Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...245..154k&link_type=abstract
Astrophysical Journal, Part 1, vol. 245, Apr. 1, 1981, p. 154-162. Research supported by the Research Corp.
Astronomy and Astrophysics
Astrophysics
60
Abundance, Chemical Composition, Hot Stars, Nebulae, Stellar Structure, Wolf-Rayet Stars, Helium, Nitrogen, Orion Nebula, Ring Structures, Stellar Spectrophotometry, Stellar Winds
Scientific paper
Spectrophotometric observations of NGC 6888, a ring nebula surrounding the Population I Wolf-Rayet star HD 192163, have been obtained in order to determine the physical conditions and chemical abundances in this object. It is concluded that NGC 6888 is enriched in nitrogen and helium by factors of about 9 and 2 respectively, compared with the Orion Nebula. This enrichment is a result of contamination of the ambient abundances by the nitrogen-rich and helium-rich wind from the central Wolf-Rayet star. NGC 6888 has been interpreted as an interstellar bubble, and an approximate age for the nebula of 18,000 years has been calculated. The fraction of nebular mass contributed by the central star can be estimated from published stellar abundances; it is calculated that the stellar wind has provided approximately 10% of the observed nebular mass.
No associations
LandOfFree
The chemical composition and origin of the Wolf-Rayet ring nebula NGC 6888 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The chemical composition and origin of the Wolf-Rayet ring nebula NGC 6888, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The chemical composition and origin of the Wolf-Rayet ring nebula NGC 6888 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-781601