Usage¶
The Documentation of the Python functions provides in detail in the API Documentation (equib.github.io/pyEQUIB/doc). There are three main object units:
Collisional Excitation Unit¶
Collision Unit which have the API functions for plasma diagnostics and abundance analysis of collisionally excited lines. Here are some examples of using Collision Unit.
Temperature:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_dir = os.path.join('atomic-data', 'chianti70') atom_elj_file = os.path.join(base_dir,data_dir, 'AtomElj.fits') atom_omij_file = os.path.join(base_dir,data_dir, 'AtomOmij.fits') atom_aij_file = os.path.join(base_dir,data_dir, 'AtomAij.fits') atom = 's' ion = 'ii' s_ii_elj = atomneb.read_elj(atom_elj_file, atom, ion, level_num=5) s_ii_omij = atomneb.read_omij(atom_omij_file, atom, ion) s_ii_aij = atomneb.read_aij(atom_aij_file, atom, ion) upper_levels='1,2,1,3/' lower_levels='1,5/' density = np.float64(2550) line_flux_ratio=np.float64(10.753) temperature = pyequib.calc_temperature(line_flux_ratio=line_flux_ratio, density=density, upper_levels=upper_levels, lower_levels=lower_levels, elj_data=s_ii_elj, omij_data=s_ii_omij, aij_data=s_ii_aij) print("Electron Temperature:", temperature)which gives:
Electron Temperature: 7920.2865Density:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_dir = os.path.join('atomic-data', 'chianti70') atom_elj_file = os.path.join(base_dir,data_dir, 'AtomElj.fits') atom_omij_file = os.path.join(base_dir,data_dir, 'AtomOmij.fits') atom_aij_file = os.path.join(base_dir,data_dir, 'AtomAij.fits') atom = 's' ion = 'ii' s_ii_elj = atomneb.read_elj(atom_elj_file, atom, ion, level_num=5) s_ii_omij = atomneb.read_omij(atom_omij_file, atom, ion) s_ii_aij = atomneb.read_aij(atom_aij_file, atom, ion) upper_levels='1,2/' lower_levels='1,3/' temperature=np.float64(7000.0)# line_flux_ratio=np.float64(1.506)# density = pyequib.calc_density(line_flux_ratio=line_flux_ratio, temperature=temperature, upper_levels=upper_levels, lower_levels=lower_levels, elj_data=s_ii_elj, omij_data=s_ii_omij, aij_data=s_ii_aij) print("Electron Density:", density)which gives:
Electron Density: 2312.6395Ionic Abundance:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_dir = os.path.join('atomic-data', 'chianti70') data_rc_dir = os.path.join('atomic-data-rc') atom_elj_file = os.path.join(base_dir,data_dir, 'AtomElj.fits') atom_omij_file = os.path.join(base_dir,data_dir, 'AtomOmij.fits') atom_aij_file = os.path.join(base_dir,data_dir, 'AtomAij.fits') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'h' ion = 'ii' # H I Rec hi_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) atom = 'o' ion = 'iii' # [O III] o_iii_elj = atomneb.read_elj(atom_elj_file, atom, ion, level_num=5) # read Energy Levels (Ej) o_iii_omij = atomneb.read_omij(atom_omij_file, atom, ion) # read Collision Strengths (Omegaij) o_iii_aij = atomneb.read_aij(atom_aij_file, atom, ion) # read Transition Probabilities (Aij) levels5007='3,4/' temperature=np.float64(10000.0) density=np.float64(5000.0) iobs5007=np.float64(1200.0) abb5007 = pyequib.calc_abundance(temperature=temperature, density=density, line_flux=iobs5007, atomic_levels=levels5007, elj_data=o_iii_elj, omij_data=o_iii_omij, aij_data=o_iii_aij, h_i_aeff_data=hi_rc_data['aeff'][0]) print('N(O^2+)/N(H+):', abb5007)which gives:
