A transit timing variation observed for the long-period extremely low-density exoplanet HIP 41378 f

Bryant, Edward M and Bayliss, Daniel and Santerne, Alexandre and Wheatley, Peter J and Nascimbeni, Valerio and Ducrot, Elsa and Burdanov, Artem and Acton, Jack S and Alves, Douglas R. and Anderson, David R and Armstrong, David J and Awiphan, Supachai and Cooke, Benjamin F and Burleigh, Matthew R and Casewell, Sarah L and Delrez, Laetitia and Demory, Brice-Olivier and Eigmüller, Philipp and Fukui, Akihiko and Gan, Tianjun and Gill, Samuel and Gillon, Michael and Goad, Michael R and Tan, Thiam-Guan and Gunther, Maximilian N. and Hardee, Bronwen and Henderson, Beth and Jehin, Emmanuel and Jenkins, James S and Kosiarek, Molly and Lendl, Monika and Moyano, Maximiliano and Murray, Catriona and Narita, Norio and Niraula, Prajwal and Odden, Caroline and Palle, Enric and Parviainen, Hannu and Pedersen, Peter P and Pozuelos, Francisco J and V Rackham, Benjamin and Sebastian, Daniel and Stockdale, Chris and Tilbrook, Rosanna and Thompson, Samantha J. and Triaud, Amaury and Udry, Stephane and Vines, Jose I and West, Richard G and de Wit, Julien (2021) A transit timing variation observed for the long-period extremely low-density exoplanet HIP 41378 f. Monthly Notices of the Royal Astronomical Society: Letters, 504 (1), L45-L50. Oxford University Press. doi: 10.1093/mnrasl/slab037. ISSN 1745-3925.

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Official URL: https://academic.oup.com/mnrasl/article/504/1/L45/6228864

Abstract

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).

Item URL in elib:

https://elib.dlr.de/142360/

Document Type:

Article

Title:

A transit timing variation observed for the long-period extremely low-density exoplanet HIP 41378 f

