J/A+A/391/641ivo://CDS.VizieR/J/A+A/391/641doi:10.26093/cds/vizier.33910641CDSEkmekci F.Karakus O.2002-09-01T15:43:14Z2002-09-01T15:43:04ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starsspectroscopyultraviolet-astronomyline-intensitiesThe IUE spectra of {sigma} Gem have been taken from the NASA IUE archive using IDL (Interactive Data Language). The spectra have been observed in 1979-1986 period. All the spectra analysed in the present study have NEWSIPS reductions and consist of 25 LWP, 8 LWR and 5 SWP images in high resolution, and 2 LWP and 14 SWP images in low dispersion. The emission lines, identified as activity indicators and originating in the chromosphere and transition region, are seen in the spectra. The emission line fluxes and equivalent widths are computed based on Gaussian profile fitting procedures to examine the existence of any line flux variation that depends on time or orbital phase. It was found that there is a flux variation with time and orbital phase that is in good agreement with the photometric light curve variation. By comparing the flux variation with simultaneous light curve variation, it can be shown that there is a relation between the ultraviolet flux variation and the spot activity of the system, as shown by Ayres et al. (1984ApJ...279..197A) and Engvold et al. (1988A&A...192..234E) based on their IUE (with IUESIPS reduction) spectral analysis. Moreover, it was inferred that there is no ultraviolet excess in {sigma} Gem by comparing the spectra of {beta} Gem taken as a comparison star. The Mg II h and k radial velocity curves of {sigma} Gem were in a good agreement with data obtained by Eker (1986MNRAS.221..947E) and Duemmler et al. (1997A&AS..123..209D).2002A&A...391..641Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/391/641CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/391/641https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/391/641http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/391/641https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/391/641https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/391/641http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/391/641GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVdefaultJ/A+A/391/641/table3aThe integrated line fluxes appeared in the low dispersion IUE spectra of sigma GemrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon designationphys.atmol.ionizationcharprimaryFSWP06872Flux on SWP06872 image1e-15W.m**-2phot.fluxfloate_FSWP06872rms uncertainty on FSWP068721e-15W.m**-2stat.errorfloatFSWP06873Flux on SWP06873 image1e-15W.m**-2phot.fluxfloate_FSWP06873rms uncertainty on FSWP068731e-15W.m**-2stat.errorfloatFSWP06899Flux on SWP06899 image1e-15W.m**-2phot.fluxfloate_FSWP06899rms uncertainty on FSWP068991e-15W.m**-2stat.errorfloatFSWP07265Flux on SWP07265 image1e-15W.m**-2phot.fluxfloate_FSWP07265rms uncertainty on FSWP072651e-15W.m**-2stat.errorfloatFSWP07970Flux on SWP07970 image1e-15W.m**-2phot.fluxfloate_FSWP07970rms uncertainty on FSWP079701e-15W.m**-2stat.errorfloatFSWP24090? Flux on SWP24090 image1e-15W.m**-2phot.fluxfloatnullablee_FSWP24090? rms uncertainty on FSWP240901e-15W.m**-2stat.errorfloatnullableFSWP24099? Flux on SWP24099 image1e-15W.m**-2phot.fluxfloatnullablee_FSWP24099? rms uncertainty on FSWP240991e-15W.m**-2stat.errorfloatnullableFSWP24100? Flux on SWP24100 image1e-15W.m**-2phot.fluxfloatnullablee_FSWP24100? rms uncertainty on FSWP241001e-15W.m**-2stat.errorfloatnullableFSWP24101? Flux on SWP24101 image1e-15W.m**-2phot.fluxfloatnullablee_FSWP24101? rms uncertainty on FSWP241011e-15W.m**-2stat.errorfloatnullableFSWP24171? Flux on SWP24171 image1e-15W.m**-2phot.fluxfloatnullablee_FSWP24171? rms uncertainty on FSWP241711e-15W.m**-2stat.errorfloatnullableFSWP24172? Flux on SWP24172 image1e-15W.m**-2phot.fluxfloatnullablee_FSWP24172? rms uncertainty on FSWP241721e-15W.m**-2stat.errorfloatnullableFSWP24173? Flux on SWP24173 image1e-15W.m**-2phot.fluxfloatnullablee_FSWP24173? rms uncertainty on FSWP241731e-15W.m**-2stat.errorfloatnullableFSWP24178? Flux on SWP24178 image1e-15W.m**-2phot.fluxfloatnullablee_FSWP24178? rms uncertainty on SWP241781e-15W.m**-2stat.errorfloatnullableFSWP24179? Flux on SWP24179 image1e-15W.m**-2phot.fluxfloatnullablee_FSWP24179? rms