J/A+A/665/A31ivo://CDS.VizieR/J/A+A/665/A31doi:10.26093/cds/vizier.36650031CDSFortin F.Garcia F.Chaty S.Chassande-Mottin E.Simaz Bunzel A.2024-09-13T06:59:34Z2022-09-07T08:42:14ZCDS support team

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

cds-question@unistra.frx-ray-binary-starsstellar-massesorbitsAll neutron star progenitors in neutron-star High-Mass X-ray Binaries (NS HMXBs) undergo a supernova event that may lead to a significant natal kick impacting the motion of the whole binary system. The space observatory Gaia performs a deep optical survey with exquisite astrometric accuracy, for both position and proper motions, that can be used to study natal kicks in NS HMXBs. We aim to survey the observed Galactic NS HMXB population and to quantify the magnitude of the kick imparted onto their NSs, and to highlight any possible differences arising in between the various HMXB types. We perform a census of Galactic NS HMXBs and cross-match existing detections in X-rays, optical and infrared with the Gaia Early Data Release 3 database. We retrieve their parallaxes, proper motions, and radial velocities (when available), and perform a selection based on the quality of the parallax measurement. We then compute their peculiar velocities with respect to the rotating reference frame of the Milky Way, and including their respective masses and periods, we estimate their kick velocities through Markov Chain Monte Carlo simulations of the orbit undergoing a supernova event. We infer the posterior kick distributions of 35 NS HMXBs. After an inconclusive attempt at characterising the kick distributions with Maxwellian statistics, we find that the observed NS kicks are best reproduced by a Gamma distribution of mean 116^+18^_-15_km/s. We note that supergiant systems tend to have higher kick velocities than Be High-Mass X-ray Binaries. The peculiar velocity versus non-degenerate companion mass plane hints at a similar trend, supergiant systems having a higher peculiar velocity independently of their companion mass.2022A&A...665A..31Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/665/A31CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/665/A31https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/665/A31http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/665/A31https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/665/A31https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/665/A31http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/665/A31GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/665/A31/table1 (Confirmed Galactic HMXBs observed by Gaia EDR3)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A31/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A31/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A31/table1?GETtext/xml+votable180.050000true9.290149261.36013560.0055555555555555566/1196 1310 1796 1965 3030 3035 3160 3308 3632 3687 3690 3728-3729 14057 14085 14251 14410 14437 14452 14632 14677 14805 15367 15476 15639 21690 22252 24325 24451 28809 28826 28853 28875 28925 29113 29162 29506 30239 30244 30256-30257 30400 30506 30598 30618-30619 30719 37342 37363 37367 37897 37906-37907 37921 37925 37936 38028 39238 39246 39376 39422 39886 39937 41596 41654 41662 41768 41812 41823 42163 42169 42174 42211 42228-42229 42464 43009 43020 43024https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/665/A31?format=asciiX-raydefaultJ/A+A/665/A31/table1Confirmed Galactic HMXBs observed by Gaia EDR3r_eReference for the eccentricitymeta.ref;pos.framecharGaiaEDR3Gaia EDR3 counterpart identification numbermeta.idSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainNameSource Namemeta.id;meta.maincharsubtypeHMXB subtype based on the spectral type (1)src.spTypecharSpTypeSpectral type of the companion starsrc.spTypecharr_SpTypeReference for the spectral typemeta.ref;pos.framecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintM2? Companion star masssolMassmeta.idfloatnullablee_M2? Error on companion star masssolMassstat.errorfloatnullabler_M2Reference for companion star massmeta.ref;pos.framecharPer? Orbital period of the binarydtime.perioddoublenullablee_Per? Error on the orbital perioddstat.errordoublenullabler_PerReference for the orbital periodmeta.ref;pos.framechare? Eccentricity of the binarysrc.orbital.eccentricitydoublenullablee_e? Error on the eccentricitystat.errordoublenullable