Search: id:"swepub:oai:research.chalmers.se:c26a5b4e-273f-4b63-aef0-6a1cf0e96f70" >
TOI-544 b: a potent...
TOI-544 b: a potential water-world inside the radius valley in a two-planet system
-
- Osborne, H. L.M. (author)
- European Southern Observatory (ESO),University College London (UCL),European Southern Observatory,University College London
-
- Van Eylen, Vincent (author)
- University College London (UCL),University College London
-
- Goffo, E. (author)
- Thüringer Landessternwarte Tautenburg,Universita degli Studi di Torino,University of Turin,Thuringer Landessternwarte Tautenburg
-
show more...
-
- Gandolfi, D. (author)
- Universita degli Studi di Torino,University of Turin
-
- Nowak, G. (author)
- Universidad de la Laguna,University of La Laguna,Uniwersytet Mikolaja Kopernika w Toruniu,Nicolaus Copernicus University,Instituto de Astrofísica de Canarias,University of La Laguna (ULL)
-
- Persson, Carina, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Onsala Space Observatory
-
- Livingston, J.H. (author)
- National Institutes of Natural Sciences (NINS),National Astronomical Observatory of Japan,The Graduate University for Advanced Studies (SOKENDAI),National Institutes of Natural Sciences - AstroBiology Center,Graduate University for Advanced Studies
-
- Weeks, A. (author)
- University College London (UCL),University College London
-
- Palle, Enric (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias,University of La Laguna (ULL)
-
- Luque, R. (author)
- University of Chicago
-
- Hellier, Coel (author)
- Keele University
-
- Carleo, Ilaria (author)
- Instituto de Astrofísica de Canarias
-
- Redfield, S. (author)
- Wesleyan University
-
- Hirano, T. (author)
- National Institutes of Natural Sciences (NINS),National Astronomical Observatory of Japan,The Graduate University for Advanced Studies (SOKENDAI),Graduate University for Advanced Studies,National Institutes of Natural Sciences - AstroBiology Center
-
- Gili, M. Garbaccio (author)
- Universita degli Studi di Torino,University of Turin
-
- Alarcon, Javier (author)
- European Southern Observatory Santiago
-
- Barragán, O. (author)
- University Of Oxford,University of Oxford
-
- Casasayas-Barris, Núria (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias,University of La Laguna (ULL)
-
- Díaz, Matías R. (author)
- Las Campanas Observatory
-
- Esposito, M. (author)
- Thüringer Landessternwarte Tautenburg,Thuringer Landessternwarte Tautenburg
-
- Knudstrup, E. (author)
- Århus Universitet,Aarhus University
-
- Jenkins, James S. (author)
- Centro de Astrofísica y Tecnologías Afines (CATA),,Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA),CSIC Instituto de Astrofísica de Andalucía (IAA)
-
- Murgas, F. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna,University of La Laguna (ULL),Onsala Space Observatory,Leiden University
-
- Orell-Miquel, J. (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias,University of La Laguna (ULL)
-
- Rodler, F. (author)
- European Southern Observatory Santiago
-
- Serrano, L. M. (author)
- Universita degli Studi di Torino,University of Turin
-
- Stangret, M. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna,University of La Laguna (ULL)
-
- Albrecht, S. H. (author)
- Århus Universitet,Aarhus University
-
- Alqasim, A. (author)
- University College London (UCL),University College London,Thuringer Landessternwarte Tautenburg
-
- Cochran, William D. (author)
- The University of Texas at Austin, USA,University of Texas at Austin
-
- Deeg, H. (author)
- Universidad Diego Portales,Diego Portales University,University of Chicago
-
- Fridlund, Malcolm, 1952 (author)
- Universiteit Leiden (UL),Leiden University (UL),Chalmers tekniska högskola,Chalmers University of Technology
-
- Hatzes, A. (author)
- Thüringer Landessternwarte Tautenburg
-
- Korth, J. (author)
- Lund University,Lunds universitet,Astrofysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Astrophysics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
-
- Lam, K. W.F. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),German Aerospace Center (DLR)
-
show less...
-
(creator_code:org_t)
- 2024
- 2024
- English.
-
In: Monthly Notices of the Royal Astronomical Society. - 0035-8711 .- 1365-2966. ; 527:4, s. 11138-11157
- Related links:
-
https://research.cha... (primary) (free)
-
show more...
-
http://dx.doi.org/10... (free)
-
https://doi.org/10.1...
-
https://research.cha...
-
https://lup.lub.lu.s...
-
show less...
Abstract
Subject headings
Close
- We report on the precise radial velocity follow-up of TOI-544 (HD 290498),ã bright K star ( V = 10.8), which hostsã small transiting planet recently disco v ered by the Trãnsiting Exoplanet Survey Satellite (TESS) . We collected 122 high-resolution High Accuracy Radial velocity Planet Searcher (HARPS)ãnd HARPS-N spectra to spectroscopically confirm the transiting planetãnd measure its mass. The nearly 3-yr baseline of our follow-upãllowed us to unveil the presence ofãnãdditional, non-transiting, longer-period companion planet. We derivedã radiusãnd mass for the inner planet, TOI-544 b, of 2.018 ±0.076 R⊙and 2.89 ±0.48 M⊙, respectively, which givesã bulk density of 1 . 93 + 0 . 30 -0 . 25 g cm -3 . TOI-544 c hasã minimum mass of 21.5 ±2.0 M⊙and orbital period of 50.1 ±0.2 d. The low density of planet-b implies that it has eitherãn Earth-like rocky core withã hydrogenãtmosphere, orã composition which harboursã significant fraction of water. The composition interpretation is degenerate depending on the specific choice of planet interior models used. Additionally, TOI-544 b hasãn orbital period of 1.55 dãnd equilibrium temperature of 999 ±14 K, placing it within the predicted location of the radius valley, where few planetsãre expected. TOI-544 b isã top target for futureãtmospheric observations, for example with JWST , which would enable better constraints of the planet composition.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- techniques: radial velocities
- planetsãnd satellites: detection
- planetsãnd satellites: composition
- planetsãnd satellites: composition
- planetsãnd satellites: detection
- techniques: radial velocities
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Osborne, H. L.M.
-
Van Eylen, Vince ...
-
Goffo, E.
-
Gandolfi, D.
-
Nowak, G.
-
Persson, Carina, ...
-
show more...
-
Livingston, J.H.
-
Weeks, A.
-
Palle, Enric
-
Luque, R.
-
Hellier, Coel
-
Carleo, Ilaria
-
Redfield, S.
-
Hirano, T.
-
Gili, M. Garbacc ...
-
Alarcon, Javier
-
Barragán, O.
-
Casasayas-Barris ...
-
Díaz, Matías R.
-
Esposito, M.
-
Knudstrup, E.
-
Jenkins, James S ...
-
Murgas, F.
-
Orell-Miquel, J.
-
Rodler, F.
-
Serrano, L. M.
-
Stangret, M.
-
Albrecht, S. H.
-
Alqasim, A.
-
Cochran, William ...
-
Deeg, H.
-
Fridlund, Malcol ...
-
Hatzes, A.
-
Korth, J.
-
Lam, K. W.F.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
- Articles in the publication
-
Monthly Notices ...
- By the university
-
Chalmers University of Technology
-
Lund University