N(O^2+)/N(H+): 0.00041256231Emissivity:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_dir = os.path.join('atomic-data', 'chianti70') data_rc_dir = os.path.join('atomic-data-rc') atom_elj_file = os.path.join(base_dir,data_dir, 'AtomElj.fits') atom_omij_file = os.path.join(base_dir,data_dir, 'AtomOmij.fits') atom_aij_file = os.path.join(base_dir,data_dir, 'AtomAij.fits') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'h' ion = 'ii' # H I Rec hi_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) atom = 'o' ion = 'iii' # [O III] o_iii_elj = atomneb.read_elj(atom_elj_file, atom, ion, level_num=5) # read Energy Levels (Ej) o_iii_omij = atomneb.read_omij(atom_omij_file, atom, ion) # read Collision Strengths (Omegaij) o_iii_aij = atomneb.read_aij(atom_aij_file, atom, ion) # read Transition Probabilities (Aij) levels5007='3,4/' temperature=np.float64(10000.0) density=np.float64(5000.0) iobs5007=np.float64(1200.0) emis = pyequib.calc_emissivity(temperature=temperature, density=density, atomic_levels=levels5007, elj_data=o_iii_elj, omij_data=o_iii_omij, aij_data=o_iii_aij) print('Emissivity(O III 5007):', emis)which gives:
Emissivity(O III 5007): 3.6041012e-21Atomic Level Population:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_dir = os.path.join('atomic-data', 'chianti70') atom_elj_file = os.path.join(base_dir,data_dir, 'AtomElj.fits') atom_omij_file = os.path.join(base_dir,data_dir, 'AtomOmij.fits') atom_aij_file = os.path.join(base_dir,data_dir, 'AtomAij.fits') atom = 's' ion = 'ii' s_ii_elj = atomneb.read_elj(atom_elj_file, atom, ion, level_num=5) s_ii_omij = atomneb.read_omij(atom_omij_file, atom, ion) s_ii_aij = atomneb.read_aij(atom_aij_file, atom, ion) density = np.float64(1000) temperature=np.float64(10000.0)# nlj = pyequib.calc_populations(temperature=temperature, density=density, elj_data=s_ii_elj, omij_data=s_ii_omij, aij_data=s_ii_aij) print('Populations:', nlj)which prints:
Populations: 0.96992832 0.0070036315 0.023062261 2.6593671e-06 3.1277019e-06Critical Density:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_dir = os.path.join('atomic-data', 'chianti70') atom_elj_file = os.path.join(base_dir,data_dir, 'AtomElj.fits') atom_omij_file = os.path.join(base_dir,data_dir, 'AtomOmij.fits') atom_aij_file = os.path.join(base_dir,data_dir, 'AtomAij.fits') atom = 's' ion = 'ii' s_ii_elj = atomneb.read_elj(atom_elj_file, atom, ion, level_num=5) s_ii_omij = atomneb.read_omij(atom_omij_file, atom, ion) s_ii_aij = atomneb.read_aij(atom_aij_file, atom, ion) temperature=np.float64(10000.0) n_crit = pyequib.calc_crit_density(temperature=temperature, elj_data=s_ii_elj, omij_data=s_ii_omij, aij_data=s_ii_aij) print('Critical Densities:', n_crit)which gives:
Critical Densities: 0.0000000 5007.8396 1732.8414 1072685.0 2220758.1All Ionic Level Information:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_dir = os.path.join('atomic-data', 'chianti70') data_rc_dir = os.path.join('atomic-data-rc') atom_elj_file = os.path.join(base_dir,data_dir, 'AtomElj.fits') atom_omij_file = os.path.join(base_dir,data_dir, 'AtomOmij.fits') atom_aij_file = os.path.join(base_dir,data_dir, 'AtomAij.fits') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'h' ion = 'ii' # H I Rec hi_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) atom = 'o' ion = 'iii' # [O III] o_iii_elj = atomneb.read_elj(atom_elj_file, atom, ion, level_num=5) # read Energy Levels (Ej) o_iii_omij = atomneb.read_omij(atom_omij_file, atom, ion) # read Collision Strengths (Omegaij) o_iii_aij = atomneb.read_aij(atom_aij_file, atom, ion) # read Transition Probabilities (Aij) temperature=np.float64(10000.0) density=np.float64(5000.0) pyequib.print_ionic(temperature=temperature, density=density, elj_data=o_iii_elj, omij_data=o_iii_omij, aij_data=o_iii_aij, h_i_aeff_data=hi_rc_data['aeff'][0])which gives:
