J/AJ/126/2209ivo://CDS.VizieR/J/AJ/126/2209doi:10.26093/cds/vizier.51262209CDSAnderson S.F.Voges W.Margon B.Trumper J.Agueros M.A.Boller T.,Collinge M.J.Homer L.Stinson G.Strauss M.A.Annis J.Gomez P.,Hall P.B.Nichol R.C.Richards G.T.Schneider D.P.Vanden Berk D.E.,Fan X.Ivezic Z.Munn J.A.Newberg H.J.Richmond M.W.Weinberg D.H.,Yanny B.Bahcall N.A.Brinkmann J.Fukugita M.York D.G.2023-04-06T16:50:58Z2005-04-29T22:01:01ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frx-ray-sourcesquasarsactive-galactic-nucleisurveysvisible-astronomysloan-photometryWe describe the initial results of a new program aimed to ultimately yield ~10^4^ fully characterized X-ray source identifications - a sample about an order of magnitude larger than earlier efforts. The technique is detailed and employs X-ray data from the ROSAT All-Sky Survey (RASS, Cat. <IX/10>, <IX/29>) and optical imaging and spectroscopic follow-up from the Sloan Digital Sky Survey (SDSS, <J/AJ/123/567>); these two surveys prove to be serendipitously very well matched in sensitivity. As part of the SDSS software pipelines, optical objects in the SDSS photometric catalogs are automatically positionally cross-correlated with RASS X-ray sources. Then priorities for follow-on SDSS optical spectra of candidate counterparts are automatically assigned using an algorithm based on the known ratios of fX/fopt for various classes of X-ray emitters at typical RASS fluxes of 10^-13^ergs/cm^2^/s. SDSS photometric parameters for optical morphology, magnitude, and colors, plus FIRST radio information, serve as proxies for object class.2003AJ....126.2209Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/126/2209CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000)J/AJ/123/567 : SDSS quasar catalog, I: Early Data Release (Schneider+, 2002)J/ApJ/596/437 : Stellar-mass black holes in the SDSS (Chisholm+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/126/2209https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/126/2209http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/126/2209https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/126/2209https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/126/2209http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/126/2209GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/126/2209/agn-bl (Observed and Derived Parameters of Broad-Line AGNs (tables 1 and 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/126/2209/agn-bl?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/126/2209/agn-bl?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/126/2209/agn-bl?GETtext/xml+votable180.050000true0.04983330.04033330.005555555555555556Cone search capability for table J/AJ/126/2209/agn-nl (Observed and Derived Parameters of AGNs having narrower permitted emission (tables 3 and 4))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/126/2209/agn-nl?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/126/2209/agn-nl?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/126/2209/agn-nl?GETtext/xml+votable180.050000true7.203208314.87119440.005555555555555556Cone search capability for table J/AJ/126/2209/bllac (Observed and Derived Parameters of BL Lac candidates (tables 5 and 6))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/126/2209/bllac?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/126/2209/bllac?