TRIFIDCXO - Trifid Nebula (M 20) Chandra X-Ray Point Source Catalog
Chandra observation of the Trifid nebula: X-ray emission from the O star complex and actively forming pre-main-sequence stars. Rho J., Ramirez S.V., Corcoran M.F., Hamaguchi K., Lefloch B. <Astrophys. J., 607, 904-912 (2004)> =2004ApJ...607..904R
The X-ray source name using the prefix 'CXOM20 J' for Chandra X-ray Observatory, the target (M 20), and the J2000 equatorial coordinates of the source.
An alternative name for the X-ray source, using the prefix 'RRC2004 ' (Rho, Ramirez, Corcoran 2004) and the source number of the X-ray source.
An X-ray source number in order of increasing J2000 Right Ascension.
The preliminary source identification number derived from the wavelet analysis tool (wavdetect). This was run using an exposure map and it produced a catalog of 354 sources from the entire ACIS-I 17' by 17' field of view (FOV). The authors then identified spurious sources due to cosmic rays or to cases where the source counts were less than the background counts, and rejected 50 of these sources, leading to their final catalog of 304 sources contained in the present table.
The Right Ascension of the X-ray source in the selected equinox. This was given in J2000 coordinates to a precision of 0.01 seconds of time in the originating table.
The Declination of the X-ray source in the selected equinox. This was given in J2000 coordinates to a precision of 0.1 arcseconds in the originating table.
The Galactic Longitude of the X-ray source.
The Galactic Latitude of the X-ray source.
The net count rate in the 0.5-8.0 keV band of the X-ray source, in counts per second, derived from the wavelet analysis.
The uncertainty in the X-ray source count rate, in counts per second.
The signal-to-noise ratio of the X-ray source detection.
The X-ray source spectral hardness ratio HR between the counts in the soft (0.5-2.0) keV and hard (2.0-8.0 keV) energy bands, S and H, respectively, defined by the relation HR =(H-S)/(H+S).
The uncertainty in the X-ray spectral hardness ratio, HR.