EMILI line-identification in IC 418 spectrum (Sharpee+, 2003)

Details EMILI line-identification in IC 418 spectrum (Sharpee+, 2003) EMILI line-identification in IC 418 spectrum (Sharpee+, 2003)

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ycat..21490157s&link_type=abstract

VizieR On-line Data Catalog: J/ApJS/149/157. Originally published in: 2003ApJS..149..157S

Mathematics

Logic

Planetary Nebulae, Spectroscopy

Scientific paper

EMILI is a stand-alone FORTRAN code that runs in 510 minutes on any UNIX, LINUX, or Windows computer that has a suitable FORTRAN compiler. It is publicly available over the Web at http://www.pa.msu.edu/astro/software/emili/ with a primer and has the following logical flow: for each line in a list of unidentified observed lines submitted to EMILI, a transition database is queried for all transitions within the immediate wavelength vicinity. A separate list of preidentified "signature lines" from the same spectrum is used to establish kinematic and ionization models of the observed object. EMILI calculates a predicted template flux for all candidate emission lines considered in the line list based upon these models and upon the characteristics of each transition. For each candidate transition in the database EMILI searches the line list to identify other transitions from the same multiplet. EMILI then ranks each candidate ID for an observed feature according to wavelength agreement, strongest relative predicted flux, and the numbers of multiplet members detected, and it presents the results to the user for final ID determination.
(1 data file).

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