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/126/2209/bllac?GETtext/xml+votable180.050000true8.811333315.25113890.0055555555555555565/1806 1821 1825 1870-1871 2401 2411 2485 2518 2526 2536 2545 2547 2837 2839 2865 2897 2899 2968 2980 4457 4517 4709 4940 5798 5802 6509 6512 6516 6556 6741 6743 6749 6758 6811 6/1 549 552 554 4096 4098 6137-6140 6363 6367 6385 6389-6391 6511 6521 6526-6530 6532 6534 6537-6538 6541-6543 6551 6553-6555 6557 6560 6562-6563 6565 6577 6595-6596 6599 6601 6603 6605 6607 6609-6611 6613-6618 6622-6623 6625 6628 6640 6644 7210-7211 7214-7215 7218-7219 7221-7223 7228 7230-7231 7246 7265-7266 7269-7270 7272-7274 7277 7279-7280 7282-7283 7289 7293 7295-7296 7304-7305 7309-7310 7312-7314 7317 7364-7365 7369 7371 7376-7377 7458 7464 7466-7467 7469 7478-7479 7502-7505 7507 7510-7511 7513-7516 7518-7519 7521-7526 7528 7530 7532 7536-7537 7540 7554 7557 7568 8192-8193 8195 8197 8205 8207-8209 8216 8225-8226 8230 8234 9601 9609 9611-9612 9614-9615 9633 9635-9637 9639 9641 9643 9648 9650 9845 9948-9950 9974 9979-9980 9982 9985-9989 9991 9993 10061 10063 10067 10084-10085 10087 10092 10094 10096 10120 10122-10123 10152-10154 10185 10192 10194 10200 10202 10209 10211 10213-10215 10217 10219 10221-10226 10232 10234 11344-11345 11374-11375 11380-11382 11386 11465 11467 11469 11472 11474 11481-11483 11491-11493 11495 11504 11507 11528 11530 11585-11587 11593 11600 11602 11608 11610 11617 11823 11825 11829-11832 11834-11836 11838-11839 11846-11847 11852 11854 11864 11876 11878 11880-11881 11884 11909 11911 11924-11925 11927 11930-11931 11935 11941 11943 11945-11948 11954 17663 17755 17763 17777 17807 17812-17814 17817 17819-17820 17822 17825-17827 17832 17834-17835 17842 17856 17858 17981 17983 18001 18004-18006 18008-18009 18011-18012 18020-18022 18025 18028 18033 18066-18067 18072 18074-18077 18082 18085 18089-18090 18092-18094 18096-18097 18112 18114 18176-18177 18302 18365 18367 18386 18402-18403 18406 18409-18410 18414 18751 18769-18770 18772 18774 18776 18780 18789 18794 18797-18798 18800 18831 18840 18843 19021-19023 19032 19034 19042 19047-19048 19052 19727 19732 19736 19738-19740 19752 19755-19757 19776 21849 21855 22715 23046-23048 23058 23060 23064 23073 23186-23187 23189-23190 23202-23203 23207 23234 25599 25850-25851 25853 25855 25919 25935 25939 25941 25943 25946-25948 25951 25955-25956 25961 25964-25965 25968 25972 25974 25977 25980 25998-25999 26001 26004 26008 26010-26011 26013-26014 26017 26019 26022-26023 26030 26034-26035 26041 26043-26044 26053 26055-26057 26063 26070-26074 26080 26083 26096 26143 26164-26165 26167 26178 26181 26183 26186-26188 26190-26191 26195 26198 26203 26209-26210 26212-26213 26217 26223 26228-26229 26233 26236 26238 26241 26243 26245 26247 26255 26257-26259 26267 26275 26277-26279 26281-26282 26285 26287 26289 26310 26321-26322 26370 26373 26375 26381 26879 26941-26942 26957 26959 26971 26977 26981 26983 26985-26988 26992 26995 27001-27006 27021 27023 27026-27027 27029-27031 27043 27046-27049 27053 27057 27064 27067 27072 27077 27088 27223 27227 27230 27235-27236 27238-27239 27243 27249 27253 27258 27281 27285-27286 27289-27291 27293 27297 27300 27302 27306-27307 27310 27312 27315-27316 27319 27321 27329 27334 27336-27338 27648-27650 27653-27654 27656-27657 27659 27662 27666 27680-27681 31338 31355 31375 31381-31385 31387 31397-31399 31401 31404 31408 31415 31429-31430 31434 31436 31440 31456 36703 36719 36729 36733 36759 36763-36765 36775 36777 36781-36784 36786 36788 36792 36816 45055 49092 49095 49104 491062.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/126/2209?format=asciiX-rayOpticaldefaultJ/AJ/126/2209/agn-blObserved and Derived Parameters of Broad-Line AGNs (tables 1 and 2)OTypeOptical morphology (2)intrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intRASSRASS X-ray source name (1)charSDSSSDSS optical counterpart name (1)charu*magThe SDSS u* band PSF magnitudemagfloatg*magThe SDSS g* band PSF magnitudemagfloatr*magThe SDSS r* band PSF magnitudemagfloati*magThe SDSS i* band PSF magnitudemagfloatz*magThe SDSS z* band PSF magnitudemagfloatz? Redshift from the SDSS spectrafloatnullableCRateRASS 0.1-2.4keV count ratect/sfloatExpRASS exposure