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 Database: HCG
   Hickson Compact Groups of Galaxies (HCG) 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)
 HCG 
Hickson Compact Group Number
 NAME 
HCG Catalog Compact Group Designation
 RA 
Right Ascension
 DECL 
Declination
 LII 
Galactic Longitude
 BII 
Galactic Latitude
 DYNAMICS_FLAG 
Flag Indicates Dynamics Info Present
 GROUP_TYPE 
Group Type Classification
 MEMBER_COUNT 
Number of Galaxies in Group
 ANGULAR_SIZE 
Group Angular Diameter (arcmin)
 TOT_MAG_GROUP 
Total Red Magnitude of Group
 BRIGHTEST_MAG 
Brightest Member Red Magnitude
 BRIGHTEST_REDSHIFT 
Redshift of Brightest Galaxy
 ALT_NAME1 
Alternative Designation 1
 ALT_NAME2 
Alternative Designation 2
 ALT_NAME3 
Alternative Designation 3
 ALT_NAME4 
Alternative Designation 4
 REDSHIFT 
Group Redshift Derived from the Median Galaxy Heliocentric Velocity
 NUMBER_GALAXIES 
Number of Galaxies with Accordant Velocities
 LOG_SIGMA_VRAD 
Log10 of Radial Velocity Dispersion (in km/s)
 LOG_VEL_DISPERSION 
Log10 of Estimated Instrinsic 3D Velocity Dispersion (in km/s)
 LOG_MEDIAN_SEP 
Log10 of Median Projected Separation (in kpc)
 LOG_CROSSING_TIME 
Log10 of Crossing Time (in 1/H_0 Units)
 LOG_VIRIAL_MASS 
Log10 of Virial Mass of Group (in grams)
 LOG_PROJECTED_MASS 
Log10 of Projected Mass (in grams)
 LOG_AVERAGE_MASS 
Log10 of Average Mass (in grams)
 LOG_MEDIAN_MASS 
Log10 of Median Mass (in grams)
 LOG_ADOPTED_MASS 
Log10 of Adopted Mass (in grams)
 LOG_TOT_LUMINOSITY 
Log10 of Total Blue Luminosity of the Accordant Galaxies (in W)
 LOG_MASS_TO_LIGHT 
Log10 of Mass-to-Light Ratio (in Solar Units)
 LOG_MASS_DENSITY 
Log10 of Mass Density (in g/cm^3)

 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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