The computed velocity can be stored in a range of detail. When the task is run interactively the status line holds a short description of the results. The type of output saved is controlled by the user and can include a graphical summary of the correlation, tabular output in long or short form, and a verbose description of the correlation. Examples of each of these are shown below.
An example summary screen might look like
Tabular output might look like
#K IRAF = NOAO/IRAF V2.10.3BETA version
#K USER = fitz name
#K HOST = pisces computer
#K DATE = 11/30/93 mm-dd-yr
#K TIME = 12:50:23 hh:mm:ss
#K PACKAGE = rv name
#K TASK = fxcor name
#
#T Template ' A' -- Object = ''
# Image = 'htemp' Vhelio = INDEF
#
# Velocity Dispersion = 10.84 Km/sec/pixel Rebinned WPC = 1.57100E-5
#
#N OBJECT IMAGE REF HJD AP SHIFT FWHM VHELIO VERR
#U name image days pixel km/s km/s
#
hem A 7892.4990 1 115.075 55.07 1250.6633 2.556
Verbose output might look like
Description of Fit to CCF Peak and Cross-Correlation
NOAO/IRAF V2.10.3BETA fitz@pisces Tue 12:51:58 30-Nov-93
Obj = ` hem[1]' star = `'
Temp = ` htemp[1]' star = `'
Deltav = 10.845 Km/sec Tempvel = INDEF Km/sec
Fit Parameters:
Function = `gaussian' Width = INDEF
Height = 0. Minwidth = 3.
Peak = no Maxwidth = 21.
Weights = YES Background = 0.
Wincenter = INDEF Window = INDEF
Number of points fit = 11
Number of iterations = 3
Number of coeffs fit = 1 - 3
Chi Squared of fit = 7.290E-5
Fit Coefficients:
c[1] = 0.6997 +/- 0.7011 # Amplitude
c[2] = 115.0749 +/- 2.9854 # Center
c[3] = 4.6497 +/- 14.832 # Sigma^2
c[4] = 0.0000 (fixed) # Background
Mean Residual = -0.0077585
Sigma of Residuals = 0.0168528
Maximum of cross-correlation is in bin = 115.
Variance of cross-correlation = 0.03108019
HJD of observation = 2447892.49899 MJD = 47892.00001
Object sample used in correlation = `*'
Template sample used in correlation = `*'
Tonry&Davis R value = 15.91818
Velocity Results:
Shift of peak = 115.0749 pixels
Correlation height = 0.700
FWHM of peak = 55.06588 Km/sec (=5.077737 pixels)
Velocity computed from shift = 1250.5393 Km/sec
Observed velocity = 1280.3877 Km/sec
Heliocentric velocity = 1250.6633 +/- 2.556 Km/sec
Comments:
WARNING: Using template velocity of 0 km/s.