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dc.contributor.author Pereyra, Antonio
dc.contributor.author Rodrigues, C. V.
dc.contributor.author Martioli, E.
dc.date.accessioned 2018-08-02T17:00:12Z
dc.date.available 2018-08-02T17:00:12Z
dc.date.issued 2015
dc.identifier.govdoc index-oti2018 (NB)
dc.identifier.issn 14320746
dc.identifier.uri http://repositorio.igp.gob.pe/handle/IGP/2193
dc.description En: Astronomy & Astrophysics, v. 573, (2015), p. A133, 1-13. es_ES
dc.description.abstract "Aims. Our goal is to test the feasibility of obtaining accurate measurements of the continuum polarization from high-resolution spectra using the spectropolarimetric mode of ESPaDOnS. Methods. We used the new pipeline OPERA to reduce recent and archived ESPaDOnS data. Several polarization standard stars and science objects were tested for the linear mode. In addition, the circular mode was tested using several objects from the archive with expected null polarization. Synthetic broad-band polarization was computed from the ESPaDOnS continuum polarization spectra and compared with published values (when available) to quantify the accuracy of the instrument. Results. The continuum linear polarization measured by ESPaDOnS is consistent with broad-band polarimetry measurements available in the literature. The accuracy in the degree of linear polarization is around 0.2−0.3% considering the full sample. The accuracy in polarization position angle using the most polarized objects is better than 5◦. Consistent with this, the instrumental polarization computed for the circular continuum polarization is also between 0.2−0.3%. Our results suggest that measurements of the continuum polarization using ESPaDOnS are viable and can be used to study many astrophysical objects." es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Instituto Geofísico del Perú es_ES
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.rights.uri info:eu-repo/semantics/restrictedAccess es_ES
dc.source Repositorio institucional - IGP es_ES
dc.subject Astrofísica es_ES
dc.subject Polarización (Física nuclear) es_ES
dc.subject Estrellas es_ES
dc.subject Espectropolarimetría astrofísica es_ES
dc.subject Polarimetría--Técnicas es_ES
dc.subject Polarimetría--Instrumentación es_ES
dc.title Measuring the continuum polarization with ESPaDOnS es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde Astronomía es_ES
dc.subject.ocde Ciencias espaciales es_ES
dc.subject.ocde Ciencias del espacio es_ES
dc.identifier.journal Astronomy & Astrophysics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi 10.1051/0004-6361/201423492 es_ES

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