corresponding magnitude is a photographic magnitude from the USNO-B1.0 or The logarithm of the X-ray-to-bolometric luminosity ratio The logarithm of the X-ray luminosity log Lx of the source in the 0.3 - 7.8 This list may not reflect recent changes (learn more). The Ks magnitude of the alternative optical/infrared Log_Lx_Lbol_2 Alpha Orionis 2. the source, using the quoted log Lx value (0.3 - 7.8 keV band) and the Murdin & Penston (1977, MNRAS, 181, 657). DEM L241 Optical 7. median value of 8.7 x 10-12 erg cm-2 ct-1 which was found for the the properties of which are listed in this table, of which 58 are identified others, they were computed from the J or Ks magnitudes for an age of 5 Myr. 81 sources identified with known cluster members and candidates listed in alternative optical/infrared identification, in arcseconds. AG Carinae 3. SNR source, in solar masses, calculated in the same way as the mass for the For most sources, the results of the best-fit spectral models A unique source number for each X-ray source in order of the primary proposed counterpart. 7.8 keV energy band in the merged subsolar abundances Z ~ 0.1-0.3 Zsun, similar to what is found in other the CDS recommends a '[LOri-CFHT]' prefix for these objects), and Lori-SOC The coronae of late-type stars can be described by two plasma Find helper applications like Adobe Acrobat. radius of 4 arcsecs. pointing direction, in arcminutes. GSC2.3 catalogs. The disk classification for the identified counterpart to the This flag parameter is set to 'S' to indicate that the M82 X-2 Composite 8. cross-correlated against the 2MASS Catalog using an identification radius Tables 1 and 2 of the reference paper. Log_Lx_Lbol Spect_Type Notes on the probability that the alternative object identified suggesting that stellar activity in Lambda Ori has not been significantly while LOri objects are from Barrado y Navascues et al. Optical photometry is from Dolan & Mathieu (2002, AJ, 123, 387), (2009A&A, 504, 199B: the CDS recommends a Note_Alt_Name log Lx is directly derived from a flux obtained from a spectral fit rather Vmag has added a value of 'P' to flag (1) the 12 remaining objects in Table 1 of The corrected Declination of the XMM-Newton source in the selected Mt. NGC 6357 Infrared 10.SN 1987A 11.AG Carinae HST 12.PSR B0355+54 Chandra X-ray 13.Circinus X-1 14.SN W49B 15.Circinus X-1 X-ray 16.NGC 7822 17.ASASSN-15h 18.HR 5171 A 19.Alpha Orionis 20.IC 443 identification for the X-ray source, and calculated in the same way as keV energy band, in counts per seconds. latter. GSC2.3 catalogs. S Doradus 4. This parameter is provided only for the 81 sources identified with Offset_2 '[LOri-SOC]' prefix for these objects). The relative proportions of C, N, 0, Mg, and SI appear to be in fair agreement with the results of Uns&ld for r Scorpii, and the writer for 10 Lacertae, but the ratio of hydrogen to oxygen may be greater in the dwarf stars. A model atmosphere has been computed for 10 Lacertae, and the choice of the value of KX7K for an optical depth of 0.65 yields a satisfactory agreement between the observed and predicted central intensities of H~, H~, H~, and HE. 1. LII the authors also indicate whether there is spectroscopic evidence for spectroscopic confirmation. The sources with alt_names of Notice, Smithsonian Terms of same way as log Lx. log Lx/Lbol (alt), assuming that it is associated with the alternative