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Global and temporal variations in hydrocarbons and nitriles in Titan's stratosphere for northern winter observed by Cassini/CIRS

Icarus Elsevier 193:2 (2008) 595-611

Authors:

NA Teanby, PGJ Irwin, R de Kok, CA Nixon, A Coustenis, E Royer, SB Calcutt, NE Bowles, L Fletcher, C Howett, FW Taylor
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The "DODO" survey I: limits on ultra-cool substellar and planetary-mass companions to van Maanen's star (vMa 2)

(2008)

Authors:

MR Burleigh, FJ Clarke, E Hogan, CS Brinkworth, P Bergeron, P Dufour, PD Dobbie, AJ Levan, ST Hodgkin, DW Hoard, S Wachter
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Temperature and Composition of Saturn's Polar Hot Spots and Hexagon

Science American Association for the Advancement of Science (AAAS) 319:5859 (2008) 79-81

Authors:

LN Fletcher, PGJ Irwin, GS Orton, NA Teanby, RK Achterberg, GL Bjoraker, PL Read, AA Simon-Miller, C Howett, R de Kok, N Bowles, SB Calcutt, B Hesman, FM Flasar
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Temperature and composition of Saturn's polar hot spots and hexagon.

Science 319:5859 (2008) 79-81

Authors:

LN Fletcher, PGJ Irwin, GS Orton, NA Teanby, RK Achterberg, GL Bjoraker, PL Read, AA Simon-Miller, C Howett, R de Kok, N Bowles, SB Calcutt, B Hesman, FM Flasar

Abstract:

Saturn's poles exhibit an unexpected symmetry in hot, cyclonic polar vortices, despite huge seasonal differences in solar flux. The cores of both vortices are depleted in phosphine gas, probably resulting from subsidence of air into the troposphere. The warm cores are present throughout the upper troposphere and stratosphere at both poles. The thermal structure associated with the marked hexagonal polar jet at 77 degrees N has been observed for the first time. Both the warm cyclonic belt at 79 degrees N and the cold anticyclonic zone at 75 degrees N exhibit the hexagonal structure.
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A search for J-band variability from late-L and T brown dwarfs

Monthly Notices of the Royal Astronomical Society 386:4 (2008) 2009-2014

Authors:

FJ Clarke, ST Hodgkin, BR Oppenheimer, J Robertson, X Haubois

Abstract:

We present J-band photometric observations of eight late-L and T type brown dwarfs designed to search for variability. We detect small amplitude periodic variability from three of the objects on time-scales of several hours, probably indicating the rotation period of the objects. The other targets do not show any variability down to the level of 0.5-5 per cent © 2008 RAS.
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