TITAN'S SURFACE BRIGHTNESS TEMPERATURES
| Autor: | Paul N. Romani, Athena Coustenis, Gordon L. Bjoraker, Richard K. Achterberg, S. A. Albright, E. Guandique, A. A. Mamoutkine, Régis Courtin, Robert E. Samuelson, Ronald Carlson, M. E. Segura, M. H. Elliott, John C. Brasunas, Conor A. Nixon, John C. Pearl, V. G. Kunde, D. E. Jennings, J. S. Tingley, F. M. Flasar, S. B. Calcutt |
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| Přispěvatelé: | Goddard Space Flight Center, NASA, Astrophysics Science Division, Oxford University, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pôle Planétologie du LESIA, Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | The Astrophysical journal letters The Astrophysical journal letters, 2009, 691, pp.L103-L105. ⟨10.1088/0004-637X/691/2/L103⟩ |
| ISSN: | 2041-8205 2041-8213 |
| DOI: | 10.1088/0004-637X/691/2/L103⟩ |
| Popis: | Radiance from the surface of Titan can be detected from space through a spectral window of low opacity in the thermal infrared at 19 μm (530 cm -1). By combining Composite Infrared Spectrometer observations from Cassini's first four years, we have mapped the latitude distribution of zonally averaged surface brightness temperatures. The measurements are corrected for atmospheric opacity as derived from the dependence of radiance on the emission angle. At equatorial latitudes near the Huygens landing site, the surface brightness temperature is found to be 93.7 0.6 K, in excellent agreement with the in situ measurement. Temperature decreases toward the poles, reaching 90.5 0.8 K at 87°N and 91.7 0.7 K at 88°S. The meridional distribution of temperature has a maximum near 10°S, consistent with Titan's late northern winter. © 2009 The American Astronomical Society. All rights reserved. |
| Databáze: | OpenAIRE |
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