uncertainty on FSWP241791e-15W.m**-2stat.errorfloatnullableJ/A+A/391/641/table3bEquivalent widths of emission lines appeared in the low dispersion IUE spectra of sigma GemrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon designationphys.atmol.ionizationcharEW0.64A? Equivalent width on phase 0.640.1nmspect.line.eqWidthfloatnullablee_EW0.64A? rms uncertainty on EW0.64A0.1nmstat.errorfloatnullableEW0.64B? Equivalent width on phase 0.640.1nmspect.line.eqWidthfloatnullablee_EW0.64B? rms uncertainty on EW0.64B0.1nmstat.errorfloatnullableEW0.80? Equivalent width on phase 0.800.1nmspect.line.eqWidthfloatnullablee_EW0.80? rms uncertainty on EW0.800.1nmstat.errorfloatnullableEW0.95? Equivalent width on phase 0.950.1nmspect.line.eqWidthfloatnullablee_EW0.95? rms uncertainty on EW0.950.1nmstat.errorfloatnullableEW0.03? Equivalent width on phase 0.030.1nmspect.line.eqWidthfloatnullablee_EW0.03? rms uncertainty on EW0.030.1nmstat.errorfloatnullableEW0.13? Equivalent width on phase 0.130.1nmspect.line.eqWidthfloatnullablee_EW0.13? rms uncertainty on EW0.130.1nmstat.errorfloatnullableEW0.18A? Equivalent width on phase 0.180.1nmspect.line.eqWidthfloatnullablee_EW0.18A? rms uncertainty on EW0.18A0.1nmstat.errorfloatnullableEW0.18B? Equivalent width on phase 0.180.1nmspect.line.eqWidthfloatnullablee_EW0.18B? rms uncertainty on EW0.18B0.1nmstat.errorfloatnullableEW0.18C? Equivalent width on phase 0.180.1nmspect.line.eqWidthfloatnullablee_EW0.18C? rms uncertainty on EW0.18C0.1nmstat.errorfloatnullableEW0.78? Equivalent width on phase 0.780.1nmspect.line.eqWidthfloatnullablee_EW0.78? rms uncertainty on EW0.780.1nmstat.errorfloatnullableEW0.79A? Equivalent width on phase 0.790.1nmspect.line.eqWidthfloatnullablee_EW0.79A? rms uncertainty on EW0.79A0.1nmstat.errorfloatnullableEW0.79B? Equivalent width on phase 0.790.1nmspect.line.eqWidthfloatnullablee_EW0.79B? rms uncertainty on EW0.79B0.1nmstat.errorfloatnullableEW0.84A? Equivalent width on phase 0.840.1nmspect.line.eqWidthfloatnullablee_EW0.84A? rms uncertainty on EW0.84A0.1nmstat.errorfloatnullableEW0.84B? Equivalent width on phase 0.840.1nmspect.line.eqWidthfloatnullablee_EW0.84B? rms uncertainty on EW0.84B0.1nmstat.errorfloatnullableJ/A+A/391/641/mg2The integrated fluxes and equivalent widths of MgIIh(lambda 2803{AA}) and MgIIk(lambda 2796{AA}) lines, and the MgII radial velocities, deduced from high resolution IUE spectra of sigma Gem (tables 4, 5 and 7)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintImageImage designationmeta.id;meta.filecharIUElogdetails of IUE observations for this imagemeta.refcharJDJulian datedtime.epochdoublePhasePhasetime.phasefloatFMgIIhFlux of MgII h(lambda 2803) line1e-05W.m**-2phot.fluxfloate_FMgIIhrms uncertainty on FMgIIh1e-05W.m**-2stat.errorfloatEWMgIIhEquivalent width of MgII h(lambda 2803) line0.1nmspect.line.eqWidthfloate_EWMgIIhrms uncertainty on EWMgIIh0.1pmstat.errorfloatFMgIIk? Flux of MgII k(lambda 2796) line1e-05W.m**-2phot.fluxfloatnullablee_FMgIIk? rms uncertainty on FMgIIk1e-05W.m**-2stat.errorfloatnullableEWMgIIk? Equivalent width of MgII k(lambda 2796) line0.1nmspect.line.eqWidthfloatnullablee_EWMgIIk? rms uncertainty on EWMgIIk0.1pmstat.errorfloatnullableRV(MgIIh)? Radial velocity of MgII h linekm/sphys.veloc;pos.heliocentricfloatnullablee_RV(MgIIh)? rms uncertainty on RV(MgIIh)km/sstat.errorfloatnullableRV(MgIIk)? Radial velocity of MgII k linekm/sphys.veloc;pos.heliocentricfloatnullablee_RV(MgIIk)? rms uncertainty on RV(MgIIk)km/sstat.errorfloatnullableJ/A+A/391/641/table6Some integrated emission line fluxes of SWP high resolution IUE spectra of sigma GemrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon designationphys.atmol.ionizationcharLambdaWavelength of the ionnmem.wlfloatFSWP16943Flux on image SWP16943, at JD=2445099.86 (10.May.82), on phase 0.501e-15W.m**-2phot.fluxfloatFSWP16944Flux on image SWP16944, at JD=2445100.86 (11.May.82), on phase 0.551e-15W.m**-2phot.fluxfloatFSWP24078Flux on image SWP24078, at JD=2445973.13 (29.Sep.84), on phase 0.051e-15W.m**-2phot.fluxfloatFSWP24107Flux on image SWP24107, at JD=2445977.43 (03.Oct.84), on phase 0.281e-15W.m**-2phot.fluxfloatFSWP24124Flux on image SWP24124, at JD=2445979.41 (05.Oct.84), on phase 0.361e-15W.m**-2phot.fluxfloat