Thermal response of Iapetus to an eclipse by Saturn's rings

G. Neugebauer; K. Matthews; P. D. Nicholson; B. T. Soifer; I. Gatley; S. V.W. Beckwith

doi:10.1016/j.icarus.2005.03.002

Thermal response of Iapetus to an eclipse by Saturn's rings

G. Neugebauer, K. Matthews, P. D. Nicholson, B. T. Soifer, I. Gatley, S. V.W. Beckwith

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

8 Scopus citations

Abstract

Measurements of Iapetus as seen at 20 and 2.2 μm in the shadow of Saturn's ring are given, providing the thermal response to a rapidly varying heat input. The 20 μm thermal emission follows the 2.2 μm flux input closely. The observations, plus a simple diffusion calculation, imply that the surface of Iapetus is made of material having a very small thermal inertia, probably I ≲ 10 Jm^-2 s^-1/2 K^-1.

Original language	English (US)
Pages (from-to)	63-68
Number of pages	6
Journal	Icarus
Volume	177
Issue number	1
DOIs	https://doi.org/10.1016/j.icarus.2005.03.002
State	Published - Sep 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Eclipses
Infrared observations
Planetary rings
Satellites of Saturn
Saturn

Access to Document

10.1016/j.icarus.2005.03.002

Cite this

@article{d5052a9ea753420096efdda89d47b80d,

title = "Thermal response of Iapetus to an eclipse by Saturn's rings",

abstract = "Measurements of Iapetus as seen at 20 and 2.2 μm in the shadow of Saturn's ring are given, providing the thermal response to a rapidly varying heat input. The 20 μm thermal emission follows the 2.2 μm flux input closely. The observations, plus a simple diffusion calculation, imply that the surface of Iapetus is made of material having a very small thermal inertia, probably I ≲ 10 Jm-2 s-1/2 K-1.",

keywords = "Eclipses, Infrared observations, Planetary rings, Satellites of Saturn, Saturn",

author = "G. Neugebauer and K. Matthews and Nicholson, \{P. D.\} and Soifer, \{B. T.\} and I. Gatley and Beckwith, \{S. V.W.\}",

note = "Funding Information: We thank the staff of Palomar Observatory for their help in making the observations and M. Neugebauer and D. Behkne for help with the manuscript and E. Harrison and J.R. Spencer for helpful comments. This work was supported by the NSF.",

year = "2005",

month = sep,

doi = "10.1016/j.icarus.2005.03.002",

language = "English (US)",

volume = "177",

pages = "63--68",

journal = "Icarus",

issn = "0019-1035",

publisher = "Academic Press Inc.",

number = "1",

}

TY - JOUR

T1 - Thermal response of Iapetus to an eclipse by Saturn's rings

AU - Neugebauer, G.

AU - Matthews, K.

AU - Nicholson, P. D.

AU - Soifer, B. T.

AU - Gatley, I.

AU - Beckwith, S. V.W.

N1 - Funding Information: We thank the staff of Palomar Observatory for their help in making the observations and M. Neugebauer and D. Behkne for help with the manuscript and E. Harrison and J.R. Spencer for helpful comments. This work was supported by the NSF.

PY - 2005/9

Y1 - 2005/9

N2 - Measurements of Iapetus as seen at 20 and 2.2 μm in the shadow of Saturn's ring are given, providing the thermal response to a rapidly varying heat input. The 20 μm thermal emission follows the 2.2 μm flux input closely. The observations, plus a simple diffusion calculation, imply that the surface of Iapetus is made of material having a very small thermal inertia, probably I ≲ 10 Jm-2 s-1/2 K-1.

AB - Measurements of Iapetus as seen at 20 and 2.2 μm in the shadow of Saturn's ring are given, providing the thermal response to a rapidly varying heat input. The 20 μm thermal emission follows the 2.2 μm flux input closely. The observations, plus a simple diffusion calculation, imply that the surface of Iapetus is made of material having a very small thermal inertia, probably I ≲ 10 Jm-2 s-1/2 K-1.

KW - Eclipses

KW - Infrared observations

KW - Planetary rings

KW - Satellites of Saturn

KW - Saturn

UR - https://www.scopus.com/pages/publications/23744501568

UR - https://www.scopus.com/inward/citedby.url?scp=23744501568&partnerID=8YFLogxK

U2 - 10.1016/j.icarus.2005.03.002

DO - 10.1016/j.icarus.2005.03.002

M3 - Article

AN - SCOPUS:23744501568

SN - 0019-1035

VL - 177

SP - 63

EP - 68

JO - Icarus

JF - Icarus

IS - 1

ER -

Thermal response of Iapetus to an eclipse by Saturn's rings

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this