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artículo
E.M. acknowledges support from the Contrato de subvención 205-2014 Fondecyt—Concytec, Perú.
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artículo
Publicado 2016
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Enlace
We present results from a multi-chord Pluto stellar occultation observed on 2015 June 29 from New Zealand and Australia. This occurred only two weeks before the NASA New Horizons flyby of the Pluto system and serves as a useful comparison between ground-based and space results. We find that Pluto's atmosphere is still expanding, with a significant pressure increase of 5 +/- 2% since 2013 and a factor of almost three since 1988. This trend rules out, as of today, an atmospheric collapse associated with Pluto's recession from the Sun. A central flash, a rare occurrence, was observed from several sites in New Zealand. The flash shape and amplitude are compatible with a spherical and transparent atmospheric layer of roughly 3 km in thickness whose base lies at about 4 km above Pluto's surface, and where an average thermal gradient of about 5 K km(-1) prevails. We discuss the possibility that...
3
artículo
acknowledges support from the Contrato de subvención 205–2014 Fondecyt—Concytec, Perú.