VLT, GROND and Danish Telescope observations of transits in the TRAPPIST-1 system

John Southworth*, 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-Peña, M. Rabus, S. Rahvar, S. Sajadian, J. Skottfelt, C. Snodgrass

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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.
Original languageEnglish
JournalObservatory
Publication statusAccepted/In press - 10 Jul 2022

Keywords

  • astro-ph.EP

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