A revisit to the regions of some van den Bergh open clusters using photometric and astrometric parameters

We present results of a study that combines photometry and astrometry for the open clusters vdB80, vdB85 and vdB130. We apply a model which analyses the proper motion distribution and the stellar density to find the kinematic parameters and stellar membership in the region of the mentioned open clus...

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Detalles Bibliográficos
Autores principales: Orellana, Rosa Beatriz, De Biasi, María Silvina, Paíz, Leonardo Gastón, Bustos Fierro, I. H., Calderón, J. H.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Astronomía
(Galaxy:) open clusters and associations: general
(Galaxy:) open clusters and associations: individual (vdB80, vdB85, vdB130)
Astrometry
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/104902
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-104902
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
(Galaxy:) open clusters and associations: general
(Galaxy:) open clusters and associations: individual (vdB80, vdB85, vdB130)
Astrometry
spellingShingle Astronomía
(Galaxy:) open clusters and associations: general
(Galaxy:) open clusters and associations: individual (vdB80, vdB85, vdB130)
Astrometry
Orellana, Rosa Beatriz
De Biasi, María Silvina
Paíz, Leonardo Gastón
Bustos Fierro, I. H.
Calderón, J. H.
A revisit to the regions of some van den Bergh open clusters using photometric and astrometric parameters
topic_facet Astronomía
(Galaxy:) open clusters and associations: general
(Galaxy:) open clusters and associations: individual (vdB80, vdB85, vdB130)
Astrometry
format Articulo
Articulo
author Orellana, Rosa Beatriz
De Biasi, María Silvina
Paíz, Leonardo Gastón
Bustos Fierro, I. H.
Calderón, J. H.
author_facet Orellana, Rosa Beatriz
De Biasi, María Silvina
Paíz, Leonardo Gastón
Bustos Fierro, I. H.
Calderón, J. H.
author_sort Orellana, Rosa Beatriz
title A revisit to the regions of some van den Bergh open clusters using photometric and astrometric parameters
title_short A revisit to the regions of some van den Bergh open clusters using photometric and astrometric parameters
title_full A revisit to the regions of some van den Bergh open clusters using photometric and astrometric parameters
title_fullStr A revisit to the regions of some van den Bergh open clusters using photometric and astrometric parameters
title_full_unstemmed A revisit to the regions of some van den Bergh open clusters using photometric and astrometric parameters
title_sort revisit to the regions of some van den bergh open clusters using photometric and astrometric parameters
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/104902
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AT paizleonardogaston arevisittotheregionsofsomevandenberghopenclustersusingphotometricandastrometricparameters
AT bustosfierroih arevisittotheregionsofsomevandenberghopenclustersusingphotometricandastrometricparameters
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AT debiasimariasilvina revisittotheregionsofsomevandenberghopenclustersusingphotometricandastrometricparameters
AT paizleonardogaston revisittotheregionsofsomevandenberghopenclustersusingphotometricandastrometricparameters
AT bustosfierroih revisittotheregionsofsomevandenberghopenclustersusingphotometricandastrometricparameters
AT calderonjh revisittotheregionsofsomevandenberghopenclustersusingphotometricandastrometricparameters
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description We present results of a study that combines photometry and astrometry for the open clusters vdB80, vdB85 and vdB130. We apply a model which analyses the proper motion distribution and the stellar density to find the kinematic parameters and stellar membership in the region of the mentioned open clusters. The astrometric data are obtained from UCAC4 catalogue. For each cluster, we report the centre coordinates, the components of mean proper motion, the angular diameter and the astrometric members. They are: <math><mrow is="true"><mi is="true">α</mi><mo is="true">=</mo><mn is="true">97</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">73938</mn><mo is="true">±</mo><mn is="true">0</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">00846</mn><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><mi is="true">δ</mi><mo is="true">=</mo><mo is="true">-</mo><mn is="true">9</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">66953</mn><mo is="true">±</mo><mn is="true">0</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">01177</mn><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><msub