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 Database: M81CXO
   M 81 Chandra X-Ray Discrete Source Catalog
Database Index | Basic Search | Advanced Search
 Name Resolver
Name:

 Search Co-ordinates
Co-ords:

Co-ordinate system:
Equatorial Ecliptic Galactic
Equinox: 1950 2000

 Search Type
Cone search, radius: arcmin.
Square search, width: arcmin.
Rectangle search, size: arcmin
 Output Options
 Output coordinates in:
Decimal  Sexagesimal
 Output system:
Equatorial   Ecliptic   Galactic
 Output epoch:
J2000   B1950
 Output format:
Filter Search  
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Parameter
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Definition
 
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<- Sort by distance from search centre (default)
 SOURCE_NUMBER 
Sequential Identification Number for Each X-Ray Source in Catalog
 NAME 
Catalog Source Designation
 RA 
Right Ascension
 DECL 
Declination
 LII 
Galactic Longitude
 BII 
Galactic Latitude
 COUNT_RATE 
Aperture-Corrected Source Count Rate
 COUNT_RATE_ERROR 
Uncertainty in Count Rate
 SNR 
Signal-to-Noise Ratio for Count Rate
 VMAG_LIMIT 
Limit Flag for V Magnitude
 VMAG 
Visual Magnitude
 VMAG_FLAG 
Flag H=Located in HST Field But No Optical Candidate I=Only I-Band Image
 ACIS_CCD 
Chandra ACIS CCD Device Identification
 REGION_CODE 
Global Environment Code
 LX 
X-Ray Luminosity (erg/s)
 LX_ERROR 
Uncertainty in X-Ray Luminosity (erg/s)
 COMMENTS 
Additional Comments
 NH 
Hydrogen Column Density (cm^-2)
 NH_ERROR 
RMS Uncertainty in Hydrogen Column Density (cm^-2)
 SPECT_INDEX 
Spectral Parameter
 SPECT_INDEX_ERROR 
RMS Uncertainty in Spectral Parameter
 CHI_SQUARED 
Chi^2 Value of Spectral Fit
 DOF 
Degrees of Freedom of Spectral Fit
 PROB_CONSTANT 
Kolmogorov-Smirnov Statistic Result (%)

 Output number of lines:  
If you have any problems, please consult the help page or mail ledas-help@star.le.ac.uk
 
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