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dc.contributor.author
Rebassa Mansergas, A  
dc.contributor.author
Solano, E.  
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Jiménez Esteban, F. M.  
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Torres, S.  
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Rodrigo, C.  
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Ferrer Burjachs, A  
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Calcaferro, Leila Magdalena  
dc.contributor.author
Althaus, Leandro Gabriel  
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Córsico, Francisco Armando  
dc.date.available
2022-02-24T14:54:55Z  
dc.date.issued
2021-07  
dc.identifier.citation
Rebassa Mansergas, A; Solano, E.; Jiménez Esteban, F. M.; Torres, S.; Rodrigo, C.; et al.; White dwarf-main sequence binaries from Gaia EDR3 : the unresolved 100 pc volume-limited sample; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 506; 4; 7-2021; 5201–5211  
dc.identifier.issn
0035-8711  
dc.identifier.uri
http://hdl.handle.net/11336/152664  
dc.description.abstract
We use the data provided by the Gaia Early Data Release 3 to search for a highly-complete volume-limited sample of unresolved binaries consisting of a white dwarf and a main sequence companion (i.e. WDMS binaries) within 100 pc. We select 112 objects based on their location within the Hertzsprung-Russell diagram, of which 97 are new identifications. We fit their spectral energy distributions (SED) with a two-body fitting algorithm implemented in VOSA (Virtual Observatory SED Analyser) to derive the effective temperatures, luminosities and radii (hence surface gravities and masses) of both components. The stellar parameters are compared to those from the currently largest catalogue of close WDMS binaries, from the Sloan Digital Sky Survey (SDSS). We find important differences between the properties of the Gaia and SDSS samples. In particular, the Gaia sample contains WDMS binaries with considerably cooler white dwarfs and main sequence companions (some expected to be brown dwarfs). The Gaia sample also shows an important population of systems consisting of cool and extremely low-mass white dwarfs, not present in the SDSS sample. Finally, using a Monte Carlo population synthesis code, we find that the volume-limited sample of systems identified here seems to be highly complete (≃ 80 ± 9 per cent), however it only represents ≃9 per cent of the total underlying population. The missing ≃91 per cent includes systems in which the main sequence companions entirely dominate the SEDs. We also estimate an upper limit to the total space density of close WDMS binaries of ≃ (3.7 ± 1.9) × 10-4 pc-3.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley Blackwell Publishing, Inc  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
STARS: WHITE DWARFS  
dc.subject
STARS: BINARIES (INCLUDING MULTIPLE): CLOSE  
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VIRTUAL OBSERVATORY TOOLS  
dc.subject.classification
Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
White dwarf-main sequence binaries from Gaia EDR3 : the unresolved 100 pc volume-limited sample  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-02-04T13:31:02Z  
dc.journal.volume
506  
dc.journal.number
4  
dc.journal.pagination
5201–5211  
dc.journal.pais
Reino Unido  
dc.description.fil
Fil: Rebassa Mansergas, A. Universidad Politécnica de Catalunya. Departament de Física Enginyeria; España  
dc.description.fil
Fil: Solano, E.. CSIC-INTA. Centro de Astrobiologí­a; España  
dc.description.fil
Fil: Jiménez Esteban, F. M.. CSIC-INTA. Centro de Astrobiologí­a; España  
dc.description.fil
Fil: Torres, S.. Universidad Politécnica de Catalunya. Departament de Física Enginyeria; España  
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Fil: Rodrigo, C.. CSIC-INTA. Centro de Astrobiologí­a; España  
dc.description.fil
Fil: Ferrer Burjachs, A. Universidad Politécnica de Catalunya. Departament de Física Enginyeria; España  
dc.description.fil
Fil: Calcaferro, Leila Magdalena. 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: Althaus, Leandro Gabriel. 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: Córsico, Francisco Armando. 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
Monthly Notices of the Royal Astronomical Society  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stab2039/6322850  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stab2039