| dc.creator | Carraro, Giovanni | |
| dc.creator | Moitinho, André | |
| dc.creator | Zoccali, Manuela | |
| dc.creator | Vázquez, Rubén Ángel | |
| dc.creator | Baume, Gustavo | |
| dc.date | 2007-02-27 | |
| dc.date | 2019-10-11T13:03:14Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/83126 | |
| dc.identifier | issn:0004-6256 | |
| dc.description | We perform a detailed photometric study of the stellar populations in a Galactic field at l = 232°, b = -6° in the Canis Major (CMa) constellation. We present the first U, B, V, I photometry of the old open cluster Auner 1 and determine it to be ≈3.25 Gyr old and to lie 8.9 kpc from the Sun. In the background of the cluster, at more than 9 kpc, we detect a young population most likely associated with the Norma-Cygnus spiral arm. Furthermore, we detect the signature of an older population and identify its turnoff and red giant branch. This population is found to have a mean age of 7 Gyr and a mean metallicity of Z = 0.006. We reconstruct the geometry of the stellar distribution and argue that this older population, often associated with the CMa "galaxy," in fact belongs to the warped old thin- and thick-disk components along this line of sight. | |
| dc.description | Facultad de Ciencias Astronómicas y Geofísicas | |
| dc.format | application/pdf | |
| dc.format | 1058-1066 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by/4.0/ | |
| dc.rights | Creative Commons Attribution 4.0 International (CC BY 4.0) | |
| dc.subject | Ciencias Astronómicas | |
| dc.subject | Galaxy: general | |
| dc.subject | Hertzsprung-Russell diagram | |
| dc.subject | Open clusters and associations: general | |
| dc.subject | Open clusters and associations: individual (Auner 1) | |
| dc.title | Photometry of a galactic field at l = 232°. b = -6°: The old open cluster Auner 1, The Norma-Cygnus spiral arm, and the signature of the warped galactic thick disk | |
| dc.type | Articulo | |
| dc.type | Articulo | |
