The open cluster Havlen-Moffat No. 1 revisited

A deep CCD UBVRI photometric survey combined with UBVRI polarimetric observations of 21 bright stars was carried out in the region of the open cluster Havlen-Moffat No. 1. Our data reveal that the extinction law in this cluster is variable and that six cluster stars show very high polarisation value...

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Detalles Bibliográficos
Autores principales: Vázquez, Rubén Ángel, Baume, Gustavo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Astronómicas
Cluster: open
Individual: Havlen-Moffat No. 1
ISM: dust, extinction
Stars: imaging
Stars: luminosity function, mass function
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83579
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83579
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
Cluster: open
Individual: Havlen-Moffat No. 1
ISM: dust, extinction
Stars: imaging
Stars: luminosity function, mass function
spellingShingle Ciencias Astronómicas
Cluster: open
Individual: Havlen-Moffat No. 1
ISM: dust, extinction
Stars: imaging
Stars: luminosity function, mass function
Vázquez, Rubén Ángel
Baume, Gustavo
The open cluster Havlen-Moffat No. 1 revisited
topic_facet Ciencias Astronómicas
Cluster: open
Individual: Havlen-Moffat No. 1
ISM: dust, extinction
Stars: imaging
Stars: luminosity function, mass function
description A deep CCD UBVRI photometric survey combined with UBVRI polarimetric observations of 21 bright stars was carried out in the region of the open cluster Havlen-Moffat No. 1. Our data reveal that the extinction law in this cluster is variable and that six cluster stars show very high polarisation values (>4%), probably because of the presence of a nearby small dust cloud. The cluster is at a distance of d = 3300 pc, it is 2-4 Myr old and the initial mass function of its most massive stars (M > 3 M⊙) has a flat slope of x ≈ 0.7. As an additional result, it was possible to reconcile the absolute magnitudes of the two WN7-type members using the R-values valid in the regions where they are located.
format Articulo
Articulo
author Vázquez, Rubén Ángel
Baume, Gustavo
author_facet Vázquez, Rubén Ángel
Baume, Gustavo
author_sort Vázquez, Rubén Ángel
title The open cluster Havlen-Moffat No. 1 revisited
title_short The open cluster Havlen-Moffat No. 1 revisited
title_full The open cluster Havlen-Moffat No. 1 revisited
title_fullStr The open cluster Havlen-Moffat No. 1 revisited
title_full_unstemmed The open cluster Havlen-Moffat No. 1 revisited
title_sort open cluster havlen-moffat no. 1 revisited
publishDate 2001
url http://sedici.unlp.edu.ar/handle/10915/83579
work_keys_str_mv AT vazquezrubenangel theopenclusterhavlenmoffatno1revisited
AT baumegustavo theopenclusterhavlenmoffatno1revisited
AT vazquezrubenangel openclusterhavlenmoffatno1revisited
AT baumegustavo openclusterhavlenmoffatno1revisited
bdutipo_str Repositorios
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