NGC6334CXO - NGC 6334 Chandra X-Ray Point Source Catalog
Stellar Clusters in the NGC 6334 Star-Forming Complex Feigelson E.D., Martin A.L., McNeill C.J., Broos, P.B., Garmire, G.P. <Astr. J. 138, 227 (2009)> =2009AJ....138..227F
A running X-ray source number in order of increasing J2000.0 Right Ascension.
An alternative name for the catalogued X-ray source based on the '[FMM2009]' prefix (for Feigelson, Martin, McNeill 2009) and the X-ray source number (this was created by the HEASARC in anticipation of its recommendation by the CDS Dictionary of Nomenclature of Celestial Objects).
The IAU-style X-ray source designation using the standard 'CXOU' prefix for Chandra sources, and the J2000.0 coordinates, e.g., 'CXOU JHHMMSS.ss+DDMMSS.s'. Notice that these designations are given to higher precision than the current standard CDS-recommended naming convention for such sources, viz., e.g., 'CXOU JHHMMSS.s+DDMMSS'.
The Right Ascension of the X-ray source in the selected equinox. This was given in J2000.0 decimal degree coordinates to a precision of 10-6 degrees in the original table.
The Declination of the X-ray source in the selected equinox. This was given in J2000.0 decimal degree coordinates to a precision of 10-6 degrees in the original table.
The Galactic Longitude of the X-ray source.
The Galactic Latitude of the X-ray source.
The estimated 1-sigma random position error, in arcseconds. This was computed as (sigmax2 + sigmay2). The single-axis position errors, sigmax and sigmay, were estimated from the single-axis standard deviations of the PSF inside the extraction region and the number of counts extracted.
The off-axis angle of the X-ray source from the nominal pointing direction, in arcminutes.
The estimated net counts from the extraction area for the X-ray source, in the total energy band (0.5 - 8.0 keV).
The average of the Poisson upper and lower 1-sigma error in the X-ray source net counts (including the background contribution).
The estimated background counts from the extraction area for the X-ray source in the total energy band (0.5 - 8.0 keV).
The estimated net counts from the extraction area for the X-ray source in the hard energy band (2.0 - 8.0 keV).
The fraction of the point-spread function (PSF) at the fiducial energy of 1.497 keV that is enclosed within the extraction area for the X-ray source. Note that a reduced PSF fraction (significantly below 90%) may indicate that the source is in a crowded region or on the edge of the field.
This flag parameter is set to '<' if the quoted background probability is an upper limit.
The logarithm of the probability that the extracted total-band (0.5 - 8 keV) counts are solely from fluctuations in the local background, based on Poisson statistics.
The background-corrected median photon energy for the photons from the X-ray source in the total band, in keV.
This flag is set to '>' to indicate that the source was detected in the J or H bands in the 2MASS Point Source Catalog, but not in the Ks band.
The 2MASS Ks band magnitude of an infrared counterpart within 1 arcsecond of the X-ray source position.
This flag is set to ':' to indicate that the Ks magnitude is affected by photometric confusion by a nearby star or by nebular emission, or that the photometric accuracy is worse than +/- 0.2 magnitudes.
The name(s) of possible counterparts within 3 arcseconds of the X-ray source in the SIMBAD database of published objects. FIR-V sources are from Straw & Hyland (1989, ApJ, 340, 318), TPR stars are from Tapia et al. (1996, A&A, 316, 102), and other designations are discussed in the text of the reference paper.