Description Usage Arguments Details Value Author(s) References See Also
Function to compute the angular momentum parameter lambda_R from the kinematic map of a galaxy. The parameter is defined by Emsellem et al. (2007) as
λ_R = \frac{\langle R\,|V|\rangle}{R√{V^2 + σ^2}}
1 2 3 |
kinmap |
a kinematic map with velocity and velocity dispersion,
given as a file name, an object of class |
config |
configuration file for the system at hand. The function requires the coordinates of the centre of the galaxy if these are not specified explicitely. |
SN.lim |
Lower signal-to-noise limit of data points that are to be used in the computation. |
SN.plot |
Create a plot of λ_R against
signal-to-noise limit. This clarifies the dependence on
|
Lcent, Mcent |
Centre coordinates of the galaxy in the kinematic map. These values have priority over those in the configuration file. |
title |
A title for the |
errors |
number of Monte Carlo simulations to simulate errors on
|
error.scale |
If |
v.err, sig.err |
dispersion of Gaussian distributions used to
obtain Monte Carlo kinmaps for |
... |
further arguments passed to or from other methods. |
The value of lambda_R computed here is uncorrected.
a number
Oliver Czoske
Emsellem, E. et al.: "The SAURON project - IX. A kinematic classification for early-type galaxies", MNRAS 379, 401 (2007)
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