Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....88..127p&link_type=abstract
Astronomy and Astrophysics, vol. 88, no. 1-2, Aug. 1980, p. 127-134.
Astronomy and Astrophysics
Astrophysics
2
Red Giant Stars, Stellar Envelopes, Stellar Models, Abundance, Interstellar Matter, Main Sequence Stars, Planetary Nebulae, Stellar Evolution, Stellar Mass, Stellar Mass Ejection
Scientific paper
The questions regarding the maximum mass of a main-sequence star that becomes a white-dwarf; the mass of single white dwarfs; the enhanced abundance ratios of N/O and He/H in planetary nebulae and the He3 abundance in planetaries and in the interstellar medium are shown to be interrelated. We find that a model star of 6 Msun. on the main-sequence develops prior to the double-shell source phase a CO core of 0.82 Msun, an enrichment of 27% in the He/H ratio and a N/O ratio 5.5 times higher than the solar value. These results indicate that a 6 Msun star is a plausible planetary-nebula progenitor.
We also show that intermediate mass stars, ejecting most of their mass during the red-giant stage, are important contributors of C and 0 isotopes and of He3 to the interstellar medium.
Prialnik Dina
Shaviv Giora
No associations
LandOfFree
The relationship between the envelope composition of a 6 solar-mass red-giant model and its future evolution 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 relationship between the envelope composition of a 6 solar-mass red-giant model and its future evolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The relationship between the envelope composition of a 6 solar-mass red-giant model and its future evolution will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1273358