CORE
🇺🇦
make metadata, not war
Services
Services overview
Explore all CORE services
Access to raw data
API
Dataset
FastSync
Content discovery
Recommender
Discovery
OAI identifiers
OAI Resolver
Managing content
Dashboard
Bespoke contracts
Consultancy services
Support us
Support us
Membership
Sponsorship
Community governance
Advisory Board
Board of supporters
Research network
About
About us
Our mission
Team
Blog
FAQs
Contact us
NGC 6067: A young and massive open cluster with high metallicity
Authors
J Alonso-Santiago
N Castro
+4 more
C González-Fernández
A Marco
I Negueruela
HM Tabernero
Publication date
1 January 2017
Publisher
Monthly Notices of the Royal Astronomical Society
Doi
Cite
View
on
arXiv
Abstract
© 2017 The Authors. NGC6067 is a young open cluster hosting the largest population of evolved stars among known Milky Way clusters in the 50-150 Ma age range. It thus represents the best laboratory in our Galaxy to constrain the evolutionary tracks of 5-7M⊙ stars. We have used high-resolution spectra of a large sample of bright cluster members (45), combined with archival photometry, to obtain accurate parameters for the cluster as well as stellar atmospheric parameters.We derive a distance of 1.78 ± 0.12 kpc, an age of 90 ± 20 Ma and a tidal radius of 14.8 -3.2+6.8 arcmin. We estimate an initial mass above 5700M⊙, for a present-day evolved population of two Cepheids, two A supergiants and 12 red giants with masses ≈6M⊙. We also determine chemical abundances of Li, O, Na, Mg, Si, Ca, Ti, Ni, Rb, Y and Ba for the red clump stars. We find a supersolar metallicity, [Fe/H]=+0.19 ± 0.05, and a homogeneous chemical composition, consistent with the Galactic metallicity gradient. The presence of a Li-rich red giant, star 276 with A(Li)=2.41, is also detected. An overabundance of Ba is found, supporting the enhanced s-process. The ratio of yellow to red giants is much smaller than 1, in agreement with models with moderate overshooting, but the properties of the cluster Cepheids do not seem consistent with current Padova models for supersolar metallicity
Similar works
Full text
Open in the Core reader
Download PDF
Available Versions
RUA
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:rua.ua.es:10045/68132
Last time updated on 09/04/2020
Repositorio Institucional de la Universidad de Alicante
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:rua.ua.es:10045/68132
Last time updated on 25/08/2017
Crossref
See this paper in CORE
Go to the repository landing page
Download from data provider
info:doi/10.1093%2Fmnras%2Fstx...
Last time updated on 01/04/2019
Sustaining member
Apollo (Cambridge)
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:www.repository.cam.ac.uk:1...
Last time updated on 12/01/2019