Temperature = 10000.0 K Density = 1000.0 cm-3 Level Populations Critical Densities Level 1: 3.063E-01 0.000E+00 Level 2: 4.896E-01 4.908E+02 Level 3: 2.041E-01 3.419E+03 Level 4: 4.427E-05 6.853E+05 Level 5: 2.985E-09 2.547E+07 2.597E-05 88.34um (2-->1) 2.859E-22 0.000E+00 9.632E-05 32.66um 51.81um (3-->1) (3-->2) 0.000E+00 7.536E-22 2.322E-06 6.791E-03 2.046E-02 4932.60A 4960.29A 5008.24A (4-->1) (4-->2) (4-->3) 4.140E-25 1.204E-21 3.593E-21 0.000E+00 2.255E-01 6.998E-04 1.685E+00 2315.58A 2321.67A 2332.12A 4364.45A (5-->1) (5-->2) (5-->3) (5-->4) 0.000E+00 5.759E-24 1.779E-26 2.289E-23 H-beta emissivity: 1.237E-25 N(H+) Ne [erg/s]
Recombination Unit¶
Recombination Unit which have the API functions for plasma diagnostics and abundance analysis of recombination lines. Here are some examples of using Recombination Unit.
He+ Ionic Abundance:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_he_i_file = os.path.join(base_dir,data_rc_dir, 'rc_he_ii_PFSD12.fits') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'h' ion = 'ii' # H I h_i_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) atom = 'he' ion = 'ii' # He I he_i_rc_data = atomneb.read_aeff_he_i_pfsd12(atom_rc_he_i_file, atom, ion) temperature=np.float64(10000.0) density=np.float64(5000.0) he_i_4471_flux= 2.104 linenum=10# 4471.50 abund_he_i = pyequib.calc_abund_he_i_rl(temperature=temperature, density=density, linenum=linenum, line_flux=he_i_4471_flux, he_i_aeff_data=he_i_aeff_data, h_i_aeff_data=h_i_aeff_data) print('N(He^+)/N(H^+):', abund_he_i)which gives:
N(He^+)/N(H^+): 0.040848393He++ Ionic Abundance:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'h' ion = 'ii' # H I h_i_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) atom = 'he' ion = 'iii' # He II he_ii_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) temperature=np.float64(10000.0) density=np.float64(5000.0) he_ii_4686_flux = 135.833 abund_he_ii = pyequib.calc_abund_he_ii_rl(temperature=temperature, density=density, line_flux=he_ii_4686_flux, he_ii_aeff_data=he_ii_aeff_data, h_i_aeff_data=h_i_aeff_data) print('N(He^2+)/N(H^+):', abund_he_ii)which gives:
N(He^2+)/N(H^+): 0.11228817C++ Ionic Abundance:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_all_file = os.path.join(base_dir,data_rc_dir, 'rc_collection.fits') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'c' ion = 'iii' # C II c_ii_rc_data = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion) atom = 'h' ion = 'ii' # H I h_i_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) temperature=np.float64(10000.0) density=np.float64(5000.0) wavelength=6151.43 c_ii_6151_flux = 0.028 abund_c_ii = pyequib.calc_abund_c_ii_rl(temperature=temperature, density=density, wavelength=wavelength, line_flux=c_ii_6151_flux, c_ii_rc_data=c_ii_rc_data, h_i_aeff_data=h_i_aeff_data) print('N(C^2+)/N(H+):', abund_c_ii)which gives:
N(C^2+)/N(H+): 0.00063404650C3+ Ionic Abundance:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_ppb91_file = os.path.join(base_dir,data_rc_dir, 'rc_PPB91.fits') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'c' ion = 'iv' # C III c_iii_rc_data = atomneb.read_aeff_ppb91(atom_rc_ppb91_file, atom, ion) atom = 'h' ion = 'ii' # H I h_i_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) temperature=np.float64(10000.0) density=np.float64(5000.0) wavelength=4647.42 c_iii_4647_flux = 0.107 abund_c_iii = pyequib.calc_abund_c_iii_rl(temperature=temperature, density=density, wavelength=wavelength, line_flux=c_iii_4647_flux, c_iii_rc_data=c_iii_rc_data, h_i_aeff_data=h_i_aeff_data) print('N(C^3+)/N(H+):', abund_c_iii)which gives:
