def time_test_cluster():
from popstar import synthetic as syn
from popstar import atmospheres as atm
from popstar import evolution
from popstar import reddening
from popstar.imf import imf
from popstar.imf import multiplicity
logAge = 6.7
AKs = 2.7
distance = 4000
cluster_mass = 10**4
startTime = time.time()
evo = evolution.MergedBaraffePisaEkstromParsec()
atm_func = atm.get_merged_atmosphere
red_law = reddening.RedLawNishiyama09()
filt_list = ['nirc2,J', 'nirc2,Kp']
iso = syn.IsochronePhot(logAge, AKs, distance,
evo_model=evo, atm_func=atm_func,
red_law=red_law, filters=filt_list)
print('Constructed isochrone: %d seconds' % (time.time() - startTime))
imf_limits = np.array([0.07, 0.5, 150])
imf_powers = np.array([-1.3, -2.35])
multi = multiplicity.MultiplicityUnresolved()
my_imf = imf.IMF_broken_powerlaw(imf_limits, imf_powers, multiplicity=multi)
print('Constructed IMF with multiples: %d seconds' % (time.time() - startTime))
cluster = syn.ResolvedCluster(iso, my_imf, cluster_mass)
print('Constructed cluster: %d seconds' % (time.time() - startTime))
return
def model_young_cluster_object(resolved=False):
from popstar import synthetic as syn
from popstar import atmospheres as atm
from popstar import evolution
from popstar.imf import imf
from popstar.imf import multiplicity
log_age = 6.5
AKs = 0.1
distance = 8000.0
cluster_mass = 10000.
multi = multiplicity.MultiplicityUnresolved()
imf_in = imf.Kroupa_2001(multiplicity=multi)
evo = evolution.MergedPisaEkstromParsec()
atm_func = atm.get_merged_atmosphere
iso = syn.Isochrone(log_age, AKs, distance, evo, mass_sampling=10)
if resolved:
cluster = syn.ResolvedCluster(iso, imf_in, cluster_mass)
else:
cluster = syn.UnresolvedCluster(iso,
imf_in,
cluster_mass,
wave_range=[19000, 24000])
# Plot the spectrum of the most massive star
idx = cluster.mass_all.argmax()
print('Most massive star is {0:f} M_sun.'.format(cluster.mass_all[idx]))
#bigstar = cluster.spec_list_trim[idx]
plt.figure(1)
plt.clf()
plt.plot(cluster.spec_list_trim[idx]._wavetable,
cluster.spec_list_trim[idx]._fluxtable, 'k.')
# Plot an integrated spectrum of the whole cluster.
wave, flux = cluster.spec_list_trim[idx]._wavetable, cluster.spec_trim
plt.figure(2)
plt.clf()
plt.plot(wave, flux, 'k.')
return
def test_ifmr_multiplicity():
from popstar import synthetic as syn
from popstar import atmospheres as atm
from popstar import evolution
from popstar import reddening
from popstar import ifmr
from popstar.imf import imf
from popstar.imf import multiplicity
# Define cluster parameters
logAge = 9.7
AKs = 0.0
distance = 1000
cluster_mass = 1e6
mass_sampling = 5
# Test all filters
filt_list = ['nirc2,Kp', 'nirc2,H', 'nirc2,J']
startTime = time.time()
evo = evolution.MISTv1()
atm_func = atm.get_merged_atmosphere
ifmr_obj = ifmr.IFMR()
red_law = reddening.RedLawNishiyama09()
iso = syn.IsochronePhot(logAge,
AKs,
distance,
evo_model=evo,
atm_func=atm_func,
red_law=red_law,
filters=filt_list,
mass_sampling=mass_sampling)
print('Constructed isochrone: %d seconds' % (time.time() - startTime))
