5 QPE X-ray sources spectraJ/A+A/659/L2ivo://CDS.VizieR/J/A+A/659/L2doi:10.26093/cds/vizier.36599002CDSWevers T.Pasham D.R.Jalan P.Rakshit S.Arcodia R.2022-09-05T14:31:22Z2022-02-25T08:23:29ZCDS support team
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
cds-question@unistra.frquasarsx-ray-sourcesspectroscopyWe perform a systematic study of the five known QPE host galaxies with the aim of providing new insights into their nature. We analyse new and archival medium resolution optical spectroscopy of the QPE hosts. We measure emission (and absorption) line fluxes, their ratios and equivalent widths (EWs), to locate the QPE hosts on diagnostic diagrams. We also measure the velocity dispersion of the stellar absorption lines to estimate their black hole masses. All QPE host galaxies show emission lines in their optical spectra. Based on their ratios and EWs, we find evidence for the presence of an active galactic nucleus in all sources, including those previously reported as passive. We measure velocity dispersions between 36 and 90km/s, implying the presence of low mass (10^5-6.7^ solar masses) black holes, consistent with literature findings. Finally, we find a significant over-representation (2/5 sources, or a factor of 13^+13^_-10_ quiescent Balmer strong (post-starburst) galaxies among QPE hosts.2022A&A...659L...2Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/659/L2CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/659/L2https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/659/L2http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/659/L2https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/659/L2https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/659/L2http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/659/L2GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapAssociated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/659/L2X-raydefaultJ/A+A/659/L2/gsn069GSN 69 continuum-normalised spectrumrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength array of the spectrum0.1nmem.wldoubleFluxTemplate subtracted fluxphot.fluxdoublee_FluxUncertainty on template subtracted fluxstat.error;phot.fluxdouble
J/A+A/659/L2/ero-qpe1eRO-QPE1 continuum-normalised spectrumrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength array of the spectrum0.1nmem.wldoubleFluxTemplate subtracted fluxphot.fluxdoublee_FluxUncertainty on template subtracted fluxstat.error;phot.fluxdouble
J/A+A/659/L2/ero-qpe2eRO-QPE2 continuum-normalised spectrumrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength array of the spectrum0.1nmem.wldoubleFluxTemplate subtracted fluxphot.fluxdoublee_FluxUncertainty on template subtracted fluxstat.error;phot.fluxdouble
J/A+A/659/L2/rxj1301RX J1301.9+2746 continuum-normalised spectrumrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength array of the spectrum0.1nmem.wldoubleFluxTemplate subtracted fluxphot.fluxdoublee_FluxUncertainty on template subtracted fluxstat.error;phot.fluxdouble
J/A+A/659/L2/j02492MASX J02491731-0412521 continuum-normalised spectrumrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength array of the spectrum0.1nmem.wldoubleFluxContinuum normalised fluxphot.fluxdoublee_FluxUncertainty on template subtracted fluxstat.error;phot.fluxdouble
J/A+A/659/L2/listList of fits spectraNz? Number of spectrameta.numberintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintObs.dateObservation datestime.epoch;obsnullablesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS file (1)meta.title;meta.fitschar