Poster presented by . Luridiana, C. Morisset, R.A. Shaw, D. Díaz-González at the IAU Symposium 283, Planetary Nebulae: an Eye to the Future, 25-29 July 2011, Tenerife, Spain.
From nebular to pynebular: a new package for the analysis of emission lines
1. Nebular, a long-time reference
package for the analysis of emission
lines, started as a simple Fortran
program and evolved into a
nebular is being migrated powerful IRAF package.
to a new environment, to
make it more powerful In essence, nebular works by
solving the equilibrium equations
and user-friendly...
for an n-level atom.
These are some of the things nebular is able to compute:
- physical conditions from suitable dignostic line ratios.
- level populations, critical densities and line emissivities
- 3-zone nebula models from sets of line ratios
- dereddened line intensities
Now nebular is being recasted in python and will
become pyneb.
pyneb is being designed to be more user-friendly
and powerful than its predecessor.
Here are some of the improvements: Emission maps as a function of
temperature and density
Fully user-defined and more
Fully user-selectable atomic data numerous diagnostics
y!
he e's
r s
t he line
!
IR too
Contour maps of diagnostic line
ratios as a function of Te and Ne
Full access to input data or intermediate and YES! a web interface:
quantities a long way to go, but here's
a prototype:
One of them is a tool for the
Dynamic plotting of extinction
And there are many, many more features we
intend to implement... for example:
- Computation of elemental abundance using ICFs.
- User-selectable and user-definable ICFs
- Tools to perform error analysis of Ne, Te and
abundances
- Ionic abundances for He and other elements from
recombination lines
Wanna be a beta tester? Sign here or
send us an email (pynebular@gmail.com)
Valentina Luridiana (vale AT iac.es
References Wishing a particular feature was there? ChristopheMorisset chris.morisset@gmail.com
De Robertis, M. M., Dufour, R. J., & Hunt, R. W. 1987, JRASC, 81, 195 Tell us or describe it here: Dick Shaw: shaw@ AT noao.edu
Shaw, R. A., de La Pena, M. D., Katsanis, R. M., & Williams, R. E. 1998, in ADASS VII,
R. Albrecht, R. N. Hook, & H. A. Bushouse eds, ASP Conf. Series, 145, 192
Shaw, R. A., & Dufour, R. J. 1995, PASP, 107, 896
Acknowledgments: Manuel Núñez-Díaz kindly gave us his HH 204 data
