binney: Function to compute <v/sigma> as defined by Binney (2005)

Description Usage Arguments Value Author(s) References See Also

Description

This function computes <v/sigma> as appropriate for two-dimensional kinematic data.

Usage

1
binney(kinmap, SN.lim = 0, SN.plot = FALSE, title = NULL, ...)

Arguments

kinmap

a kinematic map with velocity and velocity dispersion, given as a file name, an object of class kinmap or as a data.frame containing the relevant columns

SN.lim

Lower signal-to-noise limit of data points that are to be used in the computation.

SN.plot

Create a plot of <v/sigma> against signal-to-noise limit. This clarifies the dependence on SN.lim and may help in choosing an appropriate value.

title

A title for the SN.plot.

...

further arguments passed to or from other methods.

Value

Just a number

Author(s)

Oliver Czoske

References

Binney, J.: "Rotation and anisotropy of galaxies revisited", MNRAS 363, 937 (2005)

See Also

lambdaR, v.sig.2d


oczoske/slacR documentation built on May 20, 2019, 8:23 p.m.