TRIFIDCXO ivo://nasa.heasarc/trifidcxo NASA/GSFC HEASARC Rho et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains a list of the Trifid Nebula (M 20) X-Ray point sources detected by the Chandra X-ray Observatory (CXO) in an observation carried out on 2002 June 13. The Trifid Nebula, a young star-forming H II region, was observed for 16 hr by the Advanced CCD Imaging Spectrometer imaging array, ACIS-I, detector. 304 X-ray sources were detected, 30% of which are hard sources (defined as those sources having a 0.5-2.0 keV to 2.0-8.0 keV hardness ratio > -0.2) and 70% of which have near-infrared counterparts. This table was created by the HEASARC in January 2007 based on CDS table J/ApJ/607/904/table1.dat. This is a service provided by NASA HEASARC . 2004ApJ...607..904R https://heasarc.gsfc.nasa.gov/W3Browse/all/trifidcxo.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=trifidcxo& GET text/xml 180 99999 true 270.56579167 -23.09891667 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=trifidcxo GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_trifidcxo&Action=More+Options&Action=Parameter+Search&ConeAdd=1 CHANDRA 0.0166666666666667 X-ray public trifidcxo Trifid Nebula (M 20) Chandra X-Ray Point Source Catalog name X-Ray Source Designation 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 count_rate Net Counts from Wavelength Analysis ct/s phot.count;em.X-ray double nullable count_rate_error Uncertainty in Counts ct/s stat.error;phot.count;em.X-ray double nullable hardness_ratio Hardness Ratio phot.flux;arith.ratio;em.X-ray.medium;em.X-ray.soft double nullable hardness_ratio_error Uncertainty in Hardness Ratio stat.error;phot.flux;arith.ratio;em.X-ray.medium;em.X-ray.soft double nullable bii Galactic Latitude degree pos.galactic.lat double nullable wavelet_id_number Wavelet Analysis Identification Number short nullable snr Signal-to-Noise Ratio from Wavelength Analysis stat.snr short nullable lii Galactic Longitude degree pos.galactic.lon double nullable alt_name Alternate X-Ray Source Designation meta.id char nullable source_number X-ray Source Identification Number meta.id 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