| Author | dc.contributor.author | Buson, L. M. | |
| Author | dc.contributor.author | Bertone, E. | es_CL |
| Author | dc.contributor.author | Buzzoni, A. | es_CL |
| Author | dc.contributor.author | Carraro, Giovanni | es_CL |
| Admission date | dc.date.accessioned | 2008-12-15T11:52:05Z | |
| Available date | dc.date.available | 2008-12-15T11:52:05Z | |
| Publication date | dc.date.issued | 2006 | |
| Cita de ítem | dc.identifier.citation | BALTIC ASTRONOMY Volume: 15 Issue: 1 Pages: 49-52 Published: 2006 | en |
| Identifier | dc.identifier.issn | 1392-0049 | |
| Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/124776 | |
| Abstract | dc.description.abstract | Relying on U and B imagery at the Italian Telescopic, Nazionale Galileo (TNG), we report here the discovery of a sample of 13 new UV-bright post-HB candidate stars in the field of the Galactic open cluster NGC 6791. Owing to its super-solar metal content ([Fe/H] greater than or similar to 0.2 dex) and estimated age (t greater than or similar to 8 Gyr), this cluster represents the nearest and ideal stellar aggregate to match the distinctive properties of the evolved stellar populations possibly ruling the UV-upturn phenomenon in elliptical galaxies and bulges of spirals. Our ongoing spectroscopic follow-up of this unique UV-bright sample will allow us to assess - once cluster membership of the candidates is properly checked the real nature (e.g., sdB, sdO, AGB-manque or EHB stars) of these hot sources and their link with the ultraviolet excess emerging from low-mass, metal-rich evolutionary environments of external galaxies. | en |
| Lenguage | dc.language.iso | en | en |
| Publisher | dc.publisher | INST THEORETICAL PHYSICS ASTRONOMY | en |
| Keywords | dc.subject | EVOLVED STELLAR POPULATIONS | en |
| Título | dc.title | New candidate EHB stars in the open cluster NGC 6791: Looking locally into the UV-upturn phenomenon | en |
| Document type | dc.type | Artículo de revista | |