N(C^3+)/N(H+): 0.00017502840N++ Ionic Abundance:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_all_file = os.path.join(base_dir,data_rc_dir, 'rc_collection.fits') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'n' ion = 'iii' # N II n_ii_rc_data = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion) n_ii_rc_data_br = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion, br=True) atom = 'h' ion = 'ii' # H I h_i_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) wavelength=4442.02 n_ii_4442_flux = 0.017 abund_n_ii = pyequib.calc_abund_n_ii_rl(temperature=temperature, density=density, wavelength=wavelength, line_flux=n_ii_4442_flux, n_ii_rc_br=n_ii_rc_data_br, n_ii_rc_data=n_ii_rc_data, h_i_aeff_data=h_i_aeff_data) print('N(N^2+)/N(H+):', abund_n_ii)which gives:
N(N^2+)/N(H+): 0.00069297541N3+ Ionic Abundance:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_ppb91_file = os.path.join(base_dir,data_rc_dir, 'rc_PPB91.fits') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'n' ion = 'iv' # N III n_iii_rc_data = atomneb.read_aeff_ppb91(atom_rc_ppb91_file, atom, ion) atom = 'h' ion = 'ii' # H I h_i_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) wavelength=4640.64 n_iii_4641_flux = 0.245 abund_n_iii = pyequib.calc_abund_n_iii_rl(temperature=temperature, density=density, wavelength=wavelength, line_flux=n_iii_4641_flux, n_iii_rc_data=n_iii_rc_data, h_i_aeff_data=h_i_aeff_data) print('N(N^3+)/N(H+):', abund_n_iii)which gives:
N(N^3+)/N(H+): 6.3366175e-05O++ Ionic Abundance:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_all_file = os.path.join(base_dir,data_rc_dir, 'rc_collection.fits') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'o' ion = 'iii' # O II o_ii_rc_data = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion) o_ii_rc_data_br = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion, br=True) atom = 'h' ion = 'ii' # H I h_i_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) wavelength=4613.68 o_ii_4614_flux = 0.009 abund_o_ii = pyequib.calc_abund_o_ii_rl(temperature=temperature, density=density, wavelength=wavelength, line_flux=o_ii_4614_flux, o_ii_rc_br=o_ii_rc_data_br, o_ii_rc_data=o_ii_rc_data, h_i_aeff_data=h_i_aeff_data) print('N(O^2+)/N(H+):', abund_o_ii)which gives:
N(O^2+)/N(H+): 0.0018886330Ne++ Ionic Abundance:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_all_file = os.path.join(base_dir,data_rc_dir, 'rc_collection.fits') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'ne' ion = 'iii' # Ne II ne_ii_rc_data = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion) atom = 'h' ion = 'ii' # H I h_i_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) wavelength=3777.14 ne_ii_3777_flux = 0.056 abund_ne_ii = pyequib.calc_abund_ne_ii_rl(temperature=temperature, density=density, wavelength=wavelength, line_flux=ne_ii_3777_flux, ne_ii_rc_data=ne_ii_rc_data, h_i_aeff_data=h_i_aeff_data) print('N(Ne^2+)/N(H+):', Abund_ne_ii)which gives:
N(Ne^2+)/N(H+): 0.00043376850He I Emissivity:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_he_i_file = os.path.join(base_dir,data_rc_dir, 'rc_he_ii_PFSD12.fits') atom = 'he' ion = 'ii' # He I he_i_rc_data = atomneb.read_aeff_he_i_pfsd12(atom_rc_he_i_file, atom, ion) temperature=np.float64(10000.0) density=np.float64(5000.0) linenum=10# 4471.50 emiss_he_i = pyequib.calc_emiss_he_i_rl(temperature=temperature, density=density, linenum=linenum, he_i_aeff_data=he_i_aeff_data) print('He I Emissivity:', emiss_he_i)which gives:
He I Emissivity: 6.3822830e-26He II Emissivity:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_sh95_file = os.path.join(base_dir,data_rc_dir, 'rc_SH95.fits') atom = 'he' ion = 'iii' # He II he_ii_rc_data = atomneb.read_aeff_sh95(atom_rc_sh95_file, atom, ion) temperature=np.float64(10000.0) density=np.float64(5000.0) emiss_he_ii = pyequib.calc_emiss_he_ii_rl(temperature=temperature, density=density, he_ii_aeff_data=he_ii_aeff_data) print('He II Emissivity:', emiss_he_ii)which gives:
