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dc.date.accessioned 2019-10-31T16:53:18Z
dc.date.available 2019-10-31T16:53:18Z
dc.date.issued 2012
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/84566
dc.description.abstract Context. The ESO Public Survey "VISTA Variables in the Vía Láctea" (VVV) provides deep multi-epoch infrared observations for unprecedented 562 sq. degrees of the Galactic bulge, and adjacent regions of the disk. Aims. The VVV observations will foster the construction of a sample of Galactic star clusters with reliable and homogeneously derived physical parameters (e.g., age, distance, and mass, etc.). In this first paper in a series, the methodology employed to establish cluster parameters for the envisioned database are elaborated upon by analysing four known young open clusters: Danks 1, Danks 2, RCW 79, and DBS 132. The analysis offers a first glimpse of the information that can be gleaned from the VVV observations for clusters in the final database. Methods. Wide-field, deep JHKs VVV observations, combined with new infrared spectroscopy, are employed to constrain fundamental parameters for a subset of clusters. Results. Results are inferred from VVV near-infrared photometry and numerous low resolution spectra (typically more than 10 per cluster). The high quality of the spectra and the deep wide-field VVV photometry enables us to precisely and independently determine the characteristics of the clusters studied, which we compare to previous determinations. An anomalous reddening law in the direction of the Danks clusters is found, specifically E(J - H)/E(H - Ks) = 2.20 ± 0.06, which exceeds published values for the inner Galaxy. The G305 star forming complex, which includes the Danks clusters, lies beyond the Sagittarius-Carina spiral arm and occupies the Centaurus arm. Finally, the first deep infrared colour-magnitude diagram of RCW 79 is presented, which reveals a sizeable pre-main sequence population. A list of candidate variable stars in G305 region is reported. Conclusions. This study demonstrates the strength of the dataset and methodology employed, and constitutes the first step of a broader study which shall include reliable parameters for a sizeable number of poorly characterised and/or newly discovered clusters. en
dc.language en es
dc.subject Infrared: stars es
dc.subject Open clusters and associations: general es
dc.subject Surveys es
dc.title Massive open star clusters using the VVV survey en
dc.type Articulo es
sedici.identifier.other doi:10.1051/0004-6361/201219064 es
sedici.identifier.other eid:2-s2.0-84866107206 es
sedici.identifier.issn 0004-6361 es
sedici.title.subtitle I. Presentation of the data and description of the approach es
sedici.creator.person Chené, A. N. es
sedici.creator.person Borissova, J. es
sedici.creator.person Clarke, J. R.A. es
sedici.creator.person Bonatto, C. es
sedici.creator.person Majaess, D. J. es
sedici.creator.person Moni Bidin, C. es
sedici.creator.person Sale, S. E. es
sedici.creator.person Mauro, F. es
sedici.creator.person Kurtev, R. es
sedici.creator.person Baume, Gustavo Luis es
sedici.creator.person Feinstein Baigorri, Carlos es
sedici.creator.person Ivanov, V. D. es
sedici.creator.person Geisler, D. es
sedici.creator.person Catelan, M. es
sedici.creator.person Minniti, D. es
sedici.creator.person Lucas, P. es
sedici.creator.person De Grijs, R. es
sedici.creator.person Kumar, M. S. N. es
sedici.subject.materias Ciencias Astronómicas es
sedici.description.fulltext true es
mods.originInfo.place Instituto de Astrofísica de La Plata es
sedici.subtype Revision es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Astronomy & Astrophysics es
sedici.relation.journalVolumeAndIssue vol. 545 es
sedici.rights.sherpa * Color: verde* Pre-print del autor: si* Post-print del autor: si* Versión de editor/PDF:si* Condiciones:>>En el sitio web del autor o institucional o sitios que cumplan las directrices OAI>>Algunas revistas requieren un periodo de embargo para su depósito en repositorios recomendados por los organismos financiadores (ver revista)>>La versión de editor/PDF puede utilizarse (ver revista)>>Debe ir enlazado a la versión de editor>>Deben reconocerse el copyright y la fuente editorial>>No comercial* Link a Sherpa: http://sherpa.ac.uk/romeo/issn/0004-6361/es/


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)