| dc.creator | Baume, Gustavo | |
| dc.creator | Vázquez, Rubén Ángel | |
| dc.creator | Carraro, Giovanni | |
| dc.date | 2004 | |
| dc.date | 2019-10-16T15:31:47Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/83384 | |
| dc.identifier | issn:0035-8711 | |
| dc.description | We report on a deep CCD UBV(RI) C photometric survey in the region of the young open cluster Markarian 50. The new photometric data allow us to extend the cluster membership down to V ≈ 17.5, about 2 mag deeper than any previous investigation. On the basis of these data we derive a distance d = 3460 ± 350 pc (V o - M v = 12.7 ± 0.2), which turns out to be only slightly lower than previous estimates. The cluster presents differential reddening, with E(B-V) values ranging from 0.69 to 1.1. The brightest member (HD 219460) is a double star, which we separate photometrically for the first time, providing individual magnitudes and colours for each component. One of them is a Wolf-Rayet (WR) star and, according to evolutionary models, the mass of its progenitor should be greater than ∼20 M⊙. The age obtained for the cluster is 7.5 ± 2 Myr and the mass function for the most massive stars (M > 1 M⊙) presents a slope x ≈ 1.0. | |
| dc.description | Facultad de Ciencias Astronómicas y Geofísicas | |
| dc.format | application/pdf | |
| dc.format | 475-484 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
| dc.subject | Ciencias Astronómicas | |
| dc.subject | Open clusters and associations: individual: Markarian 50 | |
| dc.subject | Stars: imaging | |
| dc.subject | Stars: individual: HD 219460 | |
| dc.subject | Stars: individual: WR 157 | |
| dc.subject | Stars: luminosity function, mass function | |
| dc.subject | Stars: Wolf-Rayet | |
| dc.title | The young open cluster Markarian 50 | |
| dc.type | Articulo | |
| dc.type | Articulo | |