timesintHR1RASS hardness ratio 1 (3)floatHR2RASS hardness ratio 2 (4)floatDetectSource detection likelihoodintFXRASS absorbed 0.1-2.4keV flux in units of 10^-13^erg/s/cm^2^1e-16W.m**-2floatg*0magThe SDSS g*_0_ band PSF magnitude (2)magfloatFXcorRASS absorbed 0.1-2.4keV flux (3)1e-13mW.m**-2floatlogLX? Log of broadband 0.1-2.4kev X-ray luminosity in units of erg/s (4)log(1e-07W)floatnullableLogL2500? Log of monochromatic optical luminosity at 2500 Angstroms in units of erg/s/Hz (4)log(1e-07W.Hz**-1)floatnullableLogL2kev? Log of monochromatic X-ray luminosity at 2kev in units of erg/s/Hz (4)log(1e-07W.Hz**-1)floatnullablealphaoxSlope of a hypothetical power law from 2500{AA} to 2keVfloatComAdditional commentschar_RAPosition (derived from SDSS name) (right ascension part)degpos.eq.ra;meta.main_DEPosition (derived from SDSS name) (declination part)degpos.eq.dec;meta.mainJ/AJ/126/2209/agn-nlObserved and Derived Parameters of AGNs having narrower permitted emission (tables 3 and 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.intRASSRASS X-ray source name (1)charSDSSSDSS optical counterpart name (1)charu*magThe SDSS u* band PSF magnitudemagfloatg*magThe SDSS g* band PSF magnitudemagfloatr*magThe SDSS r* band PSF magnitudemagfloati*magThe SDSS i* band PSF magnitudemagfloatz*magThe SDSS z* band PSF magnitudemagfloatOTypeOptical morphology (2)intz? Redshift from the SDSS spectrafloatnullableCRateRASS 0.1-2.4keV count ratect/sfloatExpRASS exposure timesintHR1RASS hardness ratio 1 (3)floatHR2RASS hardness ratio 2 (4)floatDetectSource detection likelihoodintFXRASS absorbed 0.1-2.4keV flux in units of 10^-13^erg/s/cm^2^1e-16W.m**-2floatg*0magThe SDSS g*_0_ band PSF magnitude (2)magfloatFXcorRASS absorbed 0.1-2.4keV flux (3)1e-13mW.m**-2floatlogLX? Log of broadband 0.1-2.4kev X-ray luminosity in units of erg/s (4)log(1e-07W)floatnullableLogL2500? Log of monochromatic optical luminosity at 2500 Angstroms in units of erg/s/Hz (4)log(1e-07W.Hz**-1)floatnullableLogL2kev? Log of monochromatic X-ray luminosity at 2kev in units of erg/s/Hz (4)log(1e-07W.Hz**-1)floatnullablealphaoxSlope of a hypothetical power law from 2500{AA} to 2keVfloatComAdditional commentschar_RAPosition (derived from SDSS name) (right ascension part)degpos.eq.ra;meta.main_DEPosition (derived from SDSS name) (declination part)degpos.eq.dec;meta.mainJ/AJ/126/2209/bllacObserved and Derived Parameters of BL Lac candidates (tables 5 and 6)ComAdditional commentscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intRASSRASS X-ray source name (1)charSDSSSDSS optical counterpart name (1)charu*magThe SDSS u* band PSF magnitudemagfloatg*magThe SDSS g* band PSF magnitudemagfloatr*magThe SDSS r* band PSF magnitudemagfloati*magThe SDSS i* band PSF magnitudemagfloatz*magThe SDSS z* band PSF magnitudemagfloatOTypeOptical morphology (2)intz? Redshift from the SDSS spectrafloatnullableCRateRASS 0.1-2.4keV count ratect/sfloatExpRASS exposure timesintHR1RASS hardness ratio 1 (3)floatHR2RASS hardness ratio 2 (4)floatDetectSource detection likelihoodintFXRASS absorbed 0.1-2.4keV flux in units of 10^-13^erg/s/cm^2^1e-16W.m**-2floatg*0magThe SDSS g*_0_ band PSF magnitude (2)magfloatFXcorRASS absorbed 0.1-2.4keV flux (3)1e-13mW.m**-2floatlogLX? Log of broadband 0.1-2.4kev X-ray luminosity in units of erg/s (4)log(1e-07W)floatnullableLogL2500? Log of monochromatic optical luminosity at 2500 Angstroms in units of erg/s/Hz (4)log(1e-07W.Hz**-1)floatnullableLogL2kev? Log of monochromatic X-ray luminosity at 2kev in units of erg/s/Hz (4)log(1e-07W.Hz**-1)floatnullablealphaoxSlope of a hypothetical power law from 2500{AA} to 2keVfloat_RAPosition (derived from SDSS name) (right ascension part)degpos.eq.ra;meta.main_DEPosition (derived from SDSS name) (declination part)degpos.eq.dec;meta.main