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Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/7918
Title: Pluto's Atmosphere in Plateau Phase Since 2015 from a Stellar Occultation at Devasthal
Authors: Sicardy, Bruno
Nagarhalli M, Ashok
Tej, Anandmayee
Pawar, Ganesh
Deshmukh, Shishir
Deshpande, Ameya
Sharma, Saurabh
Desmars, Josselin
Assafin, Marcelo
Ortiz, Jose Luis
Benedetti-Rossi, Gustavo
Braga-Ribas, Felipe
Vieira-Martins, Roberto
Santos-Sanz, Pablo
Chand, Krishan
Bhatt, B. C
Keywords: Pluto
Planetary atmospheres
Stellar occultation
Issue Date: 20-Dec-2021
Publisher: IOP Publishing
Citation: The Astrophysical Journal Letters, Vol.923, No. 2, L31
Abstract: A stellar occultation by Pluto was observed on 2020 June 6 with the 1.3 m and 3.6 m telescopes located at Devasthal, Nainital, India, using imaging systems in the I and H bands, respectively. From this event, we derive a surface pressure for Pluto’s atmosphere of = - + p 12.23 surf 0.38 0.65 μbar. This shows that Pluto’s atmosphere has been in a plateau phase since mid-2015, a result which is in excellent agreement with the Pluto volatile transport model of Meza et al. This value does not support the pressure decrease reported by independent teams, based on occultations observed in 2018 and 2019 by Young et al. and Arimatsu et al., respectively.
Description: Open access
Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
URI: http://hdl.handle.net/2248/7918
ISSN: 2041-8213
Appears in Collections:IIAP Publications

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