================================================================================ The GALEX Ultraviolet Virgo Cluster Survey (GUViCS) III. The Ultraviolet Source Catalogs Voyer E.N., Boselli A., Boissier S., Heinis S., Cortese L., Ferrarese L., Cote P., Cuillandre J.-C., Gwyn S.D.J., Peng E.W., Zhang H., Liu c. =2014A&A...?..? ================================================================================ Keywords: Catalogs - Galaxies: clusters: individual: Virgo - Galaxies: photometry - Galaxies: fundamental parameters - Galaxies: star formation - Ultraviolet: galaxies Abstract: In this paper we introduce the deepest and most extensive ultraviolet extragalactic source catalogs of the Virgo Cluster area to date. Archival and targeted GALEX imaging is compiled and combined to provide the deepest possible coverage over ~120 deg^2 in the NUV (lambda_eff=2316 angstroms) and ~40 deg^2 in the FUV (lambda_eff=1539 angstroms) between 180 deg <= R.A. <= 195 deg and 0 deg <= Decl. <= 20 deg. We measure the integrated photometry of 1770 extended UV sources of all galaxy types and use GALEX pipeline photometry for 1,230,855 point-like sources in the foreground, within, and behind the cluster. Extended source magnitudes are reliable to m_UV ~22, showing a ~0.01 sigma difference from their asymptotic magnitudes. Point- like source magnitudes have a 1 sigma standard deviation within ~0.2 mag down to m_uv ~23. The point-like source catalog is cross-matched with large optical databases and surveys including the SDSS DR9 (> 1 million Virgo Cluster sources), the Next Generation Virgo Cluster Survey (NGVS; >13 million Virgo Cluster sources), and the NED (~30,000 sources in the Virgo Cluster). We find that 69% of the entire UV point-like source catalog has a unique optical counterpart, 11% of which are stars and 0.01% (129) are Virgo cluster members that are neither in the VCC nor part of the bright CGCG galaxy catalog (i.e., m_pg < 14.5). These data are collected in three \ catalogs containing the UV extended sources, the UV point-like sources, and the most relevant optical parameters of UV-optically matched point-like sources for further studies from SDSS. The GUViCS catalogs provide a unique set of data for future work on UV and multiwavelength studies in the cluster and background environments. Description: These catalogs are based on GALEX NUV and FUV source detections in and behind the Virgo Cluster. The detections are split into catalogs of extended sources and point-like sources. The UV Virgo Cluster Extended Source catalog (UV_VES.fit) provides the deepest and most extensive UV photometric data of extended galaxies in Virgo to date. If certain data is not available for a given source then a null value is entered (e.g. -999, -99). UV point-like sources are matched with SDSS, NGVS, and NED and the relevent photometry and further data from these databases/catalogs are provided in this compiliation of catalogs. The primary GUViCS UV Virgo Cluster Point- Like Source catalog is UV_VPS.fit. This catalog provides the most useful GALEX pipeline NUV and FUV photometric parameters, and categorizes sources as stars, Virgo members, and background sources, when possible. It also provides identifiers for optical matches in the SDSS and NED, and indicates if a match exists in the NGVS, only if GUViCS-optical