# Now to create the cluster.
imf_mass_limits = np.array([0.07, 0.5, 1, np.inf])
imf_powers = np.array([-1.3, -2.3, -2.3])
##########
# Start without multiplicity and IFMR
##########
my_imf1 = imf.IMF_broken_powerlaw(imf_mass_limits,
imf_powers,
multiplicity=None)
print('Constructed IMF: %d seconds' % (time.time() - startTime))
cluster1 = syn.ResolvedCluster(iso, my_imf1, cluster_mass, ifmr=ifmr_obj)
clust1 = cluster1.star_systems
print('Constructed cluster: %d seconds' % (time.time() - startTime))
##########
# Test with multiplicity and IFMR
##########
multi = multiplicity.MultiplicityUnresolved()
my_imf2 = imf.IMF_broken_powerlaw(imf_mass_limits,
imf_powers,
multiplicity=multi)
print('Constructed IMF with multiples: %d seconds' %
(time.time() - startTime))
cluster2 = syn.ResolvedCluster(iso, my_imf2, cluster_mass, ifmr=ifmr_obj)
clust2 = cluster2.star_systems
comps2 = cluster2.companions
print('Constructed cluster with multiples: %d seconds' %
(time.time() - startTime))
##########
# Tests
##########
# Check that we have black holes, neutron stars, and white dwarfs in both.
assert len(np.where(clust1['phase'] == 101)) > 0 # WD
assert len(np.where(clust2['phase'] == 101)) > 0
assert len(np.where(clust1['phase'] == 102)) > 0 # NS
assert len(np.where(clust2['phase'] == 102)) > 0
assert len(np.where(clust1['phase'] == 103)) > 0 # BH
assert len(np.where(clust2['phase'] == 103)) > 0
# Now check that we have companions that are WDs, NSs, and BHs
assert len(np.where(comps2['phase'] == 101)) > 0
assert len(np.where(comps2['phase'] == 102)) > 0
assert len(np.where(comps2['phase'] == 103)) > 0
# Make sure no funky phase designations (due to interpolation effects)
# slipped through
idx = np.where((clust1['phase'] > 5) & (clust1['phase'] < 101)
& (clust1['phase'] != 9))
idx2 = np.where((comps2['phase'] > 5) & (comps2['phase'] < 101)
& (comps2['phase'] != 9))
assert len(idx[0]) == 0
return
def test_ResolvedCluster():
from popstar import synthetic as syn
from popstar import atmospheres as atm
from popstar import evolution
from popstar import reddening
from popstar.imf import imf
from popstar.imf import multiplicity
# Define cluster parameters
logAge = 6.7
AKs = 2.4
distance = 4000
cluster_mass = 10**5.
mass_sampling = 5
# Test filters
filt_list = ['nirc2,J', 'nirc2,Kp']
startTime = time.time()
evo = evolution.MergedBaraffePisaEkstromParsec()
atm_func = atm.get_merged_atmosphere
red_law = reddening.RedLawNishiyama09()
iso = syn.IsochronePhot(logAge,
AKs,
distance,
evo_model=evo,
atm_func=atm_func,
red_law=red_law,
filters=filt_list,
mass_sampling=mass_sampling)
print('Constructed isochrone: %d seconds' % (time.time() - startTime))
# Now to create the cluster.
imf_mass_limits = np.array([0.07, 0.5, 1, np.inf])
imf_powers = np.array([-1.3, -2.3, -2.3])
##########
# Start without multiplicity
##########
my_imf1 = imf.IMF_broken_powerlaw(imf_mass_limits,
imf_powers,
multiplicity=None)
print('Constructed IMF: %d seconds' % (time.time() - startTime))
cluster1 = syn.ResolvedCluster(iso, my_imf1, cluster_mass)
clust1 = cluster1.star_systems
print('Constructed cluster: %d seconds' % (time.time() - startTime))
assert len(clust1) > 0
plt.figure(3)
plt.clf()
plt.plot(clust1['m_nirc2_J'] - clust1['m_nirc2_Kp'], clust1['m_nirc2_J'],
'r.')
plt.plot(iso.points['m_nirc2_J'] - iso.points['m_nirc2_Kp'],
iso.points['m_nirc2_J'], 'c.')
plt.gca().invert_yaxis()
# *** Visual Inspections: ***
# - check that points (red) fall between isochrone points (blue)
##########
# Test with multiplicity
##########
multi = multiplicity.MultiplicityUnresolved()
my_imf2 = imf.IMF_broken_powerlaw(imf_mass_limits,
imf_powers,
multiplicity=multi)
print('Constructed IMF with multiples: %d seconds' %
(time.time() - startTime))
cluster2 = syn.ResolvedCluster(iso, my_imf2, cluster_mass)
clust2 = cluster2.star_systems
print('Constructed cluster with multiples: %d seconds' %
(time.time() - startTime))
assert len(clust2) > 0
assert len(cluster2.companions) > 0
assert np.sum(clust2['N_companions']) == len(cluster2.companions)
##########
# Plots
##########
# Plot an IR CMD and compare cluster members to isochrone.
plt.figure(1)
plt.clf()
plt.plot(clust1['m_nirc2_J'] - clust1['m_nirc2_Kp'], clust1['m_nirc2_J'],
'r.')
