Matches in SemOpenAlex for { <https://semopenalex.org/work/W84905964> ?p ?o ?g. }
Showing items 1 to 90 of
90
with 100 items per page.
- W84905964 abstract "The idea that planetary nebulae (PN) originate from the outer atmospheres of red giant was first proposed by Shkloskii (1956). In the early 1970’s, it was generally believed that PN were created by a sudden envelope ejection; however, the exact nature of the instability responsible for the ejection was not understood. Furthermore, it was not clear how the observed masses of PN are related to the amount of mass ejected, and there was no explanation of how the observed shell morphologies of PN could be created by such instabilities. From the observed sizes and expansion velocities of PN, we know that the dynamical lifetime of a PN is ~10 4 yr. During this period, the star has to evolve from the red side of the H-R diagram, where the envelope is ejected, to the blue side of the H-R diagram, where the stellar temperature is high enough to photoionize the ejecta. If the star evolves too slowly, the nebula will have dispersed into the interstellar medium before it is ionized. If the star evolves too fast, then the nebula will only be illuminated for a short time before the stellar luminosity drops on the white dwarf cooling track (Renzini 1982). It is therefore surprising that PN is such a common phenomenon, with ~30000 PN estimated to be in the Galaxy now." @default.
- W84905964 created "2016-06-24" @default.
- W84905964 creator A5006068776 @default.
- W84905964 date "1992-01-01" @default.
- W84905964 modified "2023-10-16" @default.
- W84905964 title "Planetary Nebula Formation" @default.
- W84905964 cites W155505601 @default.
- W84905964 cites W1972036443 @default.
- W84905964 cites W1984574186 @default.
- W84905964 cites W2003666681 @default.
- W84905964 cites W2005779001 @default.
- W84905964 cites W2009399375 @default.
- W84905964 cites W2011819732 @default.
- W84905964 cites W2019042286 @default.
- W84905964 cites W2069698481 @default.
- W84905964 cites W2100524229 @default.
- W84905964 cites W2164452327 @default.
- W84905964 cites W4243125178 @default.
- W84905964 cites W85711916 @default.
- W84905964 doi "https://doi.org/10.1017/s1539299600009886" @default.
- W84905964 hasPublicationYear "1992" @default.
- W84905964 type Work @default.
- W84905964 sameAs 84905964 @default.
- W84905964 citedByCount "0" @default.
- W84905964 crossrefType "journal-article" @default.
- W84905964 hasAuthorship W84905964A5006068776 @default.
- W84905964 hasBestOaLocation W849059641 @default.
- W84905964 hasConcept C121332964 @default.
- W84905964 hasConcept C12287442 @default.
- W84905964 hasConcept C127592171 @default.
- W84905964 hasConcept C1276947 @default.
- W84905964 hasConcept C150846664 @default.
- W84905964 hasConcept C170084019 @default.
- W84905964 hasConcept C181313176 @default.
- W84905964 hasConcept C187902132 @default.
- W84905964 hasConcept C196939603 @default.
- W84905964 hasConcept C197445014 @default.
- W84905964 hasConcept C2776026716 @default.
- W84905964 hasConcept C2779496878 @default.
- W84905964 hasConcept C2780016924 @default.
- W84905964 hasConcept C44870925 @default.
- W84905964 hasConcept C92150305 @default.
- W84905964 hasConcept C95373548 @default.
- W84905964 hasConcept C97818539 @default.
- W84905964 hasConcept C98444146 @default.
- W84905964 hasConceptScore W84905964C121332964 @default.
- W84905964 hasConceptScore W84905964C12287442 @default.
- W84905964 hasConceptScore W84905964C127592171 @default.
- W84905964 hasConceptScore W84905964C1276947 @default.
- W84905964 hasConceptScore W84905964C150846664 @default.
- W84905964 hasConceptScore W84905964C170084019 @default.
- W84905964 hasConceptScore W84905964C181313176 @default.
- W84905964 hasConceptScore W84905964C187902132 @default.
- W84905964 hasConceptScore W84905964C196939603 @default.
- W84905964 hasConceptScore W84905964C197445014 @default.
- W84905964 hasConceptScore W84905964C2776026716 @default.
- W84905964 hasConceptScore W84905964C2779496878 @default.
- W84905964 hasConceptScore W84905964C2780016924 @default.
- W84905964 hasConceptScore W84905964C44870925 @default.
- W84905964 hasConceptScore W84905964C92150305 @default.
- W84905964 hasConceptScore W84905964C95373548 @default.
- W84905964 hasConceptScore W84905964C97818539 @default.
- W84905964 hasConceptScore W84905964C98444146 @default.
- W84905964 hasLocation W849059641 @default.
- W84905964 hasOpenAccess W84905964 @default.
- W84905964 hasPrimaryLocation W849059641 @default.
- W84905964 hasRelatedWork W1676919215 @default.
- W84905964 hasRelatedWork W1857162908 @default.
- W84905964 hasRelatedWork W1990977215 @default.
- W84905964 hasRelatedWork W2039789422 @default.
- W84905964 hasRelatedWork W2043513973 @default.
- W84905964 hasRelatedWork W2049247811 @default.
- W84905964 hasRelatedWork W2052746604 @default.
- W84905964 hasRelatedWork W2068453264 @default.
- W84905964 hasRelatedWork W2091907032 @default.
- W84905964 hasRelatedWork W2111753297 @default.
- W84905964 hasRelatedWork W2115562329 @default.
- W84905964 hasRelatedWork W2128592489 @default.
- W84905964 hasRelatedWork W2181955068 @default.
- W84905964 hasRelatedWork W2465717993 @default.
- W84905964 hasRelatedWork W2963846426 @default.
- W84905964 hasRelatedWork W3098359405 @default.
- W84905964 hasRelatedWork W3106395288 @default.
- W84905964 hasRelatedWork W3108916093 @default.
- W84905964 hasRelatedWork W3112366300 @default.
- W84905964 hasRelatedWork W316726257 @default.
- W84905964 isParatext "false" @default.
- W84905964 isRetracted "false" @default.
- W84905964 magId "84905964" @default.
- W84905964 workType "article" @default.