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-Pena; M. Rabus; S. Rahvar; S. Sajadian; J. Skottfelt; C. Snodgrass

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-Pena
, M. Rabus
, S. Rahvar
, S. Sajadian
, J. Skottfelt
, C. Snodgrass

^*Corresponding author af dette arbejde

Astrofysik og Planetforskning

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning

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Abstract

TRAPPIST-I 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 I of the Very Large Telescope). We obtained I8 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.

Originalsprog	Engelsk
Tidsskrift	Observatory
Vol/bind	142
Udgave nummer	1290
Antal sider	11
ISSN	0029-7704
Status	Accepteret/In press - 2022

Finansiering

UGJ acknowledges funding from the Novo Nordisk Foundation Interdisciplinary Synergy Programme grant no. NNF19OC0057374 and from the European Union H2020-MSCA-ITN-2019 under Grant no. 860470 (CHAMELEON). NP's work was supported by Fundacao para a Ciencia e a Tecnologia (FCT) through the research grants UIDB/04434/2020 and UIDP/04434/2020. PLP was partly funded by Programa de Iniciacion en Investigacion Universidad de Antofagasta, INI-17-03.

Adgang til dokumentet

FulltextIndsendt manuskript, 373 KBLicens: CC BY

https://arxiv.org/abs/2207.05874v2Licens: CC BY

Citationsformater

Southworth, J., Mancini, L., Dominik, M., Jørgensen, U. G., Bozza, V., Burgdorf, M. J., Jaimes, R. F., Haikala, L. K., Henning, T., Hinse, T. C., Hundertmark, M., Longa-Pena, P., Rabus, M., Rahvar, S., Sajadian, S., Skottfelt, J., & Snodgrass, C. (Accepteret/In press). VLT, GROND and Danish Telescope observations of transits in the TRAPPIST-1 system. Observatory, 142(1290). https://arxiv.org/abs/2207.05874v2

Southworth, J, Mancini, L, Dominik, M, Jørgensen, UG, Bozza, V, Burgdorf, MJ, Jaimes, RF, Haikala, LK, Henning, T, Hinse, TC, Hundertmark, M, Longa-Pena, P, Rabus, M, Rahvar, S, Sajadian, S, Skottfelt, J & Snodgrass, C 2022, 'VLT, GROND and Danish Telescope observations of transits in the TRAPPIST-1 system', Observatory, bind 142, nr. 1290. <https://arxiv.org/abs/2207.05874v2>

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abstract = "TRAPPIST-I 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 I of the Very Large Telescope). We obtained I8 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.",

keywords = "HIGH-PRECISION PHOTOMETRY, EARTH-SIZED PLANETS, TERRESTRIAL PLANETS, ATMOSPHERES, PARAMETERS",

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TY - JOUR

T1 - VLT, GROND and Danish Telescope observations of transits in the TRAPPIST-1 system

AU - Southworth, John

AU - Mancini, L.

AU - Dominik, M.

AU - Jørgensen, U. G.

AU - Bozza, V.

AU - Burgdorf, M. J.

AU - Jaimes, R. Figuera

AU - Haikala, L. K.

AU - Henning, Th

AU - Hinse, T. C.

AU - Hundertmark, M.

AU - Longa-Pena, P.

AU - Rabus, M.

AU - Rahvar, S.

AU - Sajadian, S.

AU - Skottfelt, J.

AU - Snodgrass, C.

PY - 2022

Y1 - 2022

N2 - TRAPPIST-I 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 I of the Very Large Telescope). We obtained I8 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.

AB - TRAPPIST-I 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 I of the Very Large Telescope). We obtained I8 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.

KW - HIGH-PRECISION PHOTOMETRY

KW - EARTH-SIZED PLANETS

KW - TERRESTRIAL PLANETS

KW - ATMOSPHERES

KW - PARAMETERS

M3 - Journal article

SN - 0029-7704

VL - 142

JO - Observatory

JF - Observatory

IS - 1290

ER -