The old open clusters Saurer A, B and C revisited
We report deep (V ≈ 24.0) VI CCD photometry of three fields centred in the regions of the old open clusters Saurer A, B and C. In the case of Saurer A, which is considered one of the oldest known open clusters, we also provide a comparison field. From the analysis of the photometry we claim that Sau...
Guardado en:
| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2003
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/84507 |
| Aporte de: |
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I19-R120-10915-84507 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Hertzsprung-Russell (HR) diagram Open clusters and associations: general Open clusters and associations: individual: Saurer A Open clusters and associations: individual: Saurer B Open clusters and associations: individual: Saurer C |
| spellingShingle |
Ciencias Astronómicas Hertzsprung-Russell (HR) diagram Open clusters and associations: general Open clusters and associations: individual: Saurer A Open clusters and associations: individual: Saurer B Open clusters and associations: individual: Saurer C Carraro, Giovanni Baume, Gustavo The old open clusters Saurer A, B and C revisited |
| topic_facet |
Ciencias Astronómicas Hertzsprung-Russell (HR) diagram Open clusters and associations: general Open clusters and associations: individual: Saurer A Open clusters and associations: individual: Saurer B Open clusters and associations: individual: Saurer C |
| description |
We report deep (V ≈ 24.0) VI CCD photometry of three fields centred in the regions of the old open clusters Saurer A, B and C. In the case of Saurer A, which is considered one of the oldest known open clusters, we also provide a comparison field. From the analysis of the photometry we claim that Saurer A is as old as M67 (≈5 Gyr), but more metal-poor (Z = 0.008). Moreover, it turns out to be the open cluster with the largest galactocentric distance so far detected. As for Saurer B, it closely resembles NGC 2158, and indeed is of intermediate age (1.8-2.2 Gyr) and significantly reddened. In this case we revise both the age and the distance with respect to previous studies, but we are not able to establish clearly the cluster metal abundance. Finally, Saurer C has an age of about 2 Gyr, but we emphasize that the precise determination of its properties is hampered by the heavy field star contamination. All of the photometry is available at the WEBDA data base: http://obswww.unige.ch/webda/navigation.html. |
| format |
Articulo Articulo |
| author |
Carraro, Giovanni Baume, Gustavo |
| author_facet |
Carraro, Giovanni Baume, Gustavo |
| author_sort |
Carraro, Giovanni |
| title |
The old open clusters Saurer A, B and C revisited |
| title_short |
The old open clusters Saurer A, B and C revisited |
| title_full |
The old open clusters Saurer A, B and C revisited |
| title_fullStr |
The old open clusters Saurer A, B and C revisited |
| title_full_unstemmed |
The old open clusters Saurer A, B and C revisited |
| title_sort |
old open clusters saurer a, b and c revisited |
| publishDate |
2003 |
| url |
http://sedici.unlp.edu.ar/handle/10915/84507 |
| work_keys_str_mv |
AT carrarogiovanni theoldopenclusterssaurerabandcrevisited AT baumegustavo theoldopenclusterssaurerabandcrevisited AT carrarogiovanni oldopenclusterssaurerabandcrevisited AT baumegustavo oldopenclusterssaurerabandcrevisited |
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Repositorios |
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1764820488816689152 |