J/A+A/707/A50ivo://CDS.VizieR/J/A+A/707/A50doi:10.26093/cds/vizier/bc-p3/lfaCDSDincel B.Payli G.Yerli S.K.Ankay A.Neuhaeuser R.Mugrauer M.,Sheth S.Buder S.Huettel S.Edelmann F.Michel K-U.Baetz J.2026-02-27T20:00:57Z2026-02-25T09:38:59ZCDS support team

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

cds-question@unistra.frsupernova-remnantsspectroscopyvisible-astronomyThe secondaries of the massive binary systems can be found as runaway stars after being ejected due to the supernova (SN) of the more massive component. We search for such stars inside the supernova remnants (SNRs), where a recent SN is guaranteed to have happened, and the runaway star is expected to be nearby. In this paper, we present the massive runaway star HD 254577 as the pre-supernova binary companion to the progenitor of the supernova remnant IC 443 and the neutron star (NS) CXOU J61705.3+222127. We performed spectroscopic observations of the runaway star and specified its atmospheric parameters. We also used archival spectroscopic data on neighboring stars. Together with the precise Gaia DR3 astrometry and photometry, we identified the possible birth origin of the runaway star, and by isochrone fitting, we determined the progenitor mass. From the Gaia DR3 proper motions, we specified the possible explosion sites and calculated the neutron star (NS) velocity. HD 254577 is a hot and evolved star with an effective temperature of 24000+/-1000K (B0.5II) and a surface gravity of log(g[cm/s^2^])=2.75+/-0.25. It is probably a single star with a peculiar 3-D velocity of 31.3^+1.2^_-0.9_km/s, lying at a heliocentric distance of 1701^+55^_-54_pc. The cometary tail of the NS implies that it is moving away from the same site as the runaway star. From the flight trajectories, we calculated that the NS has typical pulsar velocities such as 254-539km/s at a distance of 1.7kpc for 10-20kyr ages. Together with the blue-only shifted interstellar medium lines on its spectrum, HD 254577 must be the pre-supernova binary companion to the progenitor of IC 443. By identifying the pre-supernova companion and the possible parent cluster, we showed that the progenitor zero-age main sequence mass is high: 31-64M_{sun}_, favoring the jet scenario previously proposed. The SNR distance is precisely determined as 1701^+55^_-54_pc. We also discuss the expansion dynamics of the SNR due to the highly off-centered explosion site. The pre-SN binary parameters that we calculated might not favor a strongly interacting binary.2026A&A...707A..50Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A50CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/279/541 : Sub-mm observations of SNR IC 443 (van Dishoeck+ 1993)J/ApJ/788/122 : IR photometry of YSO candidates toward SNR IC 443 (Su+, 2014)J/ApJ/897/83 : Component structure in the neighborhood of IC 443https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/707/A50https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/707/A50http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/707/A50https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/707/A50https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/707/A50http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/707/A50GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/707/A50/tablea1 (Possible cluster members within 10pc)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/707/A50/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/707/A50/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/707/A50/tablea1?GETtext/xml+votable180.050000true94.126947522.46998060.005555555555555556Cone search capability for table J/A+A/707/A50/tablea2 (Line strengths of SNR spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/707/A50/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/707/A50/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/707/A50/tablea2?GETtext/xml+votable180.050000true93.837416722.56391670.005555555555555556Cone search capability for table J/A+A/707/A50/tablea3 (Physical parameters of the SNR)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/707/A50/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/707/A50/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/707/A50/tablea3?GETtext/xml+votable180.050000true93.837416722.56391670.0055555555555555566/23993-23996 239981.