The polarization of HD 189733

K. Bott; J. Bailey; L. Kedziora-Chudczer; D. V. Cotton; P. W. Lucas; J. P. Marshall; J. H. Hough

doi:10.1093/mnrasl/slw046

The polarization of HD 189733

K. Bott, J. Bailey, L. Kedziora-Chudczer, D. V. Cotton, P. W. Lucas, J. P. Marshall, J. H. Hough

Western Sydney University

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

We present linear polarization observations of the exoplanet system HD 189733 made with the HIgh Precision Polarimetric Instrument (HIPPI) on the Anglo-Australian Telescope (AAT). The observations have higher precision than any previously reported for this object. They do not show the large amplitude polarization variations reported by Berdyugina et al. Our results are consistent with polarization data presented by Wiktorowicz et al. A formal least squares fit of a Rayleigh-Lambert model yields a polarization amplitude of 29.4 Â± 15.6 parts per million. We observe a background constant level of polarization of ~55-70 ppm, which is a little higher than expected for interstellar polarization at the distance of HD 189733.

Original language	English
Pages (from-to)	L109-L113
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	459
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slw046
Publication status	Published - 2016

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10.1093/mnrasl/slw046

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title = "The polarization of HD 189733",

abstract = "We present linear polarization observations of the exoplanet system HD 189733 made with the HIgh Precision Polarimetric Instrument (HIPPI) on the Anglo-Australian Telescope (AAT). The observations have higher precision than any previously reported for this object. They do not show the large amplitude polarization variations reported by Berdyugina et al. Our results are consistent with polarization data presented by Wiktorowicz et al. A formal least squares fit of a Rayleigh-Lambert model yields a polarization amplitude of 29.4 {\^A}± 15.6 parts per million. We observe a background constant level of polarization of ~55-70 ppm, which is a little higher than expected for interstellar polarization at the distance of HD 189733.",

author = "K. Bott and J. Bailey and L. Kedziora-Chudczer and Cotton, {D. V.} and Lucas, {P. W.} and Marshall, {J. P.} and Hough, {J. H.}",

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doi = "10.1093/mnrasl/slw046",

language = "English",

volume = "459",

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T1 - The polarization of HD 189733

AU - Bott, K.

AU - Bailey, J.

AU - Kedziora-Chudczer, L.

AU - Cotton, D. V.

AU - Lucas, P. W.

AU - Marshall, J. P.

AU - Hough, J. H.

PY - 2016

Y1 - 2016

N2 - We present linear polarization observations of the exoplanet system HD 189733 made with the HIgh Precision Polarimetric Instrument (HIPPI) on the Anglo-Australian Telescope (AAT). The observations have higher precision than any previously reported for this object. They do not show the large amplitude polarization variations reported by Berdyugina et al. Our results are consistent with polarization data presented by Wiktorowicz et al. A formal least squares fit of a Rayleigh-Lambert model yields a polarization amplitude of 29.4 Â± 15.6 parts per million. We observe a background constant level of polarization of ~55-70 ppm, which is a little higher than expected for interstellar polarization at the distance of HD 189733.

AB - We present linear polarization observations of the exoplanet system HD 189733 made with the HIgh Precision Polarimetric Instrument (HIPPI) on the Anglo-Australian Telescope (AAT). The observations have higher precision than any previously reported for this object. They do not show the large amplitude polarization variations reported by Berdyugina et al. Our results are consistent with polarization data presented by Wiktorowicz et al. A formal least squares fit of a Rayleigh-Lambert model yields a polarization amplitude of 29.4 Â± 15.6 parts per million. We observe a background constant level of polarization of ~55-70 ppm, which is a little higher than expected for interstellar polarization at the distance of HD 189733.

UR - https://hdl.handle.net/1959.7/uws:66939

U2 - 10.1093/mnrasl/slw046

DO - 10.1093/mnrasl/slw046

M3 - Article

SN - 1745-3925

VL - 459

SP - L109-L113

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

ER -

The polarization of HD 189733

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