The chemical composition of the rare J-type carbon stars
| dc.creator | Abia, Carlos | |
| dc.creator | Isern, Jordi | |
| dc.date | 1999-12-01 | |
| dc.date.accessioned | 2026-07-07T02:34:44Z | |
| dc.date.available | 2026-07-07T02:34:44Z | |
| dc.description | Abundances of lithium, heavy elements and carbon isotope ratios have been derived in 12 J-type galactic carbon stars. The abundance analysis shows that in these stars the abundances of s-process elements with respect to the metallicity are nearly solar. Tc is not present in most of them. The Rb abundances, obtained from the resonance 7800 Å RbI line, are surprisingly low, probably due to stroong non-LTE effects. Lithium and $^{13}$C are found to be enhanced in all the stars. These results are used to discuss the origin of J-stars. | |
| dc.description | 8 pages, 2 figures, 1 table. Presented in "The Abundances Changes in AGB Stars", Mem. Soc. Astr. It., Monte Porzio, Italia 1999. Needs memsait.sty | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9912025 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9912025 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/15361 | |
| dc.subject | Astrophysics | |
| dc.title | The chemical composition of the rare J-type carbon stars | |
| dc.type | text |