10 μm polarimetry of ceres

Paul E. Johnson; James C. Kemp; Marcia J. Lebofsky; George H. Rieke

doi:10.1016/0019-1035(83)90159-8

10 μm polarimetry of ceres

Paul E. Johnson, James C. Kemp, Marcia J. Lebofsky, George H. Rieke

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Abstract

Linear polarimetry of Ceres at 10 μm is presented. These data represent the first published polarization measurements of an asteroid in the thermal infrared. It is found that Ceres is polarized at the 0.2-0.6% level. This data set is compared with theoretical models of the linear polarization of emitted radiation from a spherical plane. These models are used to derive the pole position and thermal inertia of Ceres. Ceres is best fit with a thermal inertia of 0.0010±0.0003 cal cm^-2 °K^-1 sec^{1 2} and a pole orientation of β_p = 36° ± 5°, λ_p = 270° ± 3°. It is concluded that 10μm polarimetry is a potentially powerful technique for remotely sensing the pole orientation and thermal inertia of asteroids.

Original language	English (US)
Pages (from-to)	381-392
Number of pages	12
Journal	Icarus
Volume	56
Issue number	3
DOIs	https://doi.org/10.1016/0019-1035(83)90159-8
State	Published - Dec 1983

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1016/0019-1035(83)90159-8

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title = "10 μm polarimetry of ceres",

abstract = "Linear polarimetry of Ceres at 10 μm is presented. These data represent the first published polarization measurements of an asteroid in the thermal infrared. It is found that Ceres is polarized at the 0.2-0.6% level. This data set is compared with theoretical models of the linear polarization of emitted radiation from a spherical plane. These models are used to derive the pole position and thermal inertia of Ceres. Ceres is best fit with a thermal inertia of 0.0010±0.0003 cal cm-2 °K-1 sec 1 2 and a pole orientation of βp = 36° ± 5°, λp = 270° ± 3°. It is concluded that 10μm polarimetry is a potentially powerful technique for remotely sensing the pole orientation and thermal inertia of asteroids.",

author = "Johnson, {Paul E.} and Kemp, {James C.} and Lebofsky, {Marcia J.} and Rieke, {George H.}",

year = "1983",

month = dec,

doi = "10.1016/0019-1035(83)90159-8",

language = "English (US)",

volume = "56",

pages = "381--392",

journal = "Icarus",

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TY - JOUR

T1 - 10 μm polarimetry of ceres

AU - Johnson, Paul E.

AU - Kemp, James C.

AU - Lebofsky, Marcia J.

AU - Rieke, George H.

PY - 1983/12

Y1 - 1983/12

N2 - Linear polarimetry of Ceres at 10 μm is presented. These data represent the first published polarization measurements of an asteroid in the thermal infrared. It is found that Ceres is polarized at the 0.2-0.6% level. This data set is compared with theoretical models of the linear polarization of emitted radiation from a spherical plane. These models are used to derive the pole position and thermal inertia of Ceres. Ceres is best fit with a thermal inertia of 0.0010±0.0003 cal cm-2 °K-1 sec 1 2 and a pole orientation of βp = 36° ± 5°, λp = 270° ± 3°. It is concluded that 10μm polarimetry is a potentially powerful technique for remotely sensing the pole orientation and thermal inertia of asteroids.

AB - Linear polarimetry of Ceres at 10 μm is presented. These data represent the first published polarization measurements of an asteroid in the thermal infrared. It is found that Ceres is polarized at the 0.2-0.6% level. This data set is compared with theoretical models of the linear polarization of emitted radiation from a spherical plane. These models are used to derive the pole position and thermal inertia of Ceres. Ceres is best fit with a thermal inertia of 0.0010±0.0003 cal cm-2 °K-1 sec 1 2 and a pole orientation of βp = 36° ± 5°, λp = 270° ± 3°. It is concluded that 10μm polarimetry is a potentially powerful technique for remotely sensing the pole orientation and thermal inertia of asteroids.

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DO - 10.1016/0019-1035(83)90159-8

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VL - 56

SP - 381

EP - 392

JO - Icarus

JF - Icarus

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10 μm polarimetry of ceres

Abstract

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