mirror of
https://codeberg.org/Yael-II/MSc1-Internship-Stellar-Cluster.git
synced 2026-03-15 11:16:27 +01:00
54 lines
2.2 KiB
Python
54 lines
2.2 KiB
Python
"""
|
|
* COSMIC - EMISSION
|
|
* Version 3
|
|
@ Yaël Moussouni
|
|
@ Unistra, P&E, MSc1-MoFP
|
|
@ Observatory of Strasbourg (Intern)
|
|
"""
|
|
|
|
import numpy as np
|
|
import amuse.units.units as u
|
|
|
|
def rotation(stars, params):
|
|
N = params["N_stars"] + np.int32(np.round(params["N_stars"] * params["binary_fraction"]))
|
|
stars.X_v = np.random.uniform(0, 10, N) | u.km * u.s**(-1)
|
|
p = np.random.uniform(0, 1, N)
|
|
stars.X_vsini = stars.X_v * np.sqrt(2*p-p**2)
|
|
return stars
|
|
|
|
def X_emission(stars, params):
|
|
for i in range(len(stars)):
|
|
if stars[i].temperature.value_in(u.K) > 7300: # O B A
|
|
stars[i].X_luminosity = params["X_coefficient_OBA"] * stars[i].luminosity.in_(u.erg * u.s**(-1))
|
|
elif stars[i].temperature.value_in(u.K) < 6000: # G K M
|
|
stars[i].X_luminosity = params["X_coefficient_GKM"] * (stars[i].X_vsini.value_in(u.km * u.s**(-1)))**(1.9) | u.erg * u.s**(-1)
|
|
else: # F
|
|
stars[i].X_luminosity = 0 | u.erg * u.s**(-1)
|
|
return stars
|
|
|
|
def plasma_temperature(stars, params):
|
|
for i in range(len(stars)):
|
|
if stars[i].temperature.value_in(u.K) > 7300 : # O B A
|
|
if stars[i].age.value_in(u.Myr) < 150: # young
|
|
stars[i].X_temperature_0 = 0.6 | u.kilo(u.eV)
|
|
stars[i].X_temperature_1 = 0.0 | u.kilo(u.eV)
|
|
else: # old
|
|
stars[i].X_temperature_0 = 0.5 | u.kilo(u.eV)
|
|
stars[i].X_temperature_1 = 0.0 | u.kilo(u.eV)
|
|
elif stars[i].temperature.value_in(u.K) < 6000: # G K M
|
|
if stars[i].age.value_in(u.Myr) < 150: # young
|
|
stars[i].X_temperature_0 = 0.4 | u.kilo(u.eV)
|
|
stars[i].X_temperature_1 = 1.0 | u.kilo(u.eV)
|
|
else: # old
|
|
stars[i].X_temperature_0 = 0.2 | u.kilo(u.eV)
|
|
stars[i].X_temperature_1 = 0.8 | u.kilo(u.eV)
|
|
else: # F
|
|
if stars[i].age.value_in(u.Myr) < 150: # young
|
|
stars[i].X_temperature_0 = 0.6 | u.kilo(u.eV)
|
|
stars[i].X_temperature_1 = 0.0 | u.kilo(u.eV)
|
|
else: # old
|
|
stars[i].X_temperature_0 = 0.5 | u.kilo(u.eV)
|
|
stars[i].X_temperature_1 = 0.0 | u.kilo(u.eV)
|
|
|
|
return stars
|