angsize: Angular Size Conversion

In astro: Astronomy Functions, Tools and Routines

Description

Converts between angular and physical size

Usage

angsize(z = 1, r = 1, inp = "arcsec", out = "kpc", c = 3E8, H = 70, 
        M = 0.3, L = 1-M, K = 1-M-L)

Arguments

z	redshift
r	radius
inp	input units
out	output units
c	speed of light (m/s)
H	Hubble constant (km/s/Mpc)
M	Omega M - matter
L	Omega L - energy
K	Omega K - curvature

Details

Units available for conversion are: 'deg', 'rad' or 'arcsec' <==> 'm', 'pc', 'kpc' or 'Mpc'.

Value

Converted size in indicated units to the given redshift with the given cosmology.

Author(s)

Lee Kelvin <[e-mail]>

References

Hogg D. W., 1999, ArXiv Astrophysics e-prints, arXiv:astro-ph/9905116

See Also

The astronomy package: astro.

astro documentation built on May 2, 2019, 2:14 a.m.