Proto-planetary nebulae
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Information for Authority record
Name (Hebrew)
ערפיליות פרוטו-פלנטריות
Name (Latin)
Proto-planetary nebulae
Name (Arabic)
سديم كوكبي أولي
Other forms of name
Post-AGB objects (Astrophysics)
Post-asymptotic giant branch objects (Astrophysics)
PPNe (Astrophysics)
Protoplanetary nebulae
See Also From tracing topical name
Planetary nebulae
MARC
MARC
Other Identifiers
Wikidata:
Q2035809
Library of congress:
sh2001002948
Sources of Information
- Work cat.: 2001038362: Post-AGB objects as a phase of stellar evolution, 2001:CIP pref. (the term proto-planetary nebulae (PPNe; also called post-asymptotic giant branch, or shortly, post-AGB objects) created to express the belief that in the near future these objects will become planetary nebulae)
- Dict. astron.(protoplanetary nebula: an early stage in the formation of a planetary nebula in which the central star has shed its outer layers exposing the hot stellar core from which ultraviolet light begins to ionize the surrounding cloud of gas and dust, and for a brief phase the circumstellar envelope contains both hot ionized material near the star and cool molecular material far from the star)
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File:An interstellar butterfly.jpg
NASA, ESA, and R. Sahai (Jet Propulsion Laboratory), CC BY 4.0
File:He1523a.jpg
ESO, European Southern Observatory, CC BY 4.0
Wikipedia description:
A protoplanetary nebula or preplanetary nebula (PPN, plural PPNe) is an astronomical object which is at the short-lived episode during a star's rapid evolution between the late asymptotic giant branch (LAGB)[a] phase and the subsequent planetary nebula (PN) phase. A PPN emits strongly in infrared radiation, and is a kind of reflection nebula. It is the second-from-the-last high-luminosity evolution phase in the life cycle of intermediate-mass stars (1–8 M☉).
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