Dr John Taylor j.k.taylor@keele.ac.uk
VLT, GROND, AND DANISH TELESCOPE OBSERVATIONS OF TRANSITS IN THE TRAPPIST-I SYSTEM
Southworth, J.; Mancini, L.; Dominik, M.; Jørgensen, U.G.; Bozza, V.; Burgdorf, M.J.; Figuera Jaimes, R.; Haikala, L.K.; Henning, Th.; Hinse, T.C.; Hundertmark, M.; Longa-Pe˜na, P.; Rabus, M.; Rahvar, S.; Sajadian, S.; Skottfelt, J.; Snodgrass, C.
Authors
L. Mancini
M. Dominik
U.G. Jørgensen
V. Bozza
M.J. Burgdorf
R. Figuera Jaimes
L.K. Haikala
Th. Henning
T.C. Hinse
M. Hundertmark
P. Longa-Pe˜na
M. Rabus
S. Rahvar
S. Sajadian
J. Skottfelt
C. Snodgrass
Abstract
TRAPPIST-1 is an ultra-cool dwarf that hosts seven known transiting planets. We present photometry of the system obtained using three telescopes at ESO La Silla (the Danish 1.54 m telescope and the 2.2 m MPI telescope) and Paranal (Unit Telescope 1 of the Very Large Telescope). We obtained 18 light curves from the Danish telescope, eight from the 2.2 m and four from the VLT. From these we measure 25 times of mid-transit for four of the planets (b, c, f, g). These light curves and times of mid-transit will be useful in determining the masses and radii of the planets, which show variations in their transit times due to gravitational interactions.
Acceptance Date | Oct 1, 2022 |
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Publication Date | Oct 31, 2022 |
Publicly Available Date | Nov 1, 2023 |
Journal | OBSERVATORY |
Print ISSN | 0029-7704 |
Peer Reviewed | Peer Reviewed |
Volume | 142 |
Pages | 220 - 229 |
Files
trappist1.pdf
(335 Kb)
PDF
Publisher Licence URL
https://creativecommons.org/licenses/by-nc/4.0/
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