The Chemical Evolution of Galaxies by Successive Starbursts
| dc.creator | Contini, T. | |
| dc.creator | Coziol, R. | |
| dc.creator | Considere, S. | |
| dc.creator | Davoust, E. | |
| dc.creator | Reyes, R. E. Carlos | |
| dc.date | 1999-05-27 | |
| dc.date.accessioned | 2026-07-07T02:31:44Z | |
| dc.date.available | 2026-07-07T02:31:44Z | |
| dc.description | We propose an evolutionary scenario by successive bursts of star formation to reproduce the chemical properties of massive nearby Starburst Nucleus Galaxies (SBNGs). The N/O abundance ratios in SBNGs are 0.2 dex higher than in normal HII regions observed in the disks of late-type spirals. The variation of the N/O ratio as a function of metallicity follows a "primary + secondary" relation, but the increase of nitrogen does not appear as a continuous process. Assuming that nitrogen is produced by intermediate-mass stars, we show that our observations are consistent with a model where the bulk of nitrogen in SBNGs was formed during past sequences of bursts of star formation which probably started 2 or 3 Gyrs in the past. | |
| dc.description | Contributed talk to the 34th Rencontres de Moriond, 13-20 March 1999, ``Building Galaxies: from the Primordial Universe to the Present'', ed F. Hammer, T. X. Thuan, V. Cayatte, B. Guiderdoni & J. Tran Thanh Van (Ed. Frontieres). 4 pages including 2 figures | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9905359 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9905359 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/14260 | |
| dc.subject | Astrophysics | |
| dc.title | The Chemical Evolution of Galaxies by Successive Starbursts | |
| dc.type | text |