The young open cluster Markarian 50
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...
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Formato: | Articulo |
Lenguaje: | Inglés |
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2004
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/83384 |
Aporte de: |
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I19-R120-10915-83384 |
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dspace |
institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Astronómicas Open clusters and associations: individual: Markarian 50 Stars: imaging Stars: individual: HD 219460 Stars: individual: WR 157 Stars: luminosity function, mass function Stars: Wolf-Rayet |
spellingShingle |
Ciencias Astronómicas Open clusters and associations: individual: Markarian 50 Stars: imaging Stars: individual: HD 219460 Stars: individual: WR 157 Stars: luminosity function, mass function Stars: Wolf-Rayet Baume, Gustavo Vázquez, Rubén Ángel Carraro, Giovanni The young open cluster Markarian 50 |
topic_facet |
Ciencias Astronómicas Open clusters and associations: individual: Markarian 50 Stars: imaging Stars: individual: HD 219460 Stars: individual: WR 157 Stars: luminosity function, mass function Stars: Wolf-Rayet |
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. |
format |
Articulo Articulo |
author |
Baume, Gustavo Vázquez, Rubén Ángel Carraro, Giovanni |
author_facet |
Baume, Gustavo Vázquez, Rubén Ángel Carraro, Giovanni |
author_sort |
Baume, Gustavo |
title |
The young open cluster Markarian 50 |
title_short |
The young open cluster Markarian 50 |
title_full |
The young open cluster Markarian 50 |
title_fullStr |
The young open cluster Markarian 50 |
title_full_unstemmed |
The young open cluster Markarian 50 |
title_sort |
young open cluster markarian 50 |
publishDate |
2004 |
url |
http://sedici.unlp.edu.ar/handle/10915/83384 |
work_keys_str_mv |
AT baumegustavo theyoungopenclustermarkarian50 AT vazquezrubenangel theyoungopenclustermarkarian50 AT carrarogiovanni theyoungopenclustermarkarian50 AT baumegustavo youngopenclustermarkarian50 AT vazquezrubenangel youngopenclustermarkarian50 AT carrarogiovanni youngopenclustermarkarian50 |
bdutipo_str |
Repositorios |
_version_ |
1764820488560836611 |