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dc.contributor.author
Corti, Mariela Alejandra
dc.contributor.author
Orellana, Rosa Beatriz
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Bosch, Guillermo Luis
dc.date.available
2019-08-28T18:33:51Z
dc.date.issued
2018-08
dc.identifier.citation
Corti, Mariela Alejandra; Orellana, Rosa Beatriz; Bosch, Guillermo Luis; A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry; EDP Sciences; Astronomy and Astrophysics; 616; A40; 8-2018; 1-10
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/82403
dc.description.abstract
Aims. We plan to identify the members of the Bochum 7 association by performing simultaneous astrometric and spectrophotometric analyses, and estimate its distance and evolutionary stage. Methods. We used our own visual spectroscopic and UBV photometric data of a 300 × 300 region centered at a = 8h44m47:2s, δ =-45°58055.500. This information enabled us to estimate the spectral classification and distance of all stars present in the region. The proper motion was analyzed with data of the UCAC 5 catalog and was used to identify the members of this association. We added JHK data from 2MASS and IRAS catalogs to check for the presence of infrared (IR) excess stars. Results. We found that Bochum 7 is an OB association with at least 27 identified stellar members (l = 265.12, b =-2) at a distance of '5640 pc. Its proper motion is μacosd =-4:92 ± 0:08 mas yr-1, μd = 3:26 ± 0:08 mas yr-1. We derived an average heliocentric radial velocity of ∼35 km s-1 and were able to confirm the binary nature of the (ALS 1135) system and detect four new binary star candidates. Analysis of data for massive Bo 7 star candidates points towards a young age (=3 × 106 years old) for the association, although the presence of a previous episode of star formation remains to be analyzed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Catalogs
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Open Clusters And Associations: Individual: Bochum 7
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Proper Motions
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Stars: Early-Type
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-08-16T16:48:38Z
dc.journal.volume
616
dc.journal.number
A40
dc.journal.pagination
1-10
dc.journal.pais
Francia
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París
dc.description.fil
Fil: Corti, Mariela Alejandra. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
dc.description.fil
Fil: Orellana, Rosa Beatriz. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
dc.description.fil
Fil: Bosch, Guillermo Luis. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
dc.journal.title
Astronomy and Astrophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1051/0004-6361/201731661
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info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2018/08/aa31661-17/aa31661-17.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1804.10672
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