Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87..555f&link_type=abstract
Astronomical Journal, vol. 87, Mar. 1982, p. 555-557.
Astronomy and Astrophysics
Astronomy
25
Astronomical Spectroscopy, Interstellar Extinction, Planetary Nebulae, Spaceborne Astronomy, Ultraviolet Absorption, Absorption Spectra, Astronomical Netherlands Satellite, Helium, Iue
Scientific paper
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.
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