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dc.contributor.author
Sosa, Marina S.
dc.contributor.author
von Essen, Carolina
dc.contributor.author
Andruchow, Ileana
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dc.contributor.author
Cellone, Sergio Aldo
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dc.contributor.author
Mammana, Luis Antonio
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dc.date.available
2022-10-13T14:11:47Z
dc.date.issued
2019-04
dc.identifier.citation
Sosa, Marina S.; von Essen, Carolina; Andruchow, Ileana; Cellone, Sergio Aldo; Mammana, Luis Antonio; Dual-Beam Optical Linear Polarimetry from the Southern Skies : characterisation of CASPOL for high precision polarimetry; SPIE; Journal of Astronomical Telescopes, Instruments, and Systems; 5; 0280; 4-2019; 1-112
dc.identifier.issn
2329-4124
dc.identifier.uri
http://hdl.handle.net/11336/172977
dc.description.abstract
We present a characterization of CasPol, a dual-beam polarimeter mounted at the 2.15-m Jorge Sahade Telescope, located at the Complejo Astronómico El Leoncito, Argentina. The telescope is one of the few available meter-sized optical telescopes located in the southern hemisphere hosting a polarimeter. To carry out this work, we collected photopolarimetric data along five observing campaigns, the first one during January 2014, and the remaining ones spread between August 2017 and March 2018. The data were taken through the Johnson?Cousins V, R, and I filters. Along the campaigns, we observed eight unpolarized and four polarized standard stars. Our analysis began characterizing the impact of seeing and aperture into the polarimetric measurements, defining an optimum aperture extraction and setting a clear limit for seeing conditions. Then, we used the unpolarized standard stars to characterize the level of instrumental polarization and to assess the presence of polarization dependent on the position across the charge-coupled device. Polarized standard stars were investigated to quantify the stability of the instrument with wavelength. Specifically, we find that the overall instrumental polarization of CasPol is ∼0.2 % in the V, R, and I bands, with a negligible polarization dependence on the position of the stars on the detector. The stability of the half-wave plate retarder is about 0.35 deg, making CasPol comparable to already existing instruments. We also provide measurements in the three photometric bands for both the unpolarized and polarized standard stars. Finally, we show scientific results, illustrating the capabilities of CasPol for precision polarimetry of relatively faint objects.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
SPIE
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
polarization; instrumentation: polarimeters
dc.subject
methods: data analysis
dc.subject
techniques: polarimetric
dc.subject
(galaxies:) BL Lacertae objects: individual: 1ES 1101-232
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
Dual-Beam Optical Linear Polarimetry from the Southern Skies : characterisation of CASPOL for high precision polarimetry
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-16T20:10:02Z
dc.journal.volume
5
dc.journal.number
0280
dc.journal.pagination
1-112
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Bellingham
dc.description.fil
Fil: Sosa, Marina S.. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
dc.description.fil
Fil: von Essen, Carolina. Stellar Astrophysics Centre, Aarhus University; Dinamarca
dc.description.fil
Fil: Andruchow, Ileana. 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: Cellone, Sergio Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; Argentina
dc.description.fil
Fil: Mammana, Luis Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; Argentina
dc.journal.title
Journal of Astronomical Telescopes, Instruments, and Systems
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://doi.org/10.1117/1.JATIS.5.2.028002
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.spiedigitallibrary.org/journals/Journal-of-Astronomical-Telescopes-Instruments-and-Systems/volume-5/issue-2/028002/Dual-beam-optical-linear-polarimetry-from-Southern-skies--characterization/10.1117/1.JATIS.5.2.028002.short?SSO=1
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