Near-infrared polarimetry of the Red Rectangle

T. Gledhill; A.N. Witt; U.P. Vijh; C.J. Davis

doi:10.1111/j.1365-2966.2008.14124.x

Near-infrared polarimetry of the Red Rectangle

T. Gledhill, A.N. Witt, U.P. Vijh, C.J. Davis

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Abstract

Imaging polarimetry through J and H broad-band filters and a 3.4 μm narrow-band filter is used to highlight the regions of scattered light in the Red Rectangle. We find that the scattered light identifies the circumbinary dust component of the molecular disc seen in CO emission. This region also appears to be the origin of the recently discovered Blue Luminescence. We find that the degrees of polarization are consistent with the amorphous carbon dust model invoked by Men'shchikov. Spectropolarimetry from 1.4 to 2.5 μm confirms that the degree of polarization in the central arcsecond region is very low. This suggests that the central bicone seen in the near-infrared is predominantly due to emission from hot dust and/or from stochastically heated nanoparticles, rather than due to scattering by large grains.

Original language	English
Pages (from-to)	1217-1224
Journal	Monthly Notices of the Royal Astronomical Society
Volume	392
Issue number	3
DOIs	https://doi.org/10.1111/j.1365-2966.2008.14124.x
Publication status	Published - 2009

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title = "Near-infrared polarimetry of the Red Rectangle",

abstract = "Imaging polarimetry through J and H broad-band filters and a 3.4 μm narrow-band filter is used to highlight the regions of scattered light in the Red Rectangle. We find that the scattered light identifies the circumbinary dust component of the molecular disc seen in CO emission. This region also appears to be the origin of the recently discovered Blue Luminescence. We find that the degrees of polarization are consistent with the amorphous carbon dust model invoked by Men'shchikov. Spectropolarimetry from 1.4 to 2.5 μm confirms that the degree of polarization in the central arcsecond region is very low. This suggests that the central bicone seen in the near-infrared is predominantly due to emission from hot dust and/or from stochastically heated nanoparticles, rather than due to scattering by large grains. ",

author = "T. Gledhill and A.N. Witt and U.P. Vijh and C.J. Davis",

note = "{\textquoteleft}The definitive version is available at www3.interscience.wiley.com '. Copyright Blackwell Publishing / Royal Astronomical Society. DOI: 10.1111/j.1365-2966.2008.14124.x",

year = "2009",

doi = "10.1111/j.1365-2966.2008.14124.x",

language = "English",

volume = "392",

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issn = "0035-8711",

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TY - JOUR

T1 - Near-infrared polarimetry of the Red Rectangle

AU - Gledhill, T.

AU - Witt, A.N.

AU - Vijh, U.P.

AU - Davis, C.J.

N1 - ‘The definitive version is available at www3.interscience.wiley.com '. Copyright Blackwell Publishing / Royal Astronomical Society. DOI: 10.1111/j.1365-2966.2008.14124.x

PY - 2009

Y1 - 2009

N2 - Imaging polarimetry through J and H broad-band filters and a 3.4 μm narrow-band filter is used to highlight the regions of scattered light in the Red Rectangle. We find that the scattered light identifies the circumbinary dust component of the molecular disc seen in CO emission. This region also appears to be the origin of the recently discovered Blue Luminescence. We find that the degrees of polarization are consistent with the amorphous carbon dust model invoked by Men'shchikov. Spectropolarimetry from 1.4 to 2.5 μm confirms that the degree of polarization in the central arcsecond region is very low. This suggests that the central bicone seen in the near-infrared is predominantly due to emission from hot dust and/or from stochastically heated nanoparticles, rather than due to scattering by large grains.

AB - Imaging polarimetry through J and H broad-band filters and a 3.4 μm narrow-band filter is used to highlight the regions of scattered light in the Red Rectangle. We find that the scattered light identifies the circumbinary dust component of the molecular disc seen in CO emission. This region also appears to be the origin of the recently discovered Blue Luminescence. We find that the degrees of polarization are consistent with the amorphous carbon dust model invoked by Men'shchikov. Spectropolarimetry from 1.4 to 2.5 μm confirms that the degree of polarization in the central arcsecond region is very low. This suggests that the central bicone seen in the near-infrared is predominantly due to emission from hot dust and/or from stochastically heated nanoparticles, rather than due to scattering by large grains.

U2 - 10.1111/j.1365-2966.2008.14124.x

DO - 10.1111/j.1365-2966.2008.14124.x

M3 - Article

SN - 0035-8711

VL - 392

SP - 1217

EP - 1224

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

Near-infrared polarimetry of the Red Rectangle

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