Oxygen in the Galactic thin and thick disks
| dc.creator | Bensby, T. | |
| dc.creator | Feltzing, S. | |
| dc.creator | Lundstrom, I. | |
| dc.date | 2002-12-02 | |
| dc.date.accessioned | 2026-07-07T02:06:40Z | |
| dc.date.available | 2026-07-07T02:06:40Z | |
| dc.description | First results from a study into the abundance trends of oxygen in the Galactic thin and thick disks are presented. Oxygen abundances for 21 thick disk and 42 thin disk F and G dwarf stars based on very high resolution spectra (R\sim 215000) and high signal-to-noise (S/N>400) of the faint forbidden oxygen line at 6300 A have been determined. We find that [O/Fe] for the thick disk stars show a turn-down, i.e. the ``knee'', at [Fe/H] between -0.4 and -0.3 dex indicating the onset of SNe type Ia. The thin disk stars on the other hand show a shallow decrease going from [Fe/H] \sim -0.7 to the highest metallicities with no apparent ``knee'' present indicating a slower star formation history. | |
| dc.description | To be published in "CNO in the Universe", ASP Conference Series, C. Charbonnel, D. Schaerer & G. Meynet (eds.) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0212029 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0212029 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/5440 | |
| dc.subject | Astrophysics | |
| dc.title | Oxygen in the Galactic thin and thick disks | |
| dc.type | text |