E(B-V) extinction values for 24 planetary nebulae derived from IUE data.
Abstract
Excellent agreement was found for E(B - V) values for nine planetary nebulae observed in common by IUE and ANS, derived from a strong 2200A absorption feature. E(B - V) values for seven additional objects with moderately strong 2200A absorption were determined. A third group of eight planetary nebulae for which the 2200A absorption feature is marginal or absent had E(B - V) extinctions determined from the observed He II I(1640A)/I(4686A) ratio. A comparison with optical and radio data is included.
- Publication:
-
The Astronomical Journal
- Pub Date:
- March 1982
- DOI:
- 10.1086/113128
- Bibcode:
- 1982AJ.....87..555F
- Keywords:
-
- Astronomical Spectroscopy;
- Interstellar Extinction;
- Planetary Nebulae;
- Spaceborne Astronomy;
- Ultraviolet Absorption;
- Absorption Spectra;
- Astronomical Netherlands Satellite;
- Helium;
- Iue;
- Astronomy