Surface composition and radius of hyperion

Dale P. Chuikshank; R. Hamilton Brown

doi:10.1016/0019-1035(82)90100-2

Surface composition and radius of hyperion

Dale P. Chuikshank, R. Hamilton Brown

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

18 Scopus citations

Abstract

New spectrophotometric data for Hyperion in the region 1.5-2.6 um obtained in 1981 confirm the presence of water ice bands reported by D.P. Cruikshank (1980, Icarus 41, 246-258). The bands are now shown with sufficient clarity to permit improved comparisons with other ice-bearing satellites of Jupiter and Saturn and with laboratory samples. Comparisons with Ganymede and Rhea are shown, and Hyperion is found to differ from both satellites in terms of depth and width of the water ice bands. The sense of the difference is the same as noted earlier from broadband infrared photometry, but the physical cause is not fully understood. The effective radius of Hyperion (considered circular in cross section) derived from a 20-um flux measurement and a revised value of V(1,0) = 4.62 is r = 140 ± 19 km. This result is in better accord with both preliminary and refined values of the radius derived from Voyager images; the Voyager result supercedes that deduced from infrared observations.

Original language	English (US)
Pages (from-to)	82-87
Number of pages	6
Journal	Icarus
Volume	50
Issue number	1
DOIs	https://doi.org/10.1016/0019-1035(82)90100-2
State	Published - Apr 1982
Externally published	Yes

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1016/0019-1035(82)90100-2

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@article{b317a60337ab4b4580d5ec3498e8383b,

title = "Surface composition and radius of hyperion",

abstract = "New spectrophotometric data for Hyperion in the region 1.5-2.6 um obtained in 1981 confirm the presence of water ice bands reported by D.P. Cruikshank (1980, Icarus 41, 246-258). The bands are now shown with sufficient clarity to permit improved comparisons with other ice-bearing satellites of Jupiter and Saturn and with laboratory samples. Comparisons with Ganymede and Rhea are shown, and Hyperion is found to differ from both satellites in terms of depth and width of the water ice bands. The sense of the difference is the same as noted earlier from broadband infrared photometry, but the physical cause is not fully understood. The effective radius of Hyperion (considered circular in cross section) derived from a 20-um flux measurement and a revised value of V(1,0) = 4.62 is r = 140 ± 19 km. This result is in better accord with both preliminary and refined values of the radius derived from Voyager images; the Voyager result supercedes that deduced from infrared observations.",

author = "Chuikshank, {Dale P.} and {Hamilton Brown}, R.",

note = "Funding Information: We thankD r. PeterT homasfo r permissiotno quote resultso btainedb y him and his colleagueisn advance of publicationS. upportedin part by NASA Grants NGL 12-001-05a7n dNSG 7312.",

year = "1982",

month = apr,

doi = "10.1016/0019-1035(82)90100-2",

language = "English (US)",

volume = "50",

pages = "82--87",

journal = "Icarus",

issn = "0019-1035",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Surface composition and radius of hyperion

AU - Chuikshank, Dale P.

AU - Hamilton Brown, R.

N1 - Funding Information: We thankD r. PeterT homasfo r permissiotno quote resultso btainedb y him and his colleagueisn advance of publicationS. upportedin part by NASA Grants NGL 12-001-05a7n dNSG 7312.

PY - 1982/4

Y1 - 1982/4

N2 - New spectrophotometric data for Hyperion in the region 1.5-2.6 um obtained in 1981 confirm the presence of water ice bands reported by D.P. Cruikshank (1980, Icarus 41, 246-258). The bands are now shown with sufficient clarity to permit improved comparisons with other ice-bearing satellites of Jupiter and Saturn and with laboratory samples. Comparisons with Ganymede and Rhea are shown, and Hyperion is found to differ from both satellites in terms of depth and width of the water ice bands. The sense of the difference is the same as noted earlier from broadband infrared photometry, but the physical cause is not fully understood. The effective radius of Hyperion (considered circular in cross section) derived from a 20-um flux measurement and a revised value of V(1,0) = 4.62 is r = 140 ± 19 km. This result is in better accord with both preliminary and refined values of the radius derived from Voyager images; the Voyager result supercedes that deduced from infrared observations.

AB - New spectrophotometric data for Hyperion in the region 1.5-2.6 um obtained in 1981 confirm the presence of water ice bands reported by D.P. Cruikshank (1980, Icarus 41, 246-258). The bands are now shown with sufficient clarity to permit improved comparisons with other ice-bearing satellites of Jupiter and Saturn and with laboratory samples. Comparisons with Ganymede and Rhea are shown, and Hyperion is found to differ from both satellites in terms of depth and width of the water ice bands. The sense of the difference is the same as noted earlier from broadband infrared photometry, but the physical cause is not fully understood. The effective radius of Hyperion (considered circular in cross section) derived from a 20-um flux measurement and a revised value of V(1,0) = 4.62 is r = 140 ± 19 km. This result is in better accord with both preliminary and refined values of the radius derived from Voyager images; the Voyager result supercedes that deduced from infrared observations.

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U2 - 10.1016/0019-1035(82)90100-2

DO - 10.1016/0019-1035(82)90100-2

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AN - SCOPUS:0043283606

SN - 0019-1035

VL - 50

SP - 82

EP - 87

JO - Icarus

JF - Icarus

IS - 1

ER -

Surface composition and radius of hyperion

Abstract

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