He II Emissivity: 1.4989134e-24C II Emissivity:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_all_file = os.path.join(base_dir,data_rc_dir, 'rc_collection.fits') atom = 'c' ion = 'iii' # C II c_ii_rc_data = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion) temperature=np.float64(10000.0) density=np.float64(5000.0) wavelength=6151.43 emiss_c_ii = pyequib.calc_emiss_c_ii_rl(temperature=temperature, density=density, wavelength=wavelength, c_ii_rc_data=c_ii_rc_data) print('C II Emissivity:', emiss_c_ii)which gives:
C II Emissivity: 5.4719511e-26C III Emissivity:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_ppb91_file = os.path.join(base_dir,data_rc_dir, 'rc_PPB91.fits') atom = 'c' ion = 'iv' # C III c_iii_rc_data = atomneb.read_aeff_ppb91(atom_rc_ppb91_file, atom, ion) temperature=np.float64(10000.0) density=np.float64(5000.0) wavelength=4647.42 emiss_c_iii = pyequib.calc_emiss_c_iii_rl(temperature=temperature, density=density, wavelength=wavelength, c_iii_rc_data=c_iii_rc_data) print('C III Emissivity:', emiss_c_iii)which gives:
C III Emissivity: 7.5749632e-25N II Emissivity:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_all_file = os.path.join(base_dir,data_rc_dir, 'rc_collection.fits') atom = 'n' ion = 'iii' # N II n_ii_rc_data = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion) n_ii_rc_data_br = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion, br=True) wavelength=4442.02 emiss_n_ii = pyequib.calc_emiss_n_ii_rl(temperature=temperature, density=density, wavelength=wavelength, n_ii_rc_br=n_ii_rc_data_br, n_ii_rc_data=n_ii_rc_data) print('N II Emissivity:', emiss_n_ii)which gives:
N II Emissivity: 3.0397397e-26N III Emissivity:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_ppb91_file = os.path.join(base_dir,data_rc_dir, 'rc_PPB91.fits') atom = 'n' ion = 'iv' # N III n_iii_rc_data = atomneb.read_aeff_ppb91(atom_rc_ppb91_file, atom, ion) wavelength=4640.64 emiss_n_iii = pyequib.calc_emiss_n_iii_rl(temperature=temperature, density=density, wavelength=wavelength, n_iii_rc_data=n_iii_rc_data) print('N III Emissivity:', emiss_n_iii)which gives:
N III Emissivity: 4.7908644e-24O II Emissivity:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_all_file = os.path.join(base_dir,data_rc_dir, 'rc_collection.fits') atom = 'o' ion = 'iii' # O II o_ii_rc_data = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion) o_ii_rc_data_br = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion, br=True) wavelength=4613.68 emiss_o_ii = pyequib.calc_emiss_o_ii_rl(temperature=temperature, density=density, wavelength=wavelength, o_ii_rc_br=o_ii_rc_data_br, o_ii_rc_data=o_ii_rc_data) print('O II Emissivity:', emiss_o_ii)which gives:
O II Emissivity: 5.9047319e-27Ne II Emissivity:
import pyequib import atomneb import os base_dir = 'externals/atomneb' data_rc_dir = os.path.join('atomic-data-rc') atom_rc_all_file = os.path.join(base_dir,data_rc_dir, 'rc_collection.fits') atom = 'ne' ion = 'iii' # Ne II ne_ii_rc_data = atomneb.read_aeff_collection(atom_rc_all_file, atom, ion) wavelength=3777.14 emiss_ne_ii = pyequib.calc_emiss_ne_ii_rl(temperature=temperature, density=density, wavelength=wavelength, ne_ii_rc_data=ne_ii_rc_data) print('Ne II Emissivity:', emiss_ne_iiwhich gives:
Ne II Emissivity: 1.5996881e-25
Reddening Unit¶
Reddening Unit which have the API functions for estimating logarithmic extinctions at H-beta and dereddening observed fluxes based on reddening laws and extinctions. Here are some examples of using Reddening Unit.