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/707/A50?format=asciiOpticaldefaultJ/A+A/707/A50/tablea1Possible cluster members within 10pcrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 Source identifiermeta.id;meta.mainrgeoGaia DR3 median of the geometric distance posterior lower errorpcpos.distanceintE_rgeoGaia DR3 median of the geometric distance posterior upper errorpcstat.error;stat.maxinte_rgeoGaia DR3 median of the geometric distance posteriorpcstat.errorintplxGaia DR3 parallaxmagpos.parallax.trigfloate_plxGaia DR3 parallaxmagstat.error;pos.parallaxfloatGmagGaia DR3 G magnitudemagphot.mag;em.optfloate_GmagGaia DR3 G magnitudemagstat.error;phot.magfloatBP-RPGaia DR3 Bp-RP colour indexmagphot.color;em.opt.B;em.opt.Rfloate_BP-RPGaia DR3 Bp-RP colour index errormagstat.errorfloatpmRAGaia DR3 proper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloate_pmRAGaia DR3 proper motion along RA, pmRA*cosDE, errormas/yrstat.error;pos.pm;pos.eq.rafloatpmDEGaia DR3 proper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDEGaia DR3 proper motion along DE errormas/yrstat.error;pos.pm;pos.eq.decfloat_RAPositions from Gaia DR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia DR3 (declination part)degpos.eq.dec;meta.mainJ/A+A/707/A50/tablea2Line strengths of SNR spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFHb? H{beta} {lambda}4861 flux relative to FHa=100phot.flux;arith.ratiointnullablee_FHb? H{beta} {lambda}4861 flux relative to FHa=100 errorstat.errorintnullableF[OIII]4959? [OIII] {lambda}4959 flux relative to FHa=100phot.flux;arith.ratiointnullablee_F[OIII]4959? [OIII] {lambda}4959 flux relative to FHa=100 errorstat.errorintnullableF[OIII]5007? [OIII] {lambda}5007 flux relative to FHa=100phot.flux;arith.ratiointnullablee_F[OIII]5007? [OIII] {lambda}5007 flux relative to FHa=100 errorstat.errorintnullableF[NII]6548? [NII] {lambda}6548 flux relative to FHa=100phot.flux;arith.ratiointnullablee_F[NII]6548? [NII] {lambda}6548 flux relative to FHa=100 errorstat.errorintnullableFHa[100]? H{alpha} {lambda}6563 flux relative to FHa=100phot.flux;arith.ratiointnullablee_FHa? H{alpha} {lambda}6563 flux relative to FHa=100 errorstat.errorintnullableF[NII]6584? [NII] {lambda}6584 flux relative to FHa=100phot.flux;arith.ratiointnullablee_F[NII]6584? [NII] {lambda}6584 flux relative to FHa=100 errorstat.errorintnullableF[SII]6716? [SII] {lambda}6716 flux relative to FHa=100phot.flux;arith.ratiointnullablee_F[SII]6716? [SII] {lambda}6716 flux relative to FHa=100 errorstat.errorintnullableF[SII]6731? [SII] {lambda}6731 flux relative to FHa=100phot.flux;arith.ratiointnullablee_F[SII]6731? [SII] {lambda}6731 flux relative to FHa=100 errorstat.errorintnullableJ/A+A/707/A50/tablea3Physical parameters of the SNRe_[OIII]/Hb? Line ratio [OIII]/H{beta} errorstat.errorfloatnullableVs? Shock velocitykm/sphys.velocintnullableNH? Hydrogen column densitycm**-2phys.columnDensitydoublenullablee_NH? Hydrogen column density errorcm**-2stat.errordoublenullableE(B-V)? E(B-V) colour excessmagphot.color.excessfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.main[SII]/HaLine ratio [SII]/H{alpha}meta.id;meta.mainfloate_[SII]/HaLine ratio [SII]/H{alpha} errorstat.errorfloatNeElectron densitycm**-3phys.density;phys.electroninte_NeElectron density errorcm**-3stat.errorfloat[OIII]/Hb? Line ratio [OIII]/H{beta}meta.notefloatnullablee_E(B-V)? E(B-V) colour excess errormagstat.errorfloatnullableAv? Extinctionmagphys.absorptionfloatnullablee_Av? Extinction errormagstat.errorfloatnullable