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dc.contributor.author
Saffe, Carlos
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dc.contributor.author
Gómez, M.
dc.date.available
2024-08-05T15:39:42Z
dc.date.issued
2004-07
dc.identifier.citation
Saffe, Carlos; Gómez, M.; A search for disks around exoplanet host stars; EDP Sciences; Astronomy and Astrophysics; 423; 1; 7-2004; 221-233
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/241758
dc.description.abstract
We have assembled a database which comprises optical and infrared (IR) photometry of Exoplanet Host stars (EHs), and constructed the spectral energy distributions (SEDs) of these stars. We use several quantities to explore the existence of excess IR emission with respect to the photospheric level. In particular, the criteria proposed by Manning & Barlow (1998) identify IR excess in 19-23% of the class V EH sources (i.e., in 6-7 out of 31). Several searches for Vega-like systems have yielded a similar fraction of objects with IR excess emission among main sequence stars. This excess emission is likely due to the presence of dust in circumstellar disks. We compare the optical polarization properties of the EHs, Vega-like candidate objects and pre-main sequence stars. While the median polarizations of the EHs and Vega-like candidate objects are very similar, both groups have significant lower median optical polarization values than T Tauri and Herbig AeBe stars.
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
STARS: CIRCUMSTELLA MATTER
dc.subject
STARS: PLANETARY SYSTEMS
dc.subject
TECHNIQUE: PHOTOMETRY
dc.subject
TECHNIQUE: POLARIMETRY
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
A search for disks around exoplanet host stars
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-05T13:56:14Z
dc.journal.volume
423
dc.journal.number
1
dc.journal.pagination
221-233
dc.journal.pais
Francia
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dc.journal.ciudad
Paris
dc.description.fil
Fil: Saffe, Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
dc.description.fil
Fil: Gómez, M.. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
dc.journal.title
Astronomy and Astrophysics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2004/31/aa0241-04/aa0241-04.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361:20040241
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