Reddening Law Function:
import pyequib wavelength=6563.0 r_v=3.1 fl=pyequib.redlaw(wavelength, rv=r_v, ext_law='GAL') print('fl(6563):', fl)which gives:
fl(6563): -0.32013816Galactic Reddening Law Function based on Seaton (1979), Howarth (1983), & CCM (1983):
import pyequib wavelength=6563.0 r_v=3.1 fl=pyequib.redlaw_gal(wavelength, rv=r_v) print('fl(6563):', fl)which gives:
fl(6563): -0.32013816Galactic Reddening Law Function based on Savage & Mathis (1979):
import pyequib wavelength=6563.0 fl=pyequib.redlaw_gal2(wavelength) print('fl(6563):', fl)which gives:
fl(6563): -0.30925984Reddening Law Function based on Cardelli, Clayton & Mathis (1989):
import pyequib wavelength=6563.0 r_v=3.1 fl=pyequib.redlaw_ccm(wavelength, rv=r_v) prin('fl(6563):', fl)which gives:
fl(6563): -0.29756615Galactic Reddening Law Function based on Whitford (1958), Seaton (1977), & Kaler(1976):
import pyequib wavelength=6563.0 fl=pyequib.redlaw_jbk(wavelength) print('fl(6563):', fl)which gives:
fl(6563): -0.33113684Reddening Law Function based on Fitzpatrick & Massa (1990), Fitzpatrick (1999), Misselt (1999):
import pyequib wavelength=6563.0 r_v=3.1 fmlaw='AVGLMC' fl=pyequib.redlaw_fm(wavelength, fmlaw=fmlaw, rv=r_v) print('fl(6563):', fl)which gives:
fl(6563): -0.35053032Reddening Law Function for the Small Magellanic Cloud:
import pyequib wavelength=6563.0 fl=pyequib.redlaw_smc(wavelength) print('fl(6563):', fl)which gives:
fl(6563): -0.22659261Reddening Law Function for the Large Magellanic Cloud:
import pyequib wavelength=6563.0 fl=pyequib.redlaw_lmc(wavelength) print('fl(6563):', fl)which gives:
fl(6563): -0.30871187Dereddening Absolute Flux:
import pyequib wavelength=6563.0 m_ext=1.0 flux=1.0 ext_law='GAL' r_v=3.1 flux_deredden=pyequib.deredden_relflux(wavelength, flux, m_ext, ext_law=ext_law, rv=r_v) print('dereddened flux(6563)', flux_deredden)which gives:
dereddened flux(6563) 4.7847785Dereddening Relative Flux:
import pyequib wavelength=6563.0 m_ext=1.0 flux=1.0 ext_law='GAL' r_v=3.1 flux_deredden=pyequib.deredden_flux(wavelength, flux, m_ext, ext_law=ext_law, rv=r_v) print('dereddened flux(6563)', flux_deredden)which gives:
dereddened flux(6563) 0.47847785