The G dwarf Metallicity Distribution and the Problem of Stellar Lifetimes Lower than the Disk Age
| dc.creator | Rocha-Pinto, Helio J. | |
| dc.creator | Maciel, Walter J. | |
| dc.date | 1997-05-12 | |
| dc.date.accessioned | 2026-07-07T02:23:22Z | |
| dc.date.available | 2026-07-07T02:23:22Z | |
| dc.description | We examine the possibility of the inclusion of objects having lifetimes lower than the disk age in the database of recent determinations of the G dwarf metallicity distribution for the solar neighbourhood. As a preliminary step, stars with lifetimes potentially lower than the disk age are identified by means of a relation between (b-y), or mass, and [Fe/H], from evolutionary models of stars at the zero-age main sequence. We apply these results to the G dwarf samples of Rocha-Pinto and Maciel (1996) and Wyse and Gilmore (1995). We show that the majority of G dwarfs in these samples can be regarded as long-lived objects for chemical evolution purposes, provided the disk age is greater than 12 Gyr. We also find that the G dwarf problem is not an effect of the metallicity dependence of the stellar lifetimes. | |
| dc.description | tex file plus 5 postscript figures. Plain Tex, 12 pages. Accepted for publication in A&A | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9705080 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9705080 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/11219 | |
| dc.subject | Astrophysics | |
| dc.title | The G dwarf Metallicity Distribution and the Problem of Stellar Lifetimes Lower than the Disk Age | |
| dc.type | text |