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On the hunt for Trappist-1 siblings
Queloz, Didier; Gillon, Michaël
2019In AAS/Division for Extreme Solar Systems Abstracts
 

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Abstract :
[en] The TRAPPIST-South 60cm telescope at La Silla (ESO) is famously known for its detection of the extraordinary TRAPPIST-1 planetary system. A discovery made during the prototype phase of our ultra-cool dwarf transit survey SPECULOOS (Search for Planets EClipsing ULtra-cOOl Stars). This talk will first report on the self-consistence transit occurrence analysis of all observations of 42 bright ultra-cool dwarfs made with TRAPPIST-South during a period ranging from 2011 to 2017. On the basis that, with the exception of the discovery of TRAPPIST-1 planets, we didn't detect any other significant transiting event, we concluded on a 10% lower limit for the occurrence of planets similar to TRAPPIST-1b in this sample. The outcome is very sensitive to the size and period of the planet considered. A comprehensive statistic will be presented. Finally, performance obtained with our recently commissioned SPECULOOS Southern facility installed at Paranal will be presented. The lower occurrence limit measured with TRAPPIST survey will be compared with early results from 6 months of continue SPECULOOS core survey operations <P />
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Queloz, Didier;  U. Cambridge (Cambridge, United Kingdom)
Gillon, Michaël  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Language :
English
Title :
On the hunt for Trappist-1 siblings
Publication date :
01 August 2019
Event name :
Extreme Solar Systems 4
Event date :
19-23 August 2019
Audience :
International
Main work title :
AAS/Division for Extreme Solar Systems Abstracts
Commentary :
51
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