Title of article :
Thermal response of Iapetus to an eclipse by Saturnʹs rings
Author/Authors :
Neugebauer، نويسنده , , G. and Matthews، نويسنده , , K. and Nicholson، نويسنده , , P.D. and Soifer، نويسنده , , B.T. and Gatley، نويسنده , , I. and Beckwith، نويسنده , , S.V.W.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
Measurements of Iapetus as seen at 20 and 2.2 μm in the shadow of Saturnʹs 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 J m −2 s − 1 / 2 K −1 .
Keywords :
Infrared observations , Planetary rings , Saturn , satellites of Saturn , eclipses
