ATTENZIONE! IL REPOSITORY E’ APERTO ESCLUSIVAMENTE ALL’IMMISSIONE DEI RAPPORTI TECNICI (COLLEZIONE 4.01). NON E’ POSSIBILE INSERIRE PRODOTTI IN TUTTE LE ALTRE COLLEZIONI, A CAUSA DI PROBLEMI TECNICI. THE REPOSITORY IS OPEN EXCLUSIVELY FOR THE SUBMISSION OF TECHNICAL REPORTS (COLLECTION 4.01). SUBMISSIONS TO ALL OTHER COLLECTIONS ARE TEMPORARILY UNAVAILABLE, DUE TO TECHNICAL ISSUES.
 

Evolution and Final Fate of Solar Metallicity Stars in the Mass Range 7-15 M ⊙. I. The Transition from Asymptotic Giant Branch to Super-AGB Stars, Electron Capture, and Core-collapse Supernova Progenitors

Journal
Date Issued
2024
Author(s)
•
•
•
Nomoto, Ken’ichi
DOI
Abstract
According to a standard initial mass function, stars in the range 7-12 M ⊙ constitute ∼50% (by number) of the stars more massive than ∼7 M ⊙, but in spite of this, their evolutionary properties, and in particular their final fate, are still scarcely studied. In this paper, we present a detailed study of the evolutionary properties of solar metallicity nonrotating stars in the range 7-15 M ⊙, from the pre-main-sequence phase up to the presupernova stage or an advanced stage of the thermally pulsing phase, depending on the initial mass. We find that (1) the 7.00 M ⊙ star develops a degenerate CO core and evolves as a classical asymptotic giant branch (AGB) star in the sense that it does not ignite the C-burning reactions, (2) stars with initial mass M ≥ 9.22 M ⊙ end their lives as core-collapse supernovae, (3) stars in the range 7.50 ≤ M/M ⊙ ≤ 9.20 develop a degenerate ONeMg core and evolve through the thermally pulsing super-AGB phase, (4) stars in the mass range 7.50 ≤ M/M ⊙ ≤ 8.00 end their lives as hybrid CO/ONeMg or ONeMg WDs, and (5) stars with initial mass in the range 8.50 ≤ M/M ⊙ ≤ 9.20 may potentially explode as electron-capture supernovae.
Volume
270
Issue
2
Start page
29
Uri
Url
Issn Identifier
0067-0049
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

2024ApJS_270_29part1.pdf

Description
Articolo Prima Parte
Size

9.77 MB

Format

Adobe PDF

Checksum (MD5)

f9c633b405fda54ca636871d1613232b

Loading...
Thumbnail Image
Name

2024ApJS_270_29part2.pdf

Description
Articolo Seconda Parte
Size

7.01 MB

Format

Adobe PDF

Checksum (MD5)

fb98a49a0cc9aabda1cae611c34b19b4