroMagErr | F18.8 | mag | Error on u_petroMag |
| u_modelMag | F11.5 | mag | Better of De Vaucouleurs/exponential u′-band magnitude fit in the r′-band |
| u_modelMagErr | F14.8 | mag | Error on u_modelMag |
| u_cModelMag | F11.5 | mag | Linear combination of De Vaucouleurs+exponential magnitudes fit in the u′-band |
| u_cModelMagErr | F15.8 | mag | Error on u_cModelMag |
| u_petroRad | F10.6 | arcsec | Petrosian radius in u′-band |
| u_petroRadErr | F14.8 | arcsec | Error on petroRad_u |
| u_petroR50 | F12.6 | arcsec | Radius containing 50% of the Petrosian flux in u′-band |
| u_petroR50Err | F14.8 | arcsec | Error on u_petroR50 |
| u_petroR90 | F12.6 | arcsec | Radius containing 90% of the Petrosian flux in u′-band |
| u_petroR90Err | F15.9 | arcsec | Error on u_petroR90 |
| g_petroMag | F11.5 | mag | Petrosian magnitude for g′-band in r′-band Petrosian aperture |
| g_petroMagErr | F14.8 | mag | Error on g_petroMag |
| g_modelMag | F11.5 | mag | Better of De Vaucouleurs/exponential g′-band magnitude fit in the r′-band |
| g_modelMagErr | F14.8 | mag | Error on g_modelMag |
| g_cModelMag | F11.5 | mag | Linear combination of De Vaucouleurs+exponential magnitudes fit in the g′-band |
| g_cModelMagErr | F15.8 | mag | Error on g_cModelMag |
| g_petroRad | F10.6 | arcsec | Petrosian radius in g′-band |
| g_petroRadErr | F14.8 | arcsec | Error on g_petroRad |
| g_petroR50 | F12.6 | arcsec | Radius containing 50% of the Petrosian flux in g′-band |
| g_petroR50Err | F14.8 | arcsec | Error on g_petroR50 |
| g_petroR90 | F12.6 | arcsec | Radius containing 90% of the Petrosian flux in g′-band |
| g_petroR90Err | F15.9 | arcsec | Error on g_petroR90 |
| r_petroMag | F11.5 | mag | Petrosian magnitude for r′-band in r′-band Petrosian aperture |
| r_petroMagErr | F18.8 | mag | Error on r_petroMag |
| r_modelMag | F11.5 | mag | Better of De Vaucouleurs/exponential r′-band magnitude fit in the r′-band |
| r_modelMagErr | F14.8 | mag | Error on r_modelMag |
| r_cModelMag | F11.5 | mag | Linear combination of De Vaucouleurs+exponential magnitudes fit in the r′-band |
| r_cModelMagErr | F15.8 | mag | Error on r_cModelMag |
| r_petroRad | F10.6 | arcsec | Petrosian radius in r′-band |
| r_petroRadErr | F14.8 | arcsec | Error on r_petroRad |
| r_petroR50 | F12.6 | arcsec | Radius containing 50% of the Petrosian flux in r′-band |
| r_petroR50Err | F14.8 | arcsec | Error on r_petroR50 |
| r_petroR90 | F12.6 | arcsec | Radius containing 90% of the Petrosian flux in r′-band |
| r_petroR90Err | F15.9 | arcsec | Error on r_petroR90 |
| i_petroMag | F11.5 | mag | Petrosian magnitude for i′-band in r′-band Petrosian aperture |
| i_petroMagErr | F14.8 | mag | Error on i_petroMag |
| i_modelMag | F11.5 | mag | Better of De Vaucouleurs/exponential i′-band magnitude fit in the r′-band |
| i_modelMagErr | F14.8 | mag | Error on i_modelMag |
| i_cModelMag | F11.5 | mag | Linear combination of De Vaucouleurs+exponential magnitudes fit in the i′-band |
| i_cModelMagErr | F15.8 | mag | Error on i_cModelMag |
| i_petroRad | F10.6 | arcsec | Petrosian radius in i′-band |
| i_petroRadErr | F14.8 | arcsec | Error on i_petroRad |
| i_petroR50 | F12.6 | arcsec | Radius containing 50% of the Petrosian flux in i′-band |
| i_petroR50Err | F14.8 | arcsec | Error on i_petroR50 |
| i_petroR90 | F12.6 | arcsec | Radius containing 90% of the Petrosian flux in i′-band |
| i_petroR90Err | F15.9 | arcsec | Error on i_petroR90 |
| z_petroMag | F11.5 | – | Petrosian magnitude for z′-band in r′-band Petrosian aperture |
| z_petroMagErr | F15.8 | mag | Error on z_petroMag |
| z_modelMag | F11.5 | mag | Better of De Vaucouleurs/exponential z′-band magnitude fit in the r′-band |
| z_modelMagErr | F14.8 | mag | Error on z_modelMag |
| z_cModelMag | F11.5 | mag | Linear combination of De Vaucouleurs+exponential magnitudes fit in the z′-band |
| z_cModelMagErr | F15.8 | mag | Error on z_cModelMag |
| z_petroRad | F10.6 | arcsec | Petrosian radius in z′-band |
| z_petroRadErr | F14.8 | arcsec | Error on z_petroRad |
| z_petroR50 | F12.6 | arcsec | Radius containing 50% of the Petrosian flux in z′-band |
| z_petroR50Err | F14.8 | arcsec | Error on z_petroR50 |
| z_petroR90 | F12.6 | arcsec | Radius containing 90% of the Petrosian flux in z′-band |
| z_petroR90Err | F15.9 | arcsec | Error on z_petroR90 |
| SDSS_survey | A6 | – | SDSS survey name |
| SDSS_specz | F12.6 | z | Best SDSS spectroscopic redshift |
| SDSS_specz_Err | F12.6 | z | Error on SDSS_specz |
| SDSS_specz_class | A6 | – | Classifcation of SDSS source as “GALAXY”, “QSO”, or “STAR” based on features in the objects spectrum |
| SDSS_specz_Warning | I4 | – | Bitmask of warning values where 0=good |
| SDSS_specz_noQSO | F12.6 | z | Best SDSS spectroscopic redshift when excluding QSO fit |
| SDSS_specz_Err_noQSO | F12.6 | z | Error on SDSS_specz_noQSO |
| SDSS_specz_Warning_noQSO | I4 | – | Same warning as SDSS_specz_Warning, but for SDSS_specz_noQSO |
| SDSS_specz_class_noQSO | A6 | – | Same classification as SDSS_specz_class, but for SDSS_specz_noQSO |
| SDSS_photzNN | F12.6 | z | SDSS photometric redshift from “neural network” algorithm |
| SDSS_photzNN_Err | F12.6 | z | Error on SDSS_photzNN |
| SDSS_photzRF | F12.6 | z | SDSS photometric redshift from “random forest” algorithm |
| SDSS_photzRF_Err | F12.6 | z | Error on SDSS_photzRF |
Notes. Many of the SDSS field descriptions are taken directly from the SDSS DR9 schema page here: http://skyserver.sdss3.org/dr9/en/help/browser/browser.asp
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