Home ˜˜ Download

SYNOW (SYnthetic NOW)



SYNOW 2.0

New features include:
  • wavelength binning (detla_v) - Line bin width can be made as narrow as desired.

  • gaussian line profiles (dprof='g') - In addition to powerlaw (dprof='p') and exponential (dprof='e') radial distributions of line optical depth, a gaussian distribution is now available. This eliminates the need to use a discontinuous line optical depth distribution when detaching a line from the photosphere. When using dprof, note that declaring a particular distribution will tell SYNOW to ignore irrelevant parameters for that species (i.e. if dprof='g', then SYNOW will ignore pwrlawin, vmine, vmaxe, and ve).

  • vmaxg - sets the velocity for the gaussian profiles.

  • sigma_v - standard deviation of gaussian profiles. Typical values range from 1 to 3.

  • When using power law distributions it no longer is necessary to use the same power law index for all ions.

  • When two or more line optical depth distributions that overlap in velocity are used for an ion, the optical depths are now simply added.


Sample input file:

&parms vphot = 13000 vmax = 40000.0 tbb = 20000 ea = 3800.0 eb =25000.0 nlam = 3500 flambda = .false. taumin = 0.01 grid = 32 zeta = 1.0 stspec = 4300.0 numref = 8 delta_v = 300.0 an = 14, 16, 20, 26, 26, 12, 8, 16, 28, 16, 24, 22, 13, 14, 28, ai = 1, 1, 1, 1, 2, 1, 0, 0, 1, 0, 1, 1, 2, 1, 1, tau1 = 8, 40, 10,0.5,0.8,0.6,0.3,1.0,0.0,1.0,0.0, .2,1e3,1e2,1e3, pwrlawin = 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, vmine= 0, 0, 0, 18, 0, 0, 0, 0, 0, 0, 0, 13, 3, 3, 3, vmaxe= 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, ve = 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, vmaxg = 14, 11, 15, 0, 0, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, sigma_v = 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0,4.5,4.5,4.5,4.5, temp = 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7,4.5,4.5,4.5,4.5, dprof = 'g','g','g','e','e','g','e','g','e','e','e','e','e','e','e', /