matches are one-to-one. NED spectroscopic redshifts are also listed for GUViCS-NED one-to-one matches. If certain data is not available for a given source a null value is entered. Additionally, the catalog is useful for quick access to optical data on one-to-one GUViCS-SDSS matches.The only parameter available in the catalog for UV sources that have multiple SDSS matches is the total number of multiple matches, i.e. SDSS_NUM_MTCHS. Multiple GUViCS sources matched to the same SDSS source are also flagged given a total number of matches, SDSS_NUM_MTCHS, of one. All other fields for multiple matches are set to a null value of -9999. In order to obtain full optical SDSS data for multiply matched UV sources in both scenarios, the user can cross-correlate the GUViCS ID of the sources of interest with the full GUViCS-SDSS matched catalog in GUV_SDSS.fit. The GUViCS-SDSS matched catalog, GUV_SDSS.fit, provides the most relevant SDSS data on all GUViCS-SDSS matches, including one-to-one matches and multiply matched sources. The catalog gives full SDSS identification information, complete SDSS photometric measurements in multiple aperture types, and complete redshift information (photometric and spectroscopic). It is ideal for large statistical studies of galaxy populations at multiple wavelengths in the background of the Virgo Cluster. The catalog can also be used as a starting point to study and search for previously unknown UV- bright point-like objects within the Virgo Cluster. If certain data is not available for a given source that field is given a null value. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file UV_VES.fit 232 1770 GUViCS UV Virgo Cluster extended sources UV_VPS.fit 919 1230855 GUViCS UV Virgo Cluster point-like sources GUV_SDSS.fit 1075 1056793 All GUViCS-SDSS matched point-like sources -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Byte-by-byte Description of file: UV_VES.fit -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 A8 --- VCC_ID VCC ID from Binggeli et al. (1985,1993) 10- 17 A8 --- NGC_ID NGC ID 19- 32 A14 --- other_ID *Identification from another catalog 34- 42 F9.5 deg RAdeg Right ascension (J2000) 44- 51 F8.5 deg DEdeg Declination (J2000) 53- 80 A28 --- GtileNUV Deepest GALEX tile available in NUV filter 82- 109 A28 --- GtileFUV Deepest GALEX tile available in FUV filter 111- 118 F8.2 s exptNUV Exposure time of NUV GALEX image 120- 127 F8.2 s exptFUV Exposure time of FUV GALEX image 129- 134 F6.2 mag Bmag B magnitude, Binggeli et al. (1985,1993) 136- 141 I6 km/s Vel Velocity, Binggeli et al. (1985,1993) 143- 145 I3 arcsec MajAxis Semi-major axis of galaxy aperture (1) 147- 149 I3 arcsec MinAxis Semi-minor axis of galaxy aperture (1) 151- 156 F6.2 deg PA Position angle 158- 160 I3 --- Type *Galaxy type from GOLDMine, where available 162- 169 F8.3 cnt/s NUVflux NUV integrated flux 171- 178 F8.3 cnt/s e_NUVflux Error on NUV integrated flux 180- 187 F8.3 cnt/s FUVflux FUV integrated flux 189- 196 F8.3 cnt/s e_FUVflux Error on FUV integrated flux 198- 205 F8.3 mag NUVmag NUV integrated magnitude 207- 214 F8.3 mag e_NUVmag Error on NUV integrated magnitude 216- 223 F8.3 mag FUVmag FUV integrated magnitude 225- 232 F8.3 mag e_FUVmag Error on FUV integrated magnitude -------------------------------------------------------------------------------- Note (1): The galaxy aperture is defined in the NUV galaxy image, but used for both NUV and FUV integrated photometry. Note on other_ID: If the galaxy does not have a VCC or NGC ID, it is given the next most relevent ID from the GOLDMine or NED databases, depending where it was selected from. Note on Type: Galaxy types are listed where available and are from the GOLDMine database Binggeli et al. (1985,1993). Possible values are -3 through 20: -3 = dS0 -2 = dE/dS0 -1 = dE (d:E) 0 = E-E/S0 1 = S0 2 = S0a-S0/Sa 3 = Sa 4 = Sab 5 = Sb 6 = Sbc 7 = Sc (dSc) 8 = Scd 9 = Sd 10 = Sdm-Sd/Sm 11 = Sm 12 = Im (Im/S) 13 = pec 14 = S/BCD (dS/BCD dS0/BCD Sd/BCD) 15 = Sm/BCD 16 = Im/BCD 17 = BCD 18 = S (dS) 19 = dIm/dE 20 = ? -------------------------------------------------------------------------------- Byte-by-byte Description of file: UV_VPS.fit -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 7 I7 --- VPS_ID ID number in Voyer et al. (2014) 9- 20 F12.8 deg RAdeg Right ascension at UV galaxy center 22- 32 F11.8 deg DEdeg Declination at UV galaxy center 34- 68 A35 --- NUV_OrgPipFld Deepest NUV GALEX field of source 70- 104 A35 --- FUV_OrgPipFld Deepest FUV GALEX field of source 106- 113 F8.2 s NUV_Expt Exposure time of NUV_OrgPipFld 115- 122 F8.2 s FUV_Expt Exposure time of FUV_OrgPipFld 124- 127 I4 --- NUV_GUVfldOvlps *Number of shallower NUV fields 129- 132 I4 --- FUV_GUVfldOvlps *Number of shallower FUV fields 134- 137 I4 --- NUV_GoodPhotFlag *Photometry flag 139- 142 I4 --- FUV_GoodPhotFlag *Photometry flag 144- 147 I4 --- NUV_SrcRemFlag See Table B.1 of Voyer et al. (2014) 149- 152 I4 --- FUV_SrcRemFlag See Table B.1 of Voyer et al. (2014) 154- 166 F13.8 mag E_BV *Galactic reddening as E(B-V) 168- 180 F13.8 deg NUV_FOV_RADIUS Source distance from center of FOV 182- 194 F13.8 deg FUV_FOV_RADIUS Source distance from center of FOV 196- 205 F10.4 cnt/s NUV_FLUX Calibrated flux from AUTO aperture 207- 215 F9.4 cnt/s NUV_FLUXERR Error on NUV_FLUX 217- 225 F9.4 mag NUV_MAG Calibrated AB mag from AUTO aperture 227- 235 F9.4 mag NUV_MAGERR Error on NUV_MAG 237- 246 F10.4 cnt/s FUV_FLUX Calibrated flux from AUTO aperture 248- 256 F9.4 cnt/s FUV_FLUXERR Error on FUV_FLUX 258- 266 F9.4 mag FUV_MAG Calibrated AB mag from AUTO aperture 268- 276 F9.4 mag FUV_MAGERR Error on FUV_MAG 278- 286 F9.4 --- NUV_S2N signal-to-noise from NUV_FLUX value 288- 296 F9.4 --- FUV_S2N signal-to-noise from FUV_FLUX value 298- 308 F11.4 cnt/s FUV_NCAT_FLUX FUV flux derived using NUV position 310- 318 F9.4 cnt/s FUV_NCAT_FLUXERR Error on FUV_NCAT_FLUX 320- 328 F9.4 mag FUV_NCAT_MAG calibrated AB mag from FUV_NCAT_FLUX 330- 338 F9.4 mag FUV_NCAT_MAGERR Error on FUV_NCAT_MAG 340- 348 F9.4 --- FUV_NCAT_S2N Signal to noise for fuv_ncat_flux 350- 362 F13.8 --- NUV_SKYBG *Background value photons/s/arcsec^2 364- 376 F13.8 --- FUV_SKYBG *Background value photons/s/arcsec^2 378- 381 I4 --- NUV_ARTIFACT *Logical OR of artifact flags 383- 386 I4 --- FUV_ARTIFACT *Logical OR of artifact flags 388- 392 I5 --- NUV_NUMBER Running GALEX object number 394- 403 F10.5 pix NUV_FLUX_RADIUS_2 Half-light radius from AUTO aperture 405- 416 F12.5 pix NUV_FLUX_RADIUS_4 90% radius from AUTO aperture 418- 426 F9.5 --- NUV_KRON_RADIUS NUV Kron apertures in units of A or B 428- 436 F9.5 --- NUV_MU_MAX Peak surface brightness above backgrd 438- 446 F9.5 