dc.creator | Piatti, Andres Eduardo | |
dc.creator | Claria Olmedo, Juan Jose | |
dc.creator | Ahumada, Andrea Veronica | |
dc.date.accessioned | 2017-09-20T19:33:42Z | |
dc.date.accessioned | 2018-11-06T13:35:46Z | |
dc.date.available | 2017-09-20T19:33:42Z | |
dc.date.available | 2018-11-06T13:35:46Z | |
dc.date.created | 2017-09-20T19:33:42Z | |
dc.date.issued | 2009-07 | |
dc.identifier | Piatti, Andres Eduardo; Claria Olmedo, Juan Jose; Ahumada, Andrea Veronica; NGC2587: a sparse open cluster projected on to a populous star field; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 397; 2; 7-2009; 1073-1083 | |
dc.identifier | 0035-8711 | |
dc.identifier | http://hdl.handle.net/11336/24733 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1877237 | |
dc.description.abstract | We present CCD photometry in the Johnson U, B and V and Kron–Cousins I passbands for the open cluster NGC 2587. The sample consists of 4406 stars reaching down to V∼ 21.0. We developed a new method to clean statistically the colour–magnitude diagrams. NGC 2587 appears to be a sparse, relatively bright open cluster, with a few tens of members projected on to a populous star field. The comparatively bright F7/8 II type star HD 70927, located close to the cluster centre, seems not to be a member. Our analysis suggests that NGC 2587 is slightly younger than the Hyades and probably of solar metallicity. A cluster radius of roughly 8 arcmin was estimated from the radial stellar density profile. From 18 probable cluster members with measured proper motions, we derive the following mean values for NGC 2587: μα=−4.3 ± 3.6 mas yr−1 and μδ=−2.5 ± 3.4 mas yr−1. Adopting the theoretical metal content Z= 0.02, which provides the best global fit, we derive a cluster age of 500+60−50. Simultaneously, colour excesses E(B−V) = 0.10 and E(V−I) = 0.15 and an apparent distance modulus of V−MV= 12.50 are obtained. The interstellar extinction in the cluster direction is found to follow the normal law. NGC 2587 is located at a distance of (2.70 ± 0.70) kpc from the Sun and ∼9.8 kpc from the Galactic centre. | |
dc.language | eng | |
dc.publisher | Oxford University Press | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/j.1365-2966.2009.15069.x | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1111/j.1365-2966.2009.15069.x | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject | Techniques: photometric | |
dc.subject | Galaxy: open clusters and associations: general | |
dc.subject | Galaxy: open clusters and associations: individual (NGC 2587) | |
dc.title | NGC2587: a sparse open cluster projected on to a populous star field | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |