J/MNRAS/274/1194ivo://CDS.VizieR/J/MNRAS/274/1194doi:10.26093/cds/vizier.72741194CDSMason K.O.Hassall B.J.M.Bromage G.E.Buckley D.A.H.Naylor T.,O'Donoghue D.Watson M.G.Bertram D.Branduardi-Raymont G.,Charles P.A.Cooke B.Elliott K.H.Hawkins M.R.S.Hodgkin S.T.,Jewell S.J.Jomaron C.M.Sekiguchi K.Kellett B.J.Lawrence A.,McHardy I.Mittaz J.P.D.Pike C.D.Ponman T.J.Schmitt J.,Voges W.Wargau W.Wonnacott D.2024-06-24T20:14:32Z2008-05-13T21:15:31ZCDS support team

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

cds-question@unistra.frx-ray-sourcesultraviolet-sourcesOptical identifications for 195 EUV sources located in the ROSAT Wide Field Camera all-Sky survey are presented. We list 69 previous unknown EUV-emitting white dwarfs, 114 active stars, 7 new magnetic cataclysmic variables and 5 active galaxies. Several of the white dwarfs have resolved M-type companions, while five are unresolved white dwarf/M-star pairs. Finding charts are given for the optical counterparts.1995MNRAS.274.1194Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/274/1194CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/260/77 : ROSAT Wide Field Camera EUV Bright Sources (Pounds+ 1993)J/MNRAS/274/1165 : The 2RE Source Catalogue (Pye+ 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/274/1194https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/274/1194http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/274/1194https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/274/1194https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/274/1194http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/274/1194GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/274/1194/table1 (WFC optical identification programme ID summary)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/274/1194/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/274/1194/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/274/1194/table1?GETtext/xml+votable180.050000true0.993916743.60058330.005555555555555556ROSAT6/447 493 674 861 1185 1603 1657 1762 2574 2585 2734 3109 3204 3343 3566 3986 4158 4190 4808 5108 5367 5752 5936 5941 6040 6160 6169 6274 6384 6410 6879 7561 7928 8155 9194 9614 9962 10246 10265 11112 11400 11514 11612 11621 11697 11813 11973 12088 12092 12228 12908 13133 13440 13670 14208 14476 14654 15169 15267 15287 15355 15686 15861 16614 16707 19541 19543 20494 20505 20507 20701 20716 20760 20922 21050 21082 21386 21416 21501 21736 21885 22051 22066 22100 22146 22148 22459 22485 22491 22513 22749 22846 22856-22857 22908 23140 23346 23388 23523 23564 23678 23731 23885 23895 23964 24276 26107 26426 26668 26851 26924 27689 27833 27855 27872 28041 28152 28234 28384 28561 28982 30167 30878 31666 32063 32147 32257 32617 33691 33694 33815 33872 33937 34074 34097 34163 34197 34266 34398 34464 34652 34676 34680 34822 35690 36836 37041 37096 37419 37427 37808 38325 38804 39390 39464 39523 39612 39825 39880 39954 40264 40356 40408 40466 40699 40904 40944 41283 41465 41981 42216 42601 42701 42751 44363 45382 45419 45580 45782 45909 45962 46180 46281 46385 46612 46700 47002 47011 47496 48163 48516 48905 49112-49113https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/274/1194?format=asciiX-rayEUVdefaultJ/MNRAS/274/1194/table1WFC optical identification programme ID summaryu_EWHbUncertainty flag on EWHbmeta.code.errorcharX[y] y: there is an X-ray telescope position available for the sourcemeta.notecharNote[+] +: additional information in appena filemeta.notecharComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.idcharl_S1Limit flag on S1meta.code.errorcharS1? WFC survey filter S1 (60-140A) countsct/ksphot.count;em.X-rayfloatnullablel_S2Limit flag on S2meta.code.errorcharS2? WFC survey filter S2 (110-200A) countsct/ksphot.count;em.X-rayfloatnullableNH? Galactic Hydrogen column density1e+20cm**-2phys.columnDensityfloatnullableRAJ2000Right ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainn_DEJ2000[g:] A 'g' indicates that the data are from the Hubble Space Telescope Guide Star Catalogmeta.notecharVmag? V magnitude of the optical counterpartmagphot.mag;em.opt.VfloatnullableVmag2? Upper limit of Vmag when n_Vmag2='-'magphot.mag;em.opt.Vfloatnullableu_VmagUncertainty flag on Vmagmeta.code.errorcharn_VmagNote on Vmag (1)meta.notecharB-V? B-V color index of the optical counterpartmagphot.color;em.opt.B;em.opt.VfloatnullableSpTypeSpectral type of the optical counterpartsrc.spTypecharl_alphaLimit flag on alphameta.code.error;pos.eq.racharalpha? Source apparent EUV to optical flux ratiophot.flux;arith.ratiofloatnullableClassIdentification class (2)src.classcharEWCa? Equivalent width of the Ca H 3933A chromospheric emission line (for stars only)0.1nmspect.line.eqWidthfloatnullablen_EWCa[u-] Note on EWCa (3)meta.notecharEWHa? Equivalent width of the Halpha line (for stars only)0.1nmspect.line.eqWidthfloatnullablen_EWHa[?u-] Note on EWHa (3)meta.notecharFWHb? Full width at half maximum of the Hbeta line1000km.s**-1spect.line.widthfloatnullableEWHb? Equivalent width of the Hbeta line0.1nmspect.line.eqWidthfloatnullable