Example #1
0
  				'dust_source': 'ALL',
  				'reduce_sn_dust': 25,
  				'destroy': True,
  				'inflows':{'metals': 0., 'xSFR': 0.5, 'dust': 0},
  				'outflows':{'metals': True, 'xSFR': 0.5, 'dust': True},
  				'cold_gas_fraction': 0.5,
  				'epsilon_grain': 1000,
          		'destruct': 1000.  }
        ]

snrate = []
all_results = []
galaxies = []

for item in inits:
	ch = ChemModel(**item)
	'''
	call modules to run the model:
	snrate: 		SN rate at each time step - this also sets time array
					so ch.supernova_rate() must be called first to set
					time array for the entire code

	all results: 	t, mg, m*, mz, Z, md, md/mz, sfr,
					dust_source(all), dust_source(stars),
					dust_source(ism), destruction_time, graingrowth_time
	'''
	snrate = ch.supernova_rate()
	all_results = ch.gas_metal_dust_mass(snrate)
	# write all the parameters to a dictionary for each init set
	params = {'time' : all_results[:,0],
		   'mgas' : all_results[:,1],
Example #2
0
        		'gasmass_init': 4e10,
				'SFH': 'Milkyway.sfh',
        		't_end': 20.,
				'gamma': 0,
				'IMF_fn': 'Chab',
				'dust_source': 'ALL',
				'reduce_sn_dust': False,
				'destroy': True,
				'inflows':{'metals': 0., 'xSFR': 0, 'dust': 0},
				'outflows':{'metals': True, 'xSFR': 0, 'dust': True},
				'cold_gas_fraction': 0.5,
				'epsilon_grain': 1000.,
        		'destruct': 1000.
              }

ch = ChemModel(**inits)

# call modules to run the model

# SN rate at each time step - this also sets time array so
# this must be run before ch.gas_metal_dust_mass
snrate = ch.supernova_rate()

# returns
# (a) dust sources vs time (all, stars only and grain growth only)
# (b) timescales for destruction & grain growth in Gyrs
# (c) all results -- t, mg, m*, mz, Z, md, md/mz, sfr
dust_sources, timescales, all_results = ch.gas_metal_dust_mass(snrate)

time = all_results[:,0]
mgas = all_results[:,1]