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pychem_optimal_sampling_Mmax
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Thu, Feb 20, 14:30

pychem_optimal_sampling_Mmax
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#!/usr/bin/env python
import Ptools as pt
from optparse import OptionParser
from pNbody import *
from pNbody import units
import string
from scipy import optimize
from PyChem import chemistry
def parse_options():
usage = "usage: %prog [options] file"
parser = OptionParser(usage=usage)
parser = pt.add_limits_options(parser)
parser = pt.add_log_options(parser)
parser = pt.add_postscript_options(parser)
parser.add_option("--x",
action="store",
dest="x",
type="string",
default = 'Fe',
help="x value to plot",
metavar=" STRING")
parser.add_option("--y",
action="store",
dest="y",
type="string",
default = 'Mg',
help="y value to plot",
metavar=" STRING")
parser.add_option("--dt",
action="store",
dest="dt",
type="float",
default = 0.1,
help="dt",
metavar=" FLOAT")
parser.add_option("--mstar",
action="store",
dest="mstar",
type="float",
default = 1e5,
help="initial mass of the SSP in solar mass",
metavar=" FLOAT")
parser.add_option("--tstar",
action="store",
dest="tstar",
type="float",
default = 0,
help="formation time of the SSP",
metavar=" FLOAT")
parser.add_option("-o",
action="store",
dest="obs",
type="string",
default = 'Y',
help="observable to plot",
metavar=" STRING")
parser.add_option("--timeunit",
action="store",
dest="timeunit",
type="string",
default = None,
help="unit of time",
metavar=" STRING")
parser.add_option("--NumberOfTables",
action="store",
dest="NumberOfTables",
type="int",
default = 1,
help="NumberOfTables",
metavar=" INT")
parser.add_option("--DefaultTable",
action="store",
dest="DefaultTable",
type="int",
default = 0,
help="DefaultTable",
metavar=" INT")
(options, args) = parser.parse_args()
pt.check_files_number(args)
files = args
return files,options
########################################################################
# M A I N
########################################################################
SOLAR_MASS = 1.989e33
UnitLength_in_cm = 3.085e+21
UnitMass_in_g = 1.989e+43
UnitVelocity_in_cm_per_s = 20725573.785998672
UnitTime_in_s = 148849920000000.0
files,opt = parse_options()
file = files[0]
# some parameters
M0 = opt.mstar *SOLAR_MASS/UnitMass_in_g # gas mass of the SSP (in code unit)
# init
chemistry.init_chimie(file,opt.NumberOfTables,opt.DefaultTable)
mmax = chemistry.get_Mmax()
mmin = chemistry.get_Mmin()
##################
# optimal imf sampling
##################
Mcls = 10**arange(1,6,0.1)
M_maxs = zeros(len(Mcls))
for i,Mcl in enumerate(Mcls):
m_max_star = chemistry.optimal_sampling_init_norm(Mcl)
M_maxs[i] = m_max_star
pt.loglog()
pt.plot(Mcls,M_maxs)
pt.xlabel(r'$M_{\rm{cl}}\,[\rm{M}_\odot]$')
pt.ylabel(r'$m_{\rm{max}}\,[\rm{M}_\odot]$')
pt.show()

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