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dc.contributor.author
Perren, Gabriel Ignacio
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dc.contributor.author
Giorgi, E. E.
dc.contributor.author
Moitinho, A.
dc.contributor.author
Carraro, Giovanni
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dc.contributor.author
Pera, María Sol
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dc.contributor.author
Vazquez, Ruben Angel
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dc.date.available
2021-11-02T14:43:22Z
dc.date.issued
2020-05
dc.identifier.citation
Perren, Gabriel Ignacio; Giorgi, E. E.; Moitinho, A.; Carraro, Giovanni; Pera, María Sol; et al.; Sixteen overlooked open clusters in the four th Galactic quadrant A combined analysis of UBVI photometry and Gaia DR2 with ASteCA; EDP Sciences; Astronomy and Astrophysics; 637; A95; 5-2020; 1-39
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/145734
dc.description.abstract
Aims. This paper has two main objectives: (1) To determine the intrinsic properties of 16 faint and mostly unstudied open clustersin the poorly known sector of the Galaxy at 270◦−300◦ to probe the Milky Way structure in future investigations. (2) To addresspreviously reported systematics in Gaia DR2 parallaxes by comparing the cluster distances derived from photometry with thosederived from parallaxes.Methods. Deep UBVI photometry of 16 open clusters was carried out. Observations were reduced and analyzed in an automaticway using the ASteCA package to obtain individual distances, reddening, masses, ages, and metallicities. Photometric distances werecompared to those obtained from a Bayesian analysis of Gaia DR2 parallaxes.Results. Ten out of the sixteen clusters are true or highly probable open clusters. Two of them are quite young and follow the traceof the Carina Arm and the already detected warp. The remaining clusters are placed in the interarm zone between the Perseus andCarina Arms, as expected for older objects. We found that the cluster van den Berg-Hagen 85 is 7.5 × 109 yr old, which means that itis one of the oldest open clusters detected in our Galaxy so far. The relationship of these ten clusters with the Galaxy structure in thesolar neighborhood is discussed. The comparison of distances from photometry and parallaxes data in turn reveals a variable level ofdisagreement.Conclusions. Various zero-point corrections for Gaia DR2 parallax data recently reported were considered for a comparison betweenphotometry- and parallax-based distances. The results tend to improve with some of these corrections. Photometric distance analysissuggests an average correction of ∼+0.026 mas (to be added to the parallaxes). The correction may have a more intricate dependenceon distance, but addressing this level of detail will require a larger cluster sample.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
methods: statistical
dc.subject
open clusters and associations: general
dc.subject
galaxies: star clusters: general
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techniques: photometric
dc.subject
parallaxes ? proper motions
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Sixteen overlooked open clusters in the four th Galactic quadrant A combined analysis of UBVI photometry and Gaia DR2 with ASteCA
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-08T18:58:07Z
dc.journal.volume
637
dc.journal.number
A95
dc.journal.pagination
1-39
dc.journal.pais
Francia
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dc.journal.ciudad
Paris
dc.description.fil
Fil: Perren, Gabriel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
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Fil: Giorgi, E. E.. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
dc.description.fil
Fil: Moitinho, A.. Universidade de Lisboa; Portugal
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Fil: Carraro, Giovanni. Universita Di Padova; Italia
dc.description.fil
Fil: Pera, María Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
dc.description.fil
Fil: Vazquez, Ruben Angel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
dc.journal.title
Astronomy and Astrophysics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1051/0004-6361/201937141
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2020/05/aa37141-19/aa37141-19.html
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