Reference : A transit timing variation observed for the long-period extremely low-density exoplan...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/260678
A transit timing variation observed for the long-period extremely low-density exoplanet HIP 41378 f
English
Bryant, Edward M. [Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK <E<MAIL>Edward.bryant@warwick.ac.uk]
Bayliss, Daniel [Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK]
Santerne, Alexandre [Aix Marseille University, CNRS, CNES, LAM, F-13007 Marseille, France]
Wheatley, Peter J. [Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK]
Nascimbeni, Valerio [INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy]
Ducrot, Elsa mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Burdanov, Artem [Astrobiology Research Unit, Université de Liège, Allée du 6 Août 19C, B-4000 Liège, Belgium; Department of Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA]
Acton, Jack S. [School of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK]
Alves, Douglas R. [Departamento de Astronomía, Universidad de Chile, Casilla 36-D Santiago, Chile]
Anderson, David R. [Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK]
Armstrong, David J. [Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK]
Awiphan, Supachai [National Astronomical Research Institute of Thailand, 260 Moo 4, Donkaew, Mae Rim, Chiang Mai 50180, Thailand]
Cooke, Benjamin F. [Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK]
Burleigh, Matthew R. [School of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK]
Casewell, Sarah L. [School of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK]
Delrez, Laetitia mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Demory, Brice-Olivier [University of Bern, Center for Space and Habitability, Gesellschaftsstrasse 6, CH-3012 Bern, Switzerland]
Eigmüller, Philipp [Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, D-12489 Berlin, Germany]
Fukui, Akihiko [Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain]
Gan, Tianjun [Department of Astronomy and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing 100084, China]
Gill, Samuel [Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Goad, Michael R. [School of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK]
Tan, Thiam-Guan [Perth Exoplanet Survey Telescope (PEST), Perth, Western, Australia]
Günther, Maximilian N. [Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA]
Hardee, Bronwen [Department of Earth and Planetary Sciences, University of California, Santa Cruz, CA 95064, USA]
Henderson, Beth A. [School of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK]
Jehin, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Jenkins, James S. [Departamento de Astronomía, Universidad de Chile, Casilla 36-D Santiago, Chile; Centro de Astrofísica y Tecnologías Afines (CATA), Casilla 36-D Santiago, Chile]
Kosiarek, Molly [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA]
Lendl, Monika [Observatoire Astronomique de l'Université de Genève, Chemin Pegasi 51, CH-1290 Versoix, Switzerland]
Moyano, Maximiliano [Instituto de Astronomía, Universidad Católica del Norte, Angamos 0610, 1270709 Antofagasta, Chile]
Murray, Catriona A. [Astrophysics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UK]
Narita, Norio [Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain; Komaba Institute for Science, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan; JST, PRESTO, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan; Astrobiology Center, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan]
Niraula, Prajwal [Department of Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA]
Odden, Caroline E. [Phillips Academy Observatory, Phillips Academy, Andover, MA 01810, USA]
Palle, Enric [Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), E-38206 La Laguna, Tenerife, Spain]
Parviainen, Hannu [Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), E-38206 La Laguna, Tenerife, Spain]
Pedersen, Peter P. [Astrophysics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UK]
Pozuelos, Francisco J. [Astrobiology Research Unit, Université de Liège, 19C Allèe du 6 Août, B-4000 Liège, Belgium; Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, 19C Allèe du 6 Août, B-4000 Liège, Belgium]
V Rackham, Benjamin [Department of Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA]
Sebastian, Daniel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Stockdale, Chris [Hazelwood Observatory, Hazelwood, Australia]
Tilbrook, Rosanna H. [School of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK]
Thompson, Samantha J. [Astrophysics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UK]
Triaud, Amaury H. M. J. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK]
Udry, Stéphane [Observatoire Astronomique de l'Université de Genève, Chemin Pegasi 51, CH-1290 Versoix, Switzerland]
Vines, Jose I. [Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK]
West, Richard G. [Department of Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA)]
de Wit, Julien [> >]
1-Jun-2021
Monthly Notices of the Royal Astronomical Society
Oxford University Press
504
L45
Yes
International
0035-8711
1365-2966
Oxford
United Kingdom
[en] techniques: photometric ; planets and satellites: detection ; planets and satellites: individual: HIP 41378 f ; stars: individual: HIP 41378 ; Astrophysics - Earth and Planetary Astrophysics
[en] HIP 41378 f is a temperate 9.2 ± 0.1 R⊕ planet with period of 542.08 d and an extremely low density of 0.09 ± 0.02 g cm-3. It transits the bright star HIP 41378 (V = 8.93), making it an exciting target for atmospheric characterization including transmission spectroscopy. HIP 41378 was monitored photometrically between the dates of 2019 November 19 and 28. We detected a transit of HIP 41378 f with NGTS, just the third transit ever detected for this planet, which confirms the orbital period. This is also the first ground-based detection of a transit of HIP 41378 f. Additional ground-based photometry was also obtained and used to constrain the time of the transit. The transit was measured to occur 1.50 h earlier than predicted. We use an analytic transit timing variation (TTV) model to show the observed TTV can be explained by interactions between HIP 41378 e and HIP 41378 f. Using our TTV model, we predict the epochs of future transits of HIP 41378 f, with derived transit centres of TC, 4 = 2459 355.087-0.022+0.031 (2021 May) and TC, 5 = 2459 897.078-0.060+0.114 (2022 November).
Professionals
http://hdl.handle.net/2268/260678
10.1093/mnrasl/slab037
https://ui.adsabs.harvard.edu/abs/2021MNRAS.504L..45B

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