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A Catalog of Wide Binary and Multiple Systems of Bright Stars from Gaia-DR2 and the Virtual Observatory
Identificadores del recurso
The Astronomical Journal 157(2): 78(2019)
0004-6256
https://iopscience.iop.org/article/10.3847/1538-3881/aafacc
http://hdl.handle.net/20.500.12666/368
10.3847/1538-3881/aafacc
1538-3881
http://dx.doi.org/10.13039/501100011033
http://dx.doi.org/10.13039/501100000781
Procedencia
(DIGITAL.INTA)

Ficha

Título:
A Catalog of Wide Binary and Multiple Systems of Bright Stars from Gaia-DR2 and the Virtual Observatory
Tema:
Astronomical databases: miscellaneous
Binaries: visual
Catalogs
Parallaxes
Proper motions
Virtual observatory tools
Descripción:
Binary and multiple stars have long provided an effective empirical method of testing stellar formation and evolution theories. In particular, the existence of wide binary systems (separations >20,000 au) is particularly challenging to binary formation models as their physical separations are beyond the typical size of a collapsing cloud core (~5000–10,000 au). We mined the recently published Gaia-DR2 catalog to identify bright comoving systems in the five-dimensional space (sky position, parallax, and proper motion). We identified 3741 comoving binary and multiple stellar candidate systems, out of which 575 have compatible radial velocities for all the members of the system. The candidate systems have separations between ~400 and 500,000 au. We used the analysis tools of the Virtual Observatory to characterize the comoving system members and to assess their reliability. The comparison with previous comoving systems catalogs obtained from TGAS showed that these catalogs contain a large number of false systems. In addition, we were not able to confirm the ultra-wide binary population presented in these catalogs. The robustness of our methodology is demonstrated by the identification of well known comoving star clusters and by the low contamination rate for comoving binary systems with projected physical separations <50,000 au. These last constitute a reliable sample for further studies. The catalog is available online at the Spanish Virtual Observatory portal (http://svo2.cab.inta-csic.es/vocats/v2/comovingGaiaDR2/).
We thank J. A. Caballero and M. Cortés-Contreras for their comments and useful discussions on an early draft of this paper. This work has made use of data from the European Space Agency (ESA) Gaia mission (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This publication makes use of VOSA, developed under the Spanish Virtual Observatory project supported by the Spanish MINECO through grant AyA2017-84089. This research has made use of the VizieR catalog access tool, CDS, Strasbourg, France. We acknowledge use of the ADS bibliographic services. This research has made use of "Aladin sky atlas" developed at CDS, Strasbourg Observatory, France. This research has made use of Topcat (Taylor 2005). F.J.E. acknowledges financial support from the Spacetec-CM project (S2013/ICE-2822), and from ASTERICS project (ID:653477, H2020-EU.1.4.1.1.—Developing new world-class research infrastructures) ; With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (MDM-2017-0737).
Peer review
Idioma:
English
Relación:
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2017-84089-P/ES/EL OBSERVATORIO VIRTUAL ESPAÑOL. EXPLOTACION CIENTIFICO-TECNICA DE ARCHIVOS ASTRONOMICOS/
https://iopscience.iop.org/article/10.3847/1538-3881/aafacc
info:eu-repo/grantAgreement/EC/H2020/653477
Autor/Productor:
Jiménez Esteban, F. M.
Solano, E.
Rodrigo, C.
Editor:
The Institute of Physics (IOP)
Otros colaboradores/productores:
Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737
Ministerio de Economía y Competitividad (MINECO)
Agencia Estatal de Investigación (AEI)
European Research Council (ERC)
Derechos:
Attribution-NonCommercial-NoDerivatives 4.0 International
Published 2019 January 28 • © 2019. The American Astronomical Society. All rights reserved.
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/restrictedAccess
Fecha:
2021-04-14T12:28:22Z
2019-01-28
Tipo de recurso:
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
Formato:
application/pdf

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    1. <mods:name>

      1. <mods:namePart>Jiménez Esteban, F. M.</mods:namePart>

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    2. <mods:name>

      1. <mods:namePart>Solano, E.</mods:namePart>

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    3. <mods:name>

      1. <mods:namePart>Rodrigo, C.</mods:namePart>

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      1. <mods:dateAvailable encoding="iso8601">2021-04-14T12:28:22Z</mods:dateAvailable>

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      1. <mods:dateIssued encoding="iso8601">2019-01-28</mods:dateIssued>

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    7. <mods:identifier type="citation">The Astronomical Journal 157(2): 78(2019)</mods:identifier>

    8. <mods:identifier type="issn">0004-6256</mods:identifier>

    9. <mods:identifier type="other">https://iopscience.iop.org/article/10.3847/1538-3881/aafacc</mods:identifier>

    10. <mods:identifier type="uri">http://hdl.handle.net/20.500.12666/368</mods:identifier>

    11. <mods:identifier type="doi">10.3847/1538-3881/aafacc</mods:identifier>

    12. <mods:identifier type="e-issn">1538-3881</mods:identifier>

    13. <mods:identifier type="funder">http://dx.doi.org/10.13039/501100011033</mods:identifier>

    14. <mods:identifier type="funder">http://dx.doi.org/10.13039/501100000781</mods:identifier>

    15. <mods:abstract>Binary and multiple stars have long provided an effective empirical method of testing stellar formation and evolution theories. In particular, the existence of wide binary systems (separations >20,000 au) is particularly challenging to binary formation models as their physical separations are beyond the typical size of a collapsing cloud core (~5000–10,000 au). We mined the recently published Gaia-DR2 catalog to identify bright comoving systems in the five-dimensional space (sky position, parallax, and proper motion). We identified 3741 comoving binary and multiple stellar candidate systems, out of which 575 have compatible radial velocities for all the members of the system. The candidate systems have separations between ~400 and 500,000 au. We used the analysis tools of the Virtual Observatory to characterize the comoving system members and to assess their reliability. The comparison with previous comoving systems catalogs obtained from TGAS showed that these catalogs contain a large number of false systems. In addition, we were not able to confirm the ultra-wide binary population presented in these catalogs. The robustness of our methodology is demonstrated by the identification of well known comoving star clusters and by the low contamination rate for comoving binary systems with projected physical separations <50,000 au. These last constitute a reliable sample for further studies. The catalog is available online at the Spanish Virtual Observatory portal (http://svo2.cab.inta-csic.es/vocats/v2/comovingGaiaDR2/).</mods:abstract>

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      1. <mods:languageTerm>eng</mods:languageTerm>

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    17. <mods:accessCondition type="useAndReproduction">Published 2019 January 28 • © 2019. The American Astronomical Society. All rights reserved.</mods:accessCondition>

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    20. <mods:accessCondition type="useAndReproduction">Attribution-NonCommercial-NoDerivatives 4.0 International</mods:accessCondition>

    21. <mods:subject>

      1. <mods:topic>Astronomical databases: miscellaneous</mods:topic>

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    22. <mods:subject>

      1. <mods:topic>Binaries: visual</mods:topic>

      </mods:subject>

    23. <mods:subject>

      1. <mods:topic>Catalogs</mods:topic>

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    24. <mods:subject>

      1. <mods:topic>Parallaxes</mods:topic>

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    25. <mods:subject>

      1. <mods:topic>Proper motions</mods:topic>

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    26. <mods:subject>

      1. <mods:topic>Virtual observatory tools</mods:topic>

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    27. <mods:titleInfo>

      1. <mods:title>A Catalog of Wide Binary and Multiple Systems of Bright Stars from Gaia-DR2 and the Virtual Observatory</mods:title>

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