Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apjs..112..193f&link_type=abstract
Astrophysical Journal Supplement v.112, p.193
Astronomy and Astrophysics
Astronomy
6
Ultraviolet: Ism, Ism: Planetary Nebulae: Individual Ngc Number: Ngc 2371-2, Line: Identification
Scientific paper
Early IUE low-dispersion SWP and LWR spectra have been reexamined by means of refined current data reduction routines. These spectra contain much more information than was reported in 1981. A high-dispersion SWP spectrum was obtained in 1994 from which more than 80 emission and absorption features were identified, and log Ne = 3.0 +/- 0.2 cm-3 was determined from the C III] F( lambda 1907/ lambda 1909) ratio. Electron densities were also derived from the Si III] F( lambda 1883/ lambda 1892) and dereddened [Ne IV] F[ lambda 1602/( lambda 2422 + lambda 2424)] line ratios. The terminal wind velocity of the C IV P Cyg feature was measured from the low- and high-resolution spectra. Approximately 50 of the strongest Fe VI and Fe V photospheric absorptions are identified.
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