Haze in Pluto's atmosphere: Results from SOFIA and ground-based observations of the 2015 June 29 Pluto occultation
| Autor: | Bryce A. Babcock, L. Bright, Paul J. Tristram, Stephanie Sallum, C. J. K. Morley, William D. Vacca, Manuel Wiedemann, Stephen E. Levine, P. M. Kilmartin, S. Mathers, K. Leppik, Peter F. Nelson, Chris Johnson, Amanda S. Bosh, Carlos A. Zuluaga, Jay M. Pasachoff, Daisuke Suzuki, Molly R. Kosiarek, Rebecca F. Durst, Ho Chit Siu, Ian S. McLean, Thanawuth Thanathibodee, Trudy Tilleman, Eric E. Becklin, Amanda A. Sickafoose, Sarah E. Logsdon, C. H. Seeger, Edward W. Dunham, M. Savage, Fumio Abe, E. Pfüller, Ryan T. Hamilton, Luke Weisenbach, Tim Natusch, Hugh C. Harris, Chris Stockdale, Haydn Ngan, Elizabeth Widen, Jeffrey Van Cleve, R. Lucas, A. C. Gilmore, Carolle Varughese, Jürgen Wolf, G. W. Christie, Thomas A. Bida |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Bright star
Haze 010504 meteorology & atmospheric sciences Stratospheric Observatory for Infrared Astronomy Astronomy Astronomy and Astrophysics Astrometry Light curve 01 natural sciences Occultation Pluto Atmosphere Space and Planetary Science 0103 physical sciences 010303 astronomy & astrophysics Geology 0105 earth and related environmental sciences |
| Popis: | On UT 29 June 2015, the occultation by Pluto of a bright star (r′ = 11.9) was observed from the Stratospheric Observatory for Infrared Astronomy (SOFIA) and several ground-based stations in New Zealand and Australia. Pre-event astrometry allowed for an in-flight update to the SOFIA team with the result that SOFIA was deep within the central flash zone (~22 km from center). Analysis of the combined data leads to the result that Pluto's middle atmosphere is essentially unchanged from 2011 and 2013 (Person et al. 2013; Bosh et al. 2015); there has been no significant expansion or contraction of the atmosphere. Additionally, our multi-wavelength observations allow us to conclude that a haze component in the atmosphere is required to reproduce the light curves obtained. This haze scenario has implications for understanding the photochemistry of Pluto's atmosphere. |
| Databáze: | OpenAIRE |
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