The Stellar Populations of dE galaxies in nearby Groups
| dc.creator | Da Costa, G. S. | |
| dc.date | 2007-01-02 | |
| dc.date.accessioned | 2026-07-07T07:38:07Z | |
| dc.date.available | 2026-07-07T07:38:07Z | |
| dc.description | In this contribution initial results from colour-magnitude diagrams for five dEs in the M81 group are presented. The colour-magnitude diagrams, derived from HST/ACS images, reach well below the red giant branch tip and allow evaluation of distances and mean metallicities. Further, the intermediate-age upper-AGB stars seen in the diagrams allow estimates of the epochs of the last significant episode of star formation in the dEs. These epochs, and the relative numbers of upper-AGB to red giant branch stars, vary significantly from dE to dE. Preliminary inferences from similar HST/ACS data for five early-type dwarfs in the Sculptor group are also discussed. | |
| dc.description | 6 pages, 3 figs, to appear in "From Stars to Galaxies", eds Vallenari, Tantalo, Portinari & Morretti, ASP Conf. Series | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0701051 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0701051 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/121005 | |
| dc.subject | Astrophysics | |
| dc.title | The Stellar Populations of dE galaxies in nearby Groups | |
| dc.type | text |