MCHMXRB ivo://nasa.heasarc/maghmxbcat NASA/GSFC HEASARC Liu et al. 2026-04-03 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Star XRB This database table contains a catalog of high-mass X-ray binaries (HMXBs) in the Small and Large Magellanic Clouds (SMC and LMC). The catalog lists source name(s), coordinates, apparent magnitudes, orbital parameters, and X-ray luminosities for 128 HMXBs, together with the stellar parameters of the components, other characteristic properties and a comprehensive selection of the relevant literature. The aim of this catalog is to provide easy access to the basic information on the X-ray sources and their counterparts in other wavelength ranges (UV, optical, IR, radio). Most of the sources have been identified as Be/X-ray binaries. Some sources, however, are only tentatively identified as HMXBs on the basis of a transient character and/or a hard X-ray spectrum. Further identification in other wavelength bands is needed to finally determine the nature of these sources. In cases where there is some doubt about the high-mass nature of the X-ray binary this is mentioned. Literature published before 1 May 2005 has, as far as possible, been taken into account. Information on the numbers used to code references is available at <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/442/1135/refs.dat">CDS</a>. Individual notes on each HMXB are also available for <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/442/1135/notes1.dat">SMC systems</a> and for <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/442/1135/notes2.dat">LMC systems</a> at the same site. This Browse table contains the combination of 92 HMXBs in the SMC and 36 HMXBs in the LMC which were listed in Tables 1 and 2, respectively, of the published version of this catalog. The HEASARC has added a parameter called cloud_id which can be used to identify which Magellanic Cloud any specified HMXB belongs to (the SMC or the LMC). This database was created by the HEASARC in December 2005 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/442/1135">CDS Catalog J/A+A/442/1135</a>, table1.dat and table2.dat. This is a service provided by NASA HEASARC . 2005A&A...442.1135L https://heasarc.gsfc.nasa.gov/W3Browse/all/maghmxbcat.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=maghmxbcat& GET text/xml 180 99999 true 17.3125 -74.74444444 0.5 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=maghmxbcat GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_maghmxbcat&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.5 X-ray public maghmxbcat Magellanic Clouds High-Mass X-Ray Binaries Catalog porb_flag Uncertainty Flag for Orbital Period meta.code.qual;time.period char nullable ref_photometry References for UBV Photometry meta.ref;phot char nullable alt_name Other Designation meta.id char nullable bmag B Magnitude mag phot.mag;em.opt.V double nullable pulse_period Pulse Period for X-Ray Pulsars s time.period double nullable optical_name1 Optical Counterpart Designation meta.id char nullable bv_color B-V Color Index mag phot.color;em.opt.B;em.opt.V double nullable vmag V Magnitude mag phot.mag;em.opt.V double nullable porb Orbital Period (days) d time.period double nullable reddening Interstellar Reddening mag phot.color.excess double nullable "__row" System index column char nullable dec Declination degree pos.eq.dec;meta.main double nullable fx_max Upper Limit of X-Ray Flux When Interval (microJy) microJy phot.flux.density;em.X-ray double nullable ref_fx References for X-Ray Flux meta.ref;phot.flux.density;em.X-ray char nullable ref_period References for Pulse Period meta.ref;time.period char nullable rmag R Magnitude mag phot.mag;em.opt.R double nullable cloud_id Specifies Which Magellanic Cloud meta.id char nullable class Browse Object Classification src.class short nullable fx_limit Limit Flag for X-Ray Flux meta.code;phot.flux.density;em.X-ray char nullable fx_range Energy Range for Flux If Not 2-20keV instr.bandwidth;em.X-ray char nullable ref_chart Reference for Optical Counterpart (Finding Charts) meta.bib;pos char nullable spect_type MK Spectral Index src.spType char nullable fx Average X-Ray Flux (microJy) microJy phot.flux.density;em.X-ray.medium double nullable optical_name2 Second Optical Counterpart Designation meta.id char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable vmag_min Upper Limit of V Magnitude When Interval mag phot.mag;em.opt.V;stat.min double nullable "__x_ra_dec" System unit vector column double nullable ub_color U-B Color Index mag phot.color;em.opt.U;em.opt.B double nullable reddening_max Upper Limit of Interstellar Reddening When Interval mag phot.color.excess;stat.max double nullable lii Galactic Longitude degree pos.galactic.lon double nullable vmag_flag Limit Flag for V Magnitude meta.code;phot.mag;em.opt.V char nullable "__z_ra_dec" System unit vector column double nullable xray_type Source Type src.class char nullable name Source Designation meta.id;meta.main char nullable "__y_ra_dec" System unit vector column double nullable bii Galactic Latitude degree pos.galactic.lat double nullable