plt.plot(clust2['m_nirc2_J'] - clust2['m_nirc2_Kp'], clust2['m_nirc2_J'],
'b.')
plt.plot(iso.points['m_nirc2_J'] - iso.points['m_nirc2_Kp'],
iso.points['m_nirc2_J'], 'c-')
plt.gca().invert_yaxis()
plt.xlabel('J - Kp (mag)')
plt.ylabel('J (mag')
# Plot a mass-magnitude relationship.
plt.figure(2)
plt.clf()
plt.semilogx(clust1['mass'], clust1['m_nirc2_J'], 'r.')
plt.semilogx(clust2['mass'], clust2['m_nirc2_J'], 'r.')
plt.gca().invert_yaxis()
plt.xlabel('Mass (Msun)')
plt.ylabel('J (mag)')
# # Plot the spectrum of the most massive star
# idx = cluster.mass.argmax()
# plt.clf()
# plt.plot(cluster.stars[idx].wave, cluster.stars[idx].flux, 'k.')
# # Plot an integrated spectrum of the whole cluster.
# wave, flux = cluster.get_integrated_spectrum()
# plt.clf()
# plt.plot(wave, flux, 'k.')
return
def test_cluster_mass():
from popstar import synthetic as syn
from popstar import atmospheres as atm
from popstar import evolution
from popstar import reddening
from popstar import ifmr
from popstar.imf import imf
from popstar.imf import multiplicity
# Define cluster parameters
logAge = 6.7
AKs = 2.4
distance = 4000
cluster_mass = 10**5.
mass_sampling = 5
# Test filters
filt_list = ['nirc2,J', 'nirc2,Kp']
startTime = time.time()
# Define evolution/atmosphere models and extinction law
evo = evolution.MISTv1()
atm_func = atmospheres.get_merged_atmosphere
red_law = reddening.RedLawHosek18b()
iso = syn.IsochronePhot(logAge,
AKs,
distance,
evo_model=evo,
atm_func=atm_func,
red_law=red_law,
filters=filt_list,
mass_sampling=mass_sampling)
print('Constructed isochrone: %d seconds' % (time.time() - startTime))
# Now to create the cluster.
imf_mass_limits = np.array([0.2, 0.5, 1, 120.0])
imf_powers = np.array([-1.3, -2.3, -2.3])
# IFMR
my_ifmr = ifmr.IFMR()
##########
# Start without multiplicity
##########
my_imf1 = imf.IMF_broken_powerlaw(imf_mass_limits,
imf_powers,
multiplicity=None)
print('Constructed IMF: %d seconds' % (time.time() - startTime))
cluster1 = syn.ResolvedCluster(iso, my_imf1, cluster_mass, ifmr=my_ifmr)
clust1 = cluster1.star_systems
print('Constructed cluster: %d seconds' % (time.time() - startTime))
# Check that the total mass is within tolerance of input mass
cluster_mass_out = clust1['systemMass'].sum()
assert np.abs(cluster_mass_out -
cluster_mass) < 200.0 # within 200 Msun of desired mass.
print('Cluster Mass: IN = ', cluster_mass, " OUT = ", cluster_mass_out)
##########
# Test with multiplicity
##########
multi = multiplicity.MultiplicityUnresolved()
my_imf2 = imf.IMF_broken_powerlaw(imf_mass_limits,
imf_powers,
multiplicity=multi)
print('Constructed IMF with multiples: %d seconds' %
(time.time() - startTime))
cluster2 = syn.ResolvedCluster(iso, my_imf2, cluster_mass, ifmr=my_ifmr)
clust2 = cluster2.star_systems
print('Constructed cluster with multiples: %d seconds' %
(time.time() - startTime))
# Check that the total mass is within tolerance of input mass
cluster_mass_out = clust2['systemMass'].sum()
assert np.abs(cluster_mass_out -
cluster_mass) < 200.0 # within 200 Msun of desired mass.
print('Cluster Mass: IN = ', cluster_mass, " OUT = ", cluster_mass_out)
return
