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j-faria/consts.py

Created August 29, 2018 18:30
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How to get those constants in the exoplanet RV amplitude / mass equations!
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consts.py
import astropy.constants as c
import astropy.units as u
from math import pi
C = (2*pi*c.G)**(1/3)
# K [m/s] = C1 ....
C1 = C.to( (u.meter/u.second) * u.year**(1/3.) * (1/u.M_jup) * u.M_sun**(2/3.) ).value
# mp sini [Mjup] = C2 ....
C2 = (1/C).to( u.M_jup / ms / u.day**(1/3) / u.M_sun**(2/3) ).value
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