pix NUV_A_IMAGE Profile RMS along NUV major axis 448- 456 F9.5 pix NUV_B_IMAGE Profile RMS along NUV minor axis 458- 466 F9.5 deg NUV_THETA_IMAGE Position angle 468- 476 F9.5 pix NUV_ERRA_IMAGE RMS position error along major axis 478- 486 F9.5 pix NUV_ERRB_IMAGE RMS position error along minor axis 488- 496 F9.5 deg NUV_ERRTHETA_IMAGE Error ellipse NUV position angle 498- 506 F9.5 deg NUV_FWHM_WORLD NUV FWHM assuming a gaussian core 508- 509 I2 --- NUV_FLAGS NUV extraction flags 511- 517 F7.5 --- NUV_CLASS_STAR SExtractor star/galaxy classifier 519- 523 I5 --- FUV_NUMBER Running GALEX object number 525- 533 F9.5 pix FUV_FLUX_RADIUS_2 Half-light radius from AUTO aperture 535- 545 F11.5 pix FUV_FLUX_RADIUS_4 90% radius from AUTO aperture 547- 555 F9.5 --- FUV_KRON_RADIUS FUV Kron apertures in units of A or B 557- 565 F9.5 --- FUV_MU_MAX Peak surface brightness above backgrd 567- 575 F9.5 pix FUV_A_IMAGE Profile RMS along FUV major axis 577- 585 F9.5 pix FUV_B_IMAGE Profile RMS along FUV minor axis 587- 595 F9.5 deg FUV_THETA_IMAGE Position angle 597- 605 F9.5 pix FUV_ERRA_IMAGE RMS position error along major axis 607- 615 F9.5 pix FUV_ERRB_IMAGE RMS position error along minor axis 617- 625 F9.5 deg FUV_ERRTHETA_IMAGE Error ellipse FUV position angle 627- 635 F9.5 deg FUV_FWHM_WORLD FUV FWHM assuming a gaussian core 637- 638 I2 --- FUV_FLAGS FUV extraction flags 640- 646 F7.5 --- FUV_CLASS_STAR SExtractor star/galaxy classifier 648- 648 I1 --- SDSS_NumMtchs Number of SDSS matches to source 650- 652 A3 --- SDSS_multUV *multiple UV match to optical source 654- 672 I19 --- SDSS_ObjID SDSS object identifier 674- 687 F14.8 deg SDSS_MtchSep Angular separation from match 689- 693 I5 --- SDSS_phot_Clean SDSS photometry clean=1, not clean=0 695- 699 I5 --- SDSS_phot_ObjType *SDSS Type classification of object 701- 706 A6 --- SDSS_survey SDSS survey name 708- 719 F12.6 --- SDSS_specz SDSS spectroscopic z 721- 732 F12.6 --- SDSS_specz_Err Error on SDSS_specz 734- 745 F12.6 --- SDSS_photzNN *SDSS photometric z 747- 758 F12.6 --- SDSS_photzNN_Err Error on SDSS_photzNN 760- 771 F12.6 --- SDSS_photzRF *SDSS photometric z 773- 784 F12.6 --- SDSS_photzRF_Err Error on SDSS_photzRF 786- 787 A2 --- SDSS_VM *Flag for Virgo Cluster members 789- 790 A2 --- SDSS_BCKD *Flag for Virgo background sources 792- 795 A4 --- SDSS_BCKDclass *Flag indicates classification method 797- 800 A4 --- SDSS_BCKDclassBrkdn *Flag for classification breakdown 802- 802 A1 --- SDSS_STAR ='*' if source is SDSS determined star 804- 807 A4 --- SDSS_STARclass *Flag indicates classification method 809- 809 A1 --- SDSS_TBD *Flag for objects to be determined 811- 812 I2 --- NGVS_NumMtchs Number of NGVS matches to source 814- 816 A3 --- NGVS_multUV *multiple UV match to optical source 818- 818 A1 --- NGVS_STAR ='*' if source is NGVS determined star 820- 820 I1 --- NED_NumMtchs Number of NED matches to source 822- 824 A3 --- NED_multUV *multiple UV match to optical source 826- 855 A30 --- NED_ObjID Primary Object identifer from NED 857- 867 F11.5 deg NED_RAdeg Right ascension of NED optical source 869- 879 F11.5 deg NED_DEdeg Declination of NED optical source 881- 894 F14.8 deg NED_MtchSep Angular separation from match 896- 906 F11.5 --- NED_z Spectroscopic z of the NED source 908- 911 A4 --- NED_zQF The NED quality flag on NED_z 913- 914 A2 --- NED_VM *Flag for Virgo Cluster members 916- 917 A2 --- NED_BCKD *Flag for Virgo background sources 919- 919 A1 --- NED_STAR *Flag for stellar sources -------------------------------------------------------------------------------- Note on NUV_GUVfldOvlps: Number of shallower NUV fields that also contain this source. Note on FUV_GUVfldOvlps: Number of shallower NUV fields that also contain this source. Note on NUV_GoodPhotFlag: If NUV_ARTIFACT contains 2, 4, or 512 then photometry is considered bad. The flag value is set to: 0 = good 1 = bad Note on FUV_GoodPhotFlag: If FUV_ARTIFACT contains 2, 4, or 512 then photometry is considered bad. The flag value is set to: 0 = good 1 = bad Note on E_BV: Galactic reddening expressed as E(B-V) from the Galactic extinctions maps Schlegel et al. (1998). Note on NUV_SKYBG: Background value in photons per second per square arcsecond at the source position taken in GALEX pipeline -nd-skybg.fits file image. Note on FUV_SKYBG: Background value in photons per second per square arcsecond at the source position taken in GALEX pipeline -fd-skybg.fits file image. Note on NUV_ARTIFACT: Logical OR of artifact flags for pixels within a 3x3 pixel box in GALEX pipeline -nd-flags.fits image. Note on FUV_ARTIFACT: Logical OR of artifact flags for pixels within a 3x3 pixel box in GALEX pipeline -fd-flags.fits image Note on SDSS_multUV: Flag is set to 'mUV' if this UV sources shares a SDSS match with one or more other UV sources. Note on SDSS_phot_ObjType: 0 = unknown 1 = cosmic ray 2 = defect 3 = galaxy 4 = ghost 5 = known object 6 = star 7 = trail 8 = sky 9 = not a type Note on SDSS_photzNN: Photometric redshift from the SDSS 'neural network' algorithm. Note on SDSS_photzRF: Photometric redshift from the SDSS 'random forest' algorithm. Note on SDSS_VM: Flag value is 'VM' if the source is a member of the Virgo Cluster based on SDSS photometric z or SDSS spectroscopic z. Note on SDSS_BCKD: Flag value is 'BK' if the source is located in the background of the Virgo Cluster based on its SDSS photometric or spectroscopic z. Note on SDSS_BCKDclassBrkdn: If the sources is a background source, as indicated by SDSS_BCKD=BK, then this flag indicates how this was determined: PHOT = background source based on photometric z SPEC = background source based on spectroscopic z BOTH = background source based on photometric and spectroscopic z Note on SDSS_BCKDclassBrkdn: Flag value is various combinations of 'PNN','PRF', and 'SPEC' to provide further details on which photometric z and/or spectroscopic z was used to classify the source as a background source. Note on SDSS_STARclass: If the source is a star, this flag value indicates how that was determined in the SDSS data: PHOT = star from photo point spread function SPEC = star from spectra BOTH = star from both PHOT and SPEC methods Note on SDSS_TBD: Flag value is 'TBD' if UV sources is matched to an SDSS source, but the sources is uncategorizable based on available SDSS optical parameters. Note on NGVS_multUV: Flag is set to 'mUV' if this UV sources shares a NGVS match with one or more other UV sources. Note on NED_multUV: Flag is set to 'mUV' if this UV sources shares a NED match with one or more other UV sources. Note on NED_VM: Flag value is 'VM' if the source is a member of the Virgo Cluster based on NED spectroscopic