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

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

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-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 language	English
Journal	Observatory
Publication status	Accepted/In press - 10 Jul 2022

Keywords

astro-ph.EP

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2207.05874v1Accepted author manuscript, 373 KBLicence: Creative Commons: Attribution (CC-BY)

https://arxiv.org/abs/2207.05874Licence: Creative Commons: Attribution (CC-BY)

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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-Peña, P., Rabus, M., Rahvar, S., Sajadian, S., Skottfelt, J., & Snodgrass, C. (Accepted/In press). VLT, GROND and Danish Telescope observations of transits in the TRAPPIST-1 system. Observatory. https://arxiv.org/abs/2207.05874

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

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. ",

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author = "John Southworth and L. Mancini and M. Dominik and J{\o}rgensen, {U. G.} and V. Bozza and Burgdorf, {M. J.} and Jaimes, {R. Figuera} and Haikala, {L. K.} and Th Henning and Hinse, {T. C.} and M. Hundertmark and P. Longa-Pe{\~n}a and M. Rabus and S. Rahvar and S. Sajadian and J. Skottfelt and C. Snodgrass",

note = "Accepted for publication in The Observatory Magazine. 11 pages, 3 tables, 3 figures",

year = "2022",

month = jul,

day = "10",

language = "English",

journal = "Observatory",

issn = "0029-7704",

publisher = "Rutherford Appleton Laboratory",

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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-Peña, P.

AU - Rabus, M.

AU - Rahvar, S.

AU - Sajadian, S.

AU - Skottfelt, J.

AU - Snodgrass, C.

N1 - Accepted for publication in The Observatory Magazine. 11 pages, 3 tables, 3 figures

PY - 2022/7/10

Y1 - 2022/7/10

N2 - 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.

AB - 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.

KW - astro-ph.EP

M3 - Article

JO - Observatory

JF - Observatory

SN - 0029-7704

ER -

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

Abstract

Keywords

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