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KDISTERR

KDISTERR

Name


  KDISTERR

Description


  This function calculates the two kinematic distances, with errors,
  for a given object whose velocity is known to some precision.

Category


  coordinate systems

Calling Sequence


  result=KDISTERR( l, vlow, vhigh, [/RADIANS, /SILENT])

Inputs


  l: The galactic longitude of the source given in degrees (or
    radians, if /RADIANS is set)
  vlow: The lower bound for the radial velocity estimate, in km/s
  vhigh: The uppper bound for the radial velocity estimate, in km/s

Keyword Parameters


  RADIANS: If set, l is given in radians
  SILENT: If set, textual summary of the results are suppressed

Outputs


  A 4 element vector. The first and third elements give the near and
  far kinematic distances in kpc, while the second and fourth give
  error estimates.

Procedure


  This routine uses kdist.pro to do all of the work

Restrictions


  This only works for objects with latitudes between 270 degrees and
  90 degrees, for which there are two possible kinematic distances

Modification History


  June 2008: Written by Chris Beaumont



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