z. Note on NED_BCKD: Flag value is 'BK' if the source is located in the background of the Virgo Cluster based on the NED spectroscopic z. Note on NED_STAR: Flag is set to '*' if the object is a star based on visual investigation of NED data. -------------------------------------------------------------------------------- Byte-by-byte Description of file: G-S_all.fit -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 7 I7 --- VPS_ID ID number in Voyer et al. (2014) 9- 27 I19 --- SDSS_ObjID SDSS object identifier 29- 47 I19 --- SDSS_SpecObjID SDSS ID points to object spectrum 49- 57 F9.5 deg RAdeg Right ascension at UV center 59- 66 F8.5 deg DEdeg Declination at UV center 68- 77 F10.8 deg SDSS_MtchSep Angular separation to match 79- 90 F12.8 deg SDSS_RAdeg Right ascension SDSS source (1) 92- 102 F11.8 deg SDSS_DEdeg Declination SDSS source (1) 104- 104 I1 --- SDSS_phot_Clean photometry clean=1, not clean=0 106- 106 I1 --- SDSS_phot_ObjType *Type classification of object 108- 118 F11.5 mag u_petroMag u' Petrosian magnitude for (1) 120- 137 F18.8 mag u_petroMagErr Error on u_petroMag 139- 149 F11.5 mag u_modelMag u' magnitude (1) (2) 151- 164 F14.8 mag u_modelMagErr Error on u_modelMag 166- 176 F11.5 mag u_cModelMag DeVaucouleurs+exponential mag (3) 178- 192 F15.8 mag u_cModelMagErr Error on u_cModelMag 194- 203 F10.6 arcs u_petroRad Petrosian radius in u' 205- 218 F14.8 arcs u_petroRadErr Error on petroRad_u 220- 231 F12.6 arcs u_petroR50 Radius with 50% of Petrosian flux 233- 246 F14.8 arcs u_petroR50Err Error on u_petroR50 248- 259 F12.6 arcs u_petroR90 Radius with 90% of Petrosian flux 261- 275 F15.9 arcs u_petroR90Err Error on u_petroR90 277- 287 F11.5 mag g_petroMag Petrosian magnitude for g' (1) 289- 302 F14.8 mag g_petorMagErr Error on g_petroMag 304- 314 F11.5 mag g_modelMag g' magnitude (1) (2) 316- 329 F14.8 mag g_modelMagErr Error on g_modelMag 331- 341 F11.5 mag g_cModelMag DeVaucouleurs+exponential mag (3) 343- 357 F15.8 mag g_cModelMagErr Error on g_cModelMag 359- 368 F10.6 arcs g_petroRad Petrosian radius in g' 370- 383 F14.8 arcs g_petroRadErr Error on g_petroRad 385- 396 F12.6 arcs g_petroR50 Radius with 50% of Petrosian flux 398- 411 F14.8 arcs g_petroR50Err Error on g_petroR50 413- 424 F12.6 arcs g_petroR90 Radius with 90% of Petrosian flux 426- 440 F15.9 arcs g_petroR90Err Error on g_petroR90 442- 452 F11.5 mag r_petroMag Petrosian magnitude for r' (1) 454- 471 F18.8 mag r_petroMagErr Error on r_petroMag 473- 483 F11.5 mag r_modelMag r' magnitude (1) (2) 485- 498 F14.8 mag r_modelMagErr Error on r_modelMag 500- 510 F11.5 mag r_cModelMag DeVaucouleurs+exponential mag (3) 512- 526 F15.8 mag r_cModelMagErr Error on r_cModelMag 528- 537 F10.6 arcs r_petroRad Petrosian radius in r' 539- 552 F14.8 arcs r_petroRadErr Error on r_petroRad 554- 565 F12.6 arcs r_petroR50 Radius with 50% of Petrosian flux 567- 580 F14.8 arcs r_petroR50Err Error on r_petroR50 582- 593 F12.6 arcs r_petroR90 Radius with 90% of Petrosian flux 595- 609 F15.9 arcs r_petroR90Err Error on r_petroR90 611- 621 F11.5 mag i_petroMag Petrosian magnitude for i' (1) 623- 636 F14.8 mag i_petroMagErr Error on i_petroMag 638- 648 F11.5 mag i_modelMag i' magnitude (1) (2) 650- 663 F14.8 mag i_modelMagErr Error on i_modelMag 665- 675 F11.5 mag i_cModelMag DeVaucouleurs+exponential mag (3) 677- 691 F15.8 mag