Universität zu Köln

Kutsop, N. W., Hayes, A. G., Corlies, P. M., Le Mouelic, S., Lunine, J. I., Nixon, C. A., Rannou, P., Rodriguez, S., Roman, M. T., Sotin, C. and Tokano, T. (2022). Titan Stratospheric Haze Bands Observed in Cassini VIMS as Tracers of Meridional Circulation. Planet. Sci. J., 3 (5). BRISTOL: IOP Publishing Ltd. ISSN 2632-3338

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Abstract

We analyzed Cassini data to derive the nature and evolution of circumglobal annuli observed in the stratosphere of Titan, Saturn's largest moon. The annuli were observed between 2004 and 2017 in data acquired by the Visual and Infrared Mapping Spectrometer on board the Cassini spacecraft. We observed a north polar annulus, an equatorial annulus, and several secondary annuli. Pre-Cassini telescopic observations by the Hubble Space Telescope and Keck reported an atmospheric feature consistent with the presence of a south polar annulus between 1999 and 2001, although this feature was not observed by Cassini. Relative to the atmosphere near the annuli, they appear dark at 300-500 nm and bright in methane absorption channels such as the ones at 900 and 1150 nm. The stratosphere seems to rotate around the north pole. Alternatively, it seems to rotate about a point offset from solid-body rotation axis by a few degrees; this point in turn rotates around the solid-body rotation axis.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kutsop, N. W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hayes, A. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Corlies, P. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Le Mouelic, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lunine, J. I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nixon, C. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rannou, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rodriguez, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Roman, M. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sotin, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tokano, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-692073
DOI:	10.3847/PSJ/ac582d
Journal or Publication Title:	Planet. Sci. J.
Volume:	3
Number:	5
Date:	2022
Publisher:	IOP Publishing Ltd
Place of Publication:	BRISTOL
ISSN:	2632-3338
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HUYGENS LANDING SITE; COUPLING PHOTOCHEMISTRY; GENERAL-CIRCULATION; SEASONAL CHANGE; ATMOSPHERE; METHANE; MODEL; DYNAMICS; MIDDLE; CLOUD Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/69207