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Bryant, Edward M	Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
Bayliss, Daniel	University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
Santerne, Alexandre	Aix-Marseille Université, CNRS, CNES, LAM, Marseilles, France	UNSPECIFIED	UNSPECIFIED
Wheatley, Peter J	Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
Nascimbeni, Valerio	INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy	UNSPECIFIED	UNSPECIFIED
Ducrot, Elsa	Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 17, Bat. B5C, 4000 Liège, Belgium	UNSPECIFIED	UNSPECIFIED
Burdanov, Artem	Space sciences, Technologies and Astrophysics Research (STAR) Institute, Universite de Liege, Liege, Belgium	UNSPECIFIED	UNSPECIFIED
Acton, Jack S	School of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK	UNSPECIFIED	UNSPECIFIED
Alves, Douglas R.	Departamento de Astronomía, Universidad de Chile, Casilla 36-D Santiago, Chile	UNSPECIFIED	UNSPECIFIED
Anderson, David R	Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
Armstrong, David J	Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
Awiphan, Supachai	National Astronomical Research Institute of Thailand, 260 Moo 4, Donkaew, Mae Rim, Chiang Mai 50180, Thailand	UNSPECIFIED	UNSPECIFIED
Cooke, Benjamin F	Dept. of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
Burleigh, Matthew R	School of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK	UNSPECIFIED	UNSPECIFIED
Casewell, Sarah L	School of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK	UNSPECIFIED	UNSPECIFIED
Delrez, Laetitia	Astrobiology Research Unit, Université de Liège, Allée du 6 Août 19C, B-4000 Liège, Belgium; Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, 19C Allèe du 6 Août, B-4000 Liège, Belgium; Observatoire Astronomiqu	UNSPECIFIED	UNSPECIFIED
Demory, Brice-Olivier	University of Bern, Center for Space and Habitability, Gesellschaftsstrasse 6, CH-3012 Bern, Switzerland	UNSPECIFIED	UNSPECIFIED
Eigmüller, Philipp	UNSPECIFIED	https://orcid.org/0000-0003-4096-0594	UNSPECIFIED
Fukui, Akihiko	Subaru Telescope Okayama Branch Office, National Astronomical Observatory of Japan, NINS, 3037-5 Honjo, Kamogata, Asakuchi, Okayama 719-0232, Japan ; Instituto de Astrofísica de Canarias, C/ Vía Láctea, s/n, 38205 La Laguna, Spain	UNSPECIFIED	UNSPECIFIED
Gan, Tianjun	Department of Astronomy and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing, China	UNSPECIFIED	UNSPECIFIED
Gill, Samuel	Centre for Exoplanets and Habitability, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, UK Dept. of Physics, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
Gillon, Michael	Institut d'Astrophysique et de Géophysique, Université de Liège, Liège, Belgium	UNSPECIFIED	UNSPECIFIED
Goad, Michael R	School of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK	UNSPECIFIED	UNSPECIFIED
Tan, Thiam-Guan	Perth Exoplanet Survey Telescope, Perth, Western Australia, Australia	UNSPECIFIED	UNSPECIFIED
Gunther, Maximilian N.	Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
Hardee, Bronwen	Department of Earth and Planetary Sciences, University of California, Santa Cruz, CA 95064, USA	UNSPECIFIED	UNSPECIFIED
Henderson, Beth	School of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK	UNSPECIFIED	UNSPECIFIED
Jehin, Emmanuel	Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 17, Bat. B5C, 4000 Liège, Belgium	UNSPECIFIED	UNSPECIFIED
Jenkins, James S	Departamento de Astronomía, Universidad de Chile, Camino el Observatorio 1515, Las Condes, Casilla 36-D, 7591245, Santiago, Chile	UNSPECIFIED	UNSPECIFIED
Kosiarek, Molly	Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA	UNSPECIFIED	UNSPECIFIED
Lendl, Monika	Observatoire de Genève, Université de Genève, Chemin des Maillettes 51, 1290 Sauverny, Switzerland	UNSPECIFIED	UNSPECIFIED
Moyano, Maximiliano	Instituto de Astronomía, Universidad Católica del Norte , Angamos 0610, 1270709 Antofagasta, Chile	UNSPECIFIED	UNSPECIFIED
Murray, Catriona	Instituto de Astronomía, Angamos 0610, D-1272709, Antofagasta, Chile	UNSPECIFIED	UNSPECIFIED
Narita, Norio	Astrobiology Center, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181–8588, Japan	UNSPECIFIED	UNSPECIFIED
Niraula, Prajwal	Astronomy Department and Van Vleck Observatory, Wesleyan University, Middletown, CT 06459, USA	UNSPECIFIED	UNSPECIFIED
Odden, Caroline	Phillips Academy Observatory, Phillips Academy, Andover, MA 01810, USA	UNSPECIFIED	UNSPECIFIED
Palle, Enric	Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E-38205 La Laguna, Spain	UNSPECIFIED	UNSPECIFIED
Parviainen, Hannu	University of Helsinki	UNSPECIFIED	UNSPECIFIED
Pedersen, Peter P	Astrophysics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UK	UNSPECIFIED	UNSPECIFIED
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	UNSPECIFIED	UNSPECIFIED
V Rackham, Benjamin	Department of Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA	UNSPECIFIED	UNSPECIFIED
Sebastian, Daniel	School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK	UNSPECIFIED	UNSPECIFIED
Stockdale, Chris	Hazelwood Observatory, Hazelwood, Australia	UNSPECIFIED	UNSPECIFIED
Tilbrook, Rosanna	Department of Physics and Astronomy, University of Leicester , University Road, Leicester LE1 7RH, UK	UNSPECIFIED	UNSPECIFIED
Thompson, Samantha J.	Astrophysics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UK	UNSPECIFIED	UNSPECIFIED
Triaud, Amaury	School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK	UNSPECIFIED	UNSPECIFIED
Udry, Stephane	Observatoire Astronomique de l'Université de Genève, 51 Ch. des Maillettes, CH-1290 Versoix, Switzerland	UNSPECIFIED	UNSPECIFIED
Vines, Jose I	Departamento de Astronomia, Universidad de Chile, Casilla 36-D, Santiago, Chile	UNSPECIFIED	UNSPECIFIED
West, Richard G	Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
de Wit, Julien	Department of Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA	UNSPECIFIED	UNSPECIFIED

Date:

June 2021

Journal or Publication Title:

Monthly Notices of the Royal Astronomical Society: Letters

Refereed publication:

Yes

Open Access:

Yes

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Volume:

504

DOI:

10.1093/mnrasl/slab037

Page Range:

L45-L50

Publisher:

Oxford University Press

ISSN:

1745-3925

Status:

Published

Keywords:

techniques: photometric; planets and satellites: detection; planets and satellites: individual: HIP 41378 f; stars: individual: HIP 41378; Astrophysics - Earth and Planetary Astrophysics

HGF - Research field:

Aeronautics, Space and Transport

HGF - Program:

Space

HGF - Program Themes:

Space Exploration

DLR - Research area:

Raumfahrt

DLR - Program:

R EW - Space Exploration

DLR - Research theme (Project):

R - Project PLATO - PMC and Science

Location:

Berlin-Adlershof

Institutes and Institutions:

Institute of Planetary Research > Extrasolar Planets and Atmospheres

Deposited By:

Eigmüller, Dr. Philipp

Deposited On:

21 May 2021 07:26

Last Modified:

28 Jun 2023 13:52

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