J/ApJ/872/42ivo://CDS.VizieR/J/ApJ/872/42doi:10.26093/cds/vizier.18720042CDSStrader J.Swihart S.Chomiuk L.Bahramian A.Britt C.Cheung C.C.,Dage K.Halpern J.Li K.-L.Mignani R.P.Orosz J.A.Peacock M.,Salinas R.Shishkovsky L.Tremou E.2020-10-12T12:53:08Z2020-08-12T12:43:36ZCDS support team

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

cds-question@unistra.frpulsarsradial-velocityvisible-astronomyspectroscopyinfrared-photometrybroad-band-photometryproper-motionsWe present the first optical spectroscopy of five confirmed (or strong candidate) redback millisecond pulsar binaries, obtaining complete radial velocity curves for each companion star. The properties of these millisecond pulsar binaries with low-mass, hydrogen-rich companions are discussed in the context of the 14 confirmed and 10 candidate field redbacks. We find that the neutron stars in redbacks have a median mass of 1.78+/-0.09M_{sun}_ with a dispersion of {sigma}=0.21+/-0.09. Neutron stars with masses in excess of 2M_{sun}_ are consistent with, but not firmly demanded by, current observations. Redback companions have median masses of 0.36+/-0.04M_{sun}_ with a scatter of {sigma}=0.15+/-0.04M_{sun}_, and a tail possibly extending up to 0.7-0.9M_{sun}_. Candidate redbacks tend to have higher companion masses than confirmed redbacks, suggesting a possible selection bias against the detection of radio pulsations in these more massive candidate systems. The distribution of companion masses between redbacks and the less massive black widows continues to be strongly bimodal, which is an important constraint on evolutionary models for these systems. Among redbacks, the median efficiency of converting the pulsar spin-down energy to {gamma}-ray luminosity is ~10%.2019ApJ...872...42Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/872/42CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/psr : ATNF Pulsar Catalogue (Manchester+, 2005)I/345 : Gaia DR2 (Gaia Collaboration, 2018)IX/57 : The Chandra Source Catalog (CSC), Release 2.0 (Evans+, 2019)J/ApJ/769/108 : Optical photometry of 4 millisecond pulsars (Breton+, 2013)J/ApJS/208/17 : 2nd Fermi LAT cat. of gamma-ray pulsars (2PC) (Abdo+, 2013)J/ApJS/218/23 : Fermi LAT third source catalog (3FGL) (Acero+, 2015)J/ApJ/820/8 : 3FGL sources statistical classifications (Saz Parkinson+, 2016)J/ApJ/831/89 : Eclipsing LMXB at 3FGL J0427.9-6704 center (Strader+, 2016)J/MNRAS/458/3341 : 42 ms pulsars high-precision timing (Desvignes+, 2016)J/ApJ/851/31 : 2FGL J0846.0+2820 opt. counterpart follow-up (Swihart+, 2017)J/ApJ/866/83 : Opt/NIR obs. of 1FGLJ1417.7-4407 (Swihart+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/872/42https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/872/42http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/872/42https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/872/42https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/872/42http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/872/42GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/872/42/sources (Observed and derived properties of confirmed and candidate redbacks (Tables 3 and 5))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/872/42/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/872/42/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/872/42/sources?GETtext/xml+votable180.050000true155.9486834580.6447241670.0055555555555555566/3234 5010 13035 14219 15030 17341 18985 21010 27223 28350 28846 30968 32115 33087 38511 40113 42812 43319 43330 43544 43632 43912 44540 459701.