is="true"><mrow is="true"><mi is="true">μ</mi></mrow><mrow is="true"><mi is="true">α</mi></mrow></msub><mi mathvariant="italic" is="true">cos</mi><mi is="true">δ</mi><mo is="true">=</mo><mo is="true">-</mo><mn is="true">2.13</mn><mo is="true">±</mo><mn is="true">0.47</mn><mspace width="0.25em" is="true"></mspace><mi mathvariant="normal" is="true">mas</mi><mo is="true">/</mo><mi mathvariant="normal" is="true">yr</mi><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><msub is="true"><mrow is="true"><mi is="true">μ</mi></mrow><mrow is="true"><mi is="true">δ</mi></mrow></msub><mo is="true">=</mo><mo is="true">-</mo><mn is="true">0.95</mn><mo is="true">±</mo><mn is="true">0.47</mn><mspace width="0.25em" is="true"></mspace><mi mathvariant="normal" is="true">mas</mi><mo is="true">/</mo><mi mathvariant="normal" is="true">yr</mi><mtext is="true">,</mtext><msup is="true"><mrow is="true"><mn is="true">12</mn></mrow><mrow is="true"><mo is="true">′</mo></mrow></msup></mrow></math> , 15 members; vdB85: <math><mrow is="true"><mi is="true">α</mi><mo is="true">=</mo><mn is="true">101</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">71670</mn><mo is="true">±</mo><mn is="true">0</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">00808</mn><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><mi is="true">δ</mi><mo is="true">=</mo><mn is="true">1</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">34392</mn><mo is="true">±</mo><mn is="true">0</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">01253</mn><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><msub is="true"><mrow is="true"><mi is="true">μ</mi></mrow><mrow is="true"><mi is="true">α</mi></mrow></msub><mi mathvariant="italic" is="true">cos</mi><mi is="true">δ</mi><mo is="true">=</mo><mn is="true">0.89</mn><mo is="true">±</mo><mn is="true">0.43</mn><mspace width="0.25em" is="true"></mspace><mi mathvariant="normal" is="true">mas</mi><mo is="true">/</mo><mi mathvariant="normal" is="true">yr</mi><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><msub is="true"><mrow is="true"><mi is="true">μ</mi></mrow><mrow is="true"><mi is="true">δ</mi></mrow></msub><mo is="true">=</mo><mn is="true">3.24</mn><mo is="true">±</mo><mn is="true">0.43</mn><mspace width="0.25em" is="true"></mspace><mi mathvariant="normal" is="true">mas</mi><mo is="true">/</mo><mi mathvariant="normal" is="true">yr</mi><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><msup is="true"><mrow is="true"><mn is="true">8</mn></mrow><mrow is="true"><mo is="true">′</mo></mrow></msup></mrow></math> members; vdB130: <math><mrow is="true"><mi is="true">α</mi><mo is="true">=</mo><mn is="true">304</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">44001</mn><mo is="true">±</mo><mn is="true">0</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">01407</mn><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><mi is="true">δ</mi><mo is="true">=</mo><mn is="true">39</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">32745</mn><mo is="true">±</mo><mn is="true">0</mn><mi is="true">°</mi><mo is="true">.</mo><mn is="true">00726</mn><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><msub is="true"><mrow is="true"><mi is="true">μ</mi></mrow><mrow is="true"><mi is="true">α</mi></mrow></msub><mi mathvariant="italic" is="true">cos</mi><mi is="true">δ</mi><mo is="true">=</mo><mo is="true">-</mo><mn is="true">4.14</mn><mo is="true">±</mo><mn is="true">0.25</mn><mspace width="0.25em" is="true"></mspace><mi mathvariant="normal" is="true">mas</mi><mo is="true">/</mo><mi mathvariant="normal" is="true">yr</mi><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><msub is="true"><mrow is="true"><mi is="true">μ</mi></mrow><mrow is="true"><mi is="true">δ</mi></mrow></msub><mo is="true">=</mo><mo is="true">-</mo><mn is="true">5.15</mn><mo is="true">±</mo><mn is="true">0.25</mn><mspace width="0.25em" is="true"></mspace><mi mathvariant="normal" is="true">mas</mi><mo is="true">/</mo><mi mathvariant="normal" is="true">yr</mi><mtext is="true">,</mtext><mspace width="0.35em" is="true"></mspace><msup is="true"><mrow is="true"><mn is="true">9</mn></mrow><mrow is="true"><mo is="true">′</mo></mrow></msup></mrow></math> 9 members. We analyse the incidence of the proper motion errors in the determination of the cluster parameters and of the stellar membership and find that they are not significantly changed. We finally compare the astrometric members with the photometric ones given in the literature.

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