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A puffy polar plane...
A puffy polar planet The low density, hot Jupiter TOI-640 b is on a polar orbit
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- Knudstrup, Emil (author)
- Århus Universitet,Aarhus University
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- Albrecht, Simon H. (author)
- Århus Universitet,Aarhus University
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- Gandolfi, Davide (author)
- Universita degli Studi di Torino,University of Turin
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- Marcussen, Marcus L. (author)
- Århus Universitet,Aarhus University
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- Goffo, Elisa (author)
- Universita degli Studi di Torino,University of Turin,Thüringer Landessternwarte Tautenburg
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- Serrano, Luisa M. (author)
- Universita degli Studi di Torino,University of Turin
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- Dai, Fei (author)
- California Institute of Technology (Caltech)
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- Redfield, Seth (author)
- Wesleyan University
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- Hirano, Teruyuki (author)
- National Astronomical Observatory of Japan,Astrobiology Center, Japan
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- Csizmadia, Szilard (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Cochran, William D. (author)
- The University of Texas at Austin, USA,The University of Texas at Austin, USA
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- Deeg, Hans J. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Fridlund, Malcolm, 1952 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lam, Kristine W. F. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Livingston, John H. (author)
- National Astronomical Observatory of Japan,The Graduate University for Advanced Studies (SOKENDAI),Astrobiology Center, Japan
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- Luque, Rafael (author)
- University of Chicago
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- Narita, Norio (author)
- University of Tokyo, Japan,Astrobiology Center, Japan,Instituto de Astrofísica de Canarias
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- Palle, Enric (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Persson, Carina, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Van Eylen, Vincent (author)
- University College London (UCL)
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(creator_code:org_t)
- 2023-03-24
- 2023
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 671
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https://doi.org/10.1...
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Abstract
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- TOI-640 b is a hot, puffy Jupiter with a mass of 0.57 +/- 0.02 M-J and radius of 1.72 +/- 0.05 R-J, orbiting a slightly evolved F-type star with a separation of 6.33(-0.06)(+0.07) R-star. Through spectroscopic in-transit observations made with the HARPS spectrograph, we measured the Rossiter-McLaughlin effect, analysing both in-transit radial velocities and the distortion of the stellar spectral lines. From these observations, we find the host star to have a projected obliquity of lambda = 184 +/- 3 degrees. From the TESS light curve, we measured the stellar rotation period, allowing us to determine the stellar inclination, i(star) = 23(-2)(+3 degrees), meaning we are viewing the star pole-on. Combining this with the orbital inclination allowed us to calculate the host star obliquity, psi = 104 +/- 2(degrees). TOI-640 b joins a group of planets orbiting over stellar poles within the range 80(degrees)-125 degrees. The origin of this orbital configuration is not well understood.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Teoretisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)
Keyword
- techniques: photometric
- planets and satellites:gaseous planets
- techniques: spectroscopic
- planet-star interactions
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Knudstrup, Emil
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Albrecht, Simon ...
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Gandolfi, Davide
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Marcussen, Marcu ...
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Goffo, Elisa
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Serrano, Luisa M ...
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show more...
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Dai, Fei
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Redfield, Seth
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Hirano, Teruyuki
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Csizmadia, Szila ...
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Cochran, William ...
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Deeg, Hans J.
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Fridlund, Malcol ...
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Lam, Kristine W. ...
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Livingston, John ...
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Luque, Rafael
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Narita, Norio
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Palle, Enric
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Persson, Carina, ...
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Van Eylen, Vince ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Theoretical Chem ...
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Astronomy and As ...
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Chalmers University of Technology