IPCLXLBOL ivo://nasa.heasarc/ipclxlbol NASA/GSFC HEASARC Chlebowski, Harnden, Sciortino 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Star Soft X-ray (0.2 - 3.5 keV) measurements for all normal, massive, o-type stars surveyed with the Einstein Observatory are presented as a catalog containing 89 detections and 176 upper bounds, together with a detailed discussion of the reduction process. Values of L[x]/L[bol] listed for most stars, range from 10e-5.44 to 10e-7.35; l[x] spans more than 3 orders of magnitude, ranging from 1.5 x 10e31 to 2 x 10e34 ergs se-1. It is noted that at least 30% of o-type stars are variable in X-rays, but that there is little evidence for new objects whose X-ray emission might be significantly enhanced by accretion processes onto a neutron star. For further information, please contact the HEASARC. This is a service provided by NASA HEASARC . 1989ApJ...341..427C https://heasarc.gsfc.nasa.gov/W3Browse/all/ipclxlbol.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=ipclxlbol& GET text/xml 180 99999 true 172.794153159191 -65.7426324824406 0.0333333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=ipclxlbol GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_ipclxlbol&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.0333333333333333 X-ray public ipclxlbol Einstein LX & LBL Values for IPC O Stars name Designation number meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable bolmag M[bol] float nullable lxlb Log of X-ray to Bol luminosity float nullable lxlb_error Error for LXLB float nullable class Browse Object Classification src.class short nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable lxlb_flag Flag of LXLB char nullable vmag Photographic Magnitude phot.mag;em.opt.V float nullable distance_flag References for Distance char nullable type_flag References for Spectral Type char nullable pos_ref Reference Source for Position char nullable bv_color BV Photometry phot.color;em.opt.B;em.opt.V float nullable bii Galactic Latitude degree pos.galactic.lat double nullable alt_name HD or BD Numbers meta.id char nullable spect_type Spectral Type src.spType char nullable note Note flag char nullable nh N[H] 10^21_atoms/cm^2 phys.columnDensity float nullable "distance" Stellar Distance kpc pos.distance float nullable lx_error LX Error float nullable lii Galactic Longitude degree pos.galactic.lon double nullable lx_flag Flag for LX char nullable nh_ref References for NH char nullable lx Log of X-ray Luminosity (in erg/s) float nullable alt_name_2 Other Identifiers meta.id char nullable