i_cModelMagErr Error on i_cModelMag 693- 702 F10.6 arcs i_petroRad Petrosian radius in i' 704- 717 F14.8 arcs i_petroRadErr Error on i_petroRad 719- 730 F12.6 arcs i_petroR50 Radius with 50% of Petrosian flux 732- 745 F14.8 arcs i_petroR50Err Error on i_petroR50 747- 758 F12.6 arcs i_petroR90 Radius with 90% of Petrosian flux 760- 774 F15.9 arcs i_petroR90Err Error on i_petroR90 776- 786 F11.5 mag z_petroMag Petrosian magnitude for z' in (1) 788- 802 F15.8 mag z_petroMagErr Error on z_petroMag 804- 814 F11.5 mag z_modelMag z' magnitude (1) (2) 816- 829 F14.8 mag z_modelMagErr Error on z_modelMag 831- 841 F11.5 mag z_cModelMag DeVaucouleurs+exponential mag (3) 843- 857 F15.8 mag z_cModelMagErr Error on z_cModelMag 859- 868 F10.6 arcs z_petroRad Petrosian radius in z' 870- 883 F14.8 arcs z_petroRadErr Error on z_petroRad 885- 896 F12.6 arcs z_petroR50 Radius with 50% of Petrosian flux 898- 911 F14.8 arcs z_petroR50Err Error on z_petroR50 913- 924 F12.6 arcs z_petroR90 Radius with 90% of Petrosian flux 926- 940 F15.9 arcs z_petroR90Err Error on z_petroR90 942- 947 A6 --- SDSS_survey SDSS survey name 949- 960 F12.6 --- SDSS_specz Best spectroscopic z 962- 973 F12.6 --- SDSS_specz_Err Error on SDSS_specz 975- 980 A6 --- SDSS_specz_class *Classifcation of SDSS source 982- 985 I4 --- SDSS_specz_Warning Bitmask of warning values, 0=good 987- 998 F12.6 --- SDSS_specz_noQSO Best SDSS spectroscopic z (4) 1000- 1011 F12.6 --- SDSS_specz_Err_noQSO Error on SDSS_specz_noQSO 1013- 1016 I4 --- SDSS_specz_Warning_noQSO Bitmask of warning values, 0=good 1018- 1023 A6 --- SDSS_specz_class_noQSO *Classifcation of SDSS source 1025- 1036 F12.6 --- SDSS_photzNN *photometric z 1038- 1049 F12.6 --- SDSS_photzNN_Err Error on SDSS_photzNN 1051- 1062 F12.6 --- SDSS_photzRF *photometric z 1064- 1075 F12.6 --- SDSS_photzRF_Err Error on SDSS_photzRF -------------------------------------------------------------------------------- Note (1): These SDSS parameters or measurements are taken from the r' data or made in the r' aperture. Note (2): Better of De Vaucouleurs/exponential magnitudes in the given band. Note (3): Linear combination of De Vaucouleurs+exponential magnitudes. Note (4): Parameter is calculated when excluding the QSO fit. Note on SDSS_phot_ObjType: 0 = unknown 1 = cosmic ray 2 = defect 3 = galaxy 4 = ghost 5 = known object 6 = star 7 = trail 8 = sky 9 = not a type Note on SDSS_specz_class and SDSS_specz_class_noQSO: Classifications are based on features in the objects spectrum, and can be one of the following classifications codes: GALAXY, QSO, or STAR. Note on SDSS_photzNN: Photometric redshift from the SDSS 'neural network' algorithm. Note on SDSS_photzRF: Photometric redshift from the SDSS 'random forest' algorithm. -------------------------------------------------------------------------------- References: Binggeli B., Popescu C.C., and Tammann G.A., 1993A&AS...98..275B The kinematics of the Virgo cluster revisited Binggeli B., Sandage A., and Tammann G.A., 1985AJ.....90.1681B Studies of the Virgo Cluster. II - A catalog of 2096 galaxies in the Virgo Cluster area Schlegel D.J., Finkbeiner D.P., Davis M., 1998ApJ...500..525S Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds ================================================================================ (End) Elysse Voyer [LAM, France] 13-May-2014