| Issue |
A&A
Volume 670, February 2023
|
|
|---|---|---|
| Article Number | A105 | |
| Number of page(s) | 8 | |
| Section | Galactic structure, stellar clusters and populations | |
| DOI | https://doi.org/10.1051/0004-6361/202244743 | |
| Published online | 13 February 2023 | |
Number of stars in the Sun’s birth cluster revisited
1
Japan Agency for Marine-Earth Science and Technology, 3173-25, Showa-machi, Kanazawa-ku, Yokohama, Kanagawa 236-0001, Japan
e-mail: arakawas@jamstec.go.jp
2
National Astoronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Received:
12
August
2022
Accepted:
28
December
2022
The Sun is thought to have been formed within a star cluster. The coexistence of 26Al-rich and 26Al-poor calcium–aluminum-rich inclusions indicates that a direct injection of 26Al-rich materials from a nearby core-collapse supernova would be expected to occur in the first 105 years of the existence of the Solar System. Therefore, at least one core-collapse supernova ought to occur within the duration of star formation in the Sun’s birth cluster. Here, we revisit the number of stars in the Sun’s birth cluster from the point of view of the probability of experiencing at least one core-collapse supernova within the finite duration of star formation within the birth cluster. We find that the number of stars in the birth cluster may be significantly greater than that previously considered, depending on the duration of star formation.
Key words: meteorites, meteors, meteoroids / supernovae: general / stars: Wolf-Rayet / open clusters and associations: general
© The Authors 2023
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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