About
Contact
Help
Sending publications
How to publish
Advanced Search
View Item 
  •   Home
  • Facultad de Ciencias Físicas y Matemáticas
  • Artículos de revistas
  • View Item
  •   Home
  • Facultad de Ciencias Físicas y Matemáticas
  • Artículos de revistas
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse byCommunities and CollectionsDateAuthorsTitlesSubjectsThis CollectionDateAuthorsTitlesSubjects
Biblioteca Digital - Universidad de Chile
Revistas Chilenas
Repositorios Latinoamericanos
Tesis LatinoAmericanas
Tesis chilenas
Related linksRegistry of Open Access RepositoriesOpenDOARGoogle scholarCOREBASE
My Account
Login to my accountRegister

Breaking the curtain: the old open cluster VdB-Hagen 67 in the background of the Vela Molecular Ridge

Artículo
Thumbnail
Open/Download
IconCarraro_Giovanni.pdf (2.271Mb)
Publication date
2010
Metadata
Show full item record
Cómo citar
Carraro, Giovanni
Cómo citar
Breaking the curtain: the old open cluster VdB-Hagen 67 in the background of the Vela Molecular Ridge
.
Copiar
Cerrar
Author
  • Carraro, Giovanni;
  • Costa Hechenleitner, Edgardo;
Abstract
We present optical and infrared photometry for VdB-Hagen 67, an overlooked old open cluster located at l = 273.◦76, b = −0.◦375 (RA 09h26m45s, Dec.−51◦16 00 , J2000.0) in the fourth Galactic quadrant, in the direction of theVela Molecular Ridge. VdB-Hagen 67 is immersed in a dense stellar field which is characterized by highly patchy extinction, andAV in the line of sight to the cluster is larger than 3mag. The cluster looks symmetric and it clearly stands out from the general Galactic field. By means of a star count analysis, both in the optical and IR, we have estimated that its radius is of about 2 arcmin. Before this study, only very general information was available for this cluster, but here we have determined its fundamental parameters. The age of VdB-Hagen 67 has been estimated, both empirically and with theoretical isochrones, and turns out to be about 1.3 Gyr. The difficulty to separate cluster members from interlopers prevented us from estimating its metallicity. No traces of subgiant or red-giant branch stars are visible in its field-star-decontaminated colour–magnitude diagrams; VdB-Hagen 67 is an old, poorly populated, star cluster on the verge of dissolving into the general Galactic field. We derive a heliocentric distance of ∼7.5 kpc and a galactocentric distance of ∼11.5 kpc. With the exception of FSR 1415 at 8.6 kpc, and with an age of ∼2.5Gyr , no other old clusters are known so far from the Sun in this Galactic sector. We argue that in this region of the Galactic plane several other distant clusters of this age have to exist, but have not been unravelled mainly because of the significant extinction produced by the dense Vela Molecular Ridge.
Patrocinador
EC acknowledges support from the Chilean Centro de Astrof´ısica (FONDAP No. 15010003) and the Chilean Centro de Excelencia en Astrofísica y Tecnologías Afines (PFB 06).
Identifier
URI: https://repositorio.uchile.cl/handle/2250/125400
DOI: doi:10.1111/j.1365-2966.2009.16011.x
Quote Item
Mon. Not. R. Astron. Soc. 402, 1863–1869 (2010)
Collections
  • Artículos de revistas
xmlui.footer.title
31 participating institutions
More than 73,000 publications
More than 110,000 topics
More than 75,000 authors
Published in the repository
  • How to publish
  • Definitions
  • Copyright
  • Frequent questions
Documents
  • Dating Guide
  • Thesis authorization
  • Document authorization
  • How to prepare a thesis (PDF)
Services
  • Digital library
  • Chilean academic journals portal
  • Latin American Repository Network
  • Latin American theses
  • Chilean theses
Dirección de Servicios de Información y Bibliotecas (SISIB)
Universidad de Chile

© 2020 DSpace
  • Access my account