Chemical enrichment of galaxies as the result of organic synthesis in evolved stars
Abstract
Infrared spectroscopic observations have shown that complex organics with mixed aromatic-aliphatic structures are synthesized in large quantities during the late stages of stellar evolution. These organics are ejected into the interstellar medium and spread across the Galaxy. Due to the sturdy structures of these organic particles, they can survive through long journeys across the Galaxy under strong UV background and shock conditions. The implications that stellar organics were embedded in the primordial solar nebula is discussed.
- Publication:
-
Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time
- Pub Date:
- December 2019
- DOI:
- Bibcode:
- 2019IAUS..343..443K
- Keywords:
-
- stars: AGB and post-AGB;
- ISM: molecules;
- planetary nebulae: general