Balmer Continuum
balmer_options = {
"R_const" :{"bool":True, "R_val":1.0}, # ratio between balmer continuum and higher-order lines
"balmer_amp_const" :{"bool":False, "balmer_amp_val":1.0}, # hold amplitude constant?
"balmer_disp_const" :{"bool":True, "balmer_disp_val":5000.0}, # hold dispersion constant?
"balmer_voff_const" :{"bool":True, "balmer_voff_val":0.0}, # hold velocity constant?
"Teff_const" :{"bool":True, "Teff_val":15000.0}, # effective temperature
"tau_const" :{"bool":True, "tau_val":1.0}, # optical depth
}