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/872/42?format=asciiOpticalInfraredRadiodefaultJ/ApJ/872/42/sourcesObserved and derived properties of confirmed and candidate redbacks (Tables 3 and 5)NameNamemeta.id;meta.maincharprimaryStateState (2)src.classcharONameOther name(s)meta.idcharf_OName[b] b: This association is uncertainmeta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNrvNumber of radial velocity measurements for this redback system (link to Table 1)meta.numberintnullableRAJ2000Hour of right ascension (J2000) (1)pos.eq.ra;meta.maine_RAJ2000RAs uncertainty (1)sstat.error;pos.eq.radoubleDEJ2000Degree of declination (J2000) (1)pos.eq.dec;meta.maine_DEJ2000DEs uncertainty (1)arcsecstat.error;pos.eq.decfloatPlx[-1.6/1.2]? Parallax {omega} (1)maspos.parallaxfloatnullablee_Plx[0.03/1.3]? Plx uncertaintymasstat.error;pos.parallaxfloatnullablepmRA[-18.8/20.2]? Proper motion along RA; {mu}_{alpha}_cos{delta} (1)maspos.pm;pos.eq.rafloatnullablee_pmRA[0.07/2]? pmRA uncertaintymasstat.error;pos.pm;pos.eq.rafloatnullablepmDE[-24/10.2]? Proper motion along DE; {mu}_{delta}_ (1)maspos.pm;pos.eq.decfloatnullablee_pmDE[0.05/3.5]? pmDE uncertaintymasstat.error;pos.pm;pos.eq.decfloatnullableGmag[14.3/20.9]? Gaia mean G-band magnitude (1)magphot.mag;em.optfloatnullablee_Gmag[0.001/0.08]? Gmag uncertaintymagstat.error;phot.magfloatnullablePer[0.15/8.14] Orbital perioddtime.perioddoublee_Per[2e-10/0.0005]? Per uncertaintydstat.errordoublenullabler_Per[2/33] Period references (3)meta.ref;pos.frameintK2[39.3/423]? Semi-amplitude K_2_ of the companion starkm/sphys.veloc;src.orbitalfloatnullablee_K2[0/1.5]? K2 uncertaintykm/sstat.errorfloatnullablegamma[-135/144]? Systemic velocity {gamma} of the binarykm/sphys.veloc;pos.heliocentricintnullablee_gamma[1/15]? gamma uncertaintykm/sstat.errorintnullableRef[10/43]? K2 and gamma references (3)meta.refintnullableU[-360/142]? U component of the galactocentric velocity (4)km/sphys.veloc;pos.cartesian.x;pos.galactocentricintnullablee_U[1/10]? U uncertaintykm/sstat.error;pos.cartesian.xintnullableV[-187/78]? V component of the galactocentric velocity (4)km/sphys.veloc;pos.cartesian.y;pos.galactocentricintnullablee_V[1/14]? V uncertaintykm/sstat.error;pos.cartesian.yintnullableW[-263/106]? W component of the galactocentric velocity (4)km/sphys.veloc;pos.cartesian.z;pos.galactocentricintnullablee_W[1/8]? W uncertaintykm/sstat.error;pos.cartesian.zintnullableVPVelocity Plotmeta.ref.urlcharLCBVI LC interactive plotmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/872/42/table1Modified Barycentric radial velocities of 5 redbacks (PSR J1048+2339, PSR J1431-4715, PSR J1622-0315, PSR J1628-3205, and 3FGL J2039.6-5618)RVel[-511/380] Radial velocitykm/sphys.veloc;pos.heliocentricfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharMBJD[57158.3/58223.3] Modified Barycentric Julian Date on the TDB systemdtime.epochdoublee_RVel[5/36] Uncertainty in RVelkm/sstat.error;spect.dopplerVelocfloatJ/ApJ/872/42/table2SMARTS photometry of PSR J1431-4715recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMBJD[58143.3/58328] Modified Barycentric Julian date of observationdtime.epochdoubleBand[BVI] Broadband filter used (B, V, or I)meta.code;instr.filtercharomag[17.17/18.41] Apparent (Vega) magnitude in Bandmagphot.magfloate_omag[0.015/0.09] The 1-sigma error in omagmagstat.error;phot.magfloat