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TOI-332 b: a super ...
TOI-332 b: a super dense Neptune found deep within the Neptunian desert
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- Osborn, A. (author)
- The University of Warwick
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- Armstrong, D. J. (author)
- The University of Warwick
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- Fernández Fernández, Jorge (author)
- The University of Warwick
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show more...
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- Knierim, Henrik (author)
- Universität Zürich,University of Zürich
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- Adibekyan, V. (author)
- Universidade do Porto,University of Porto
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- Collins, Karen A. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Delgado Mena, E. (author)
- Universidade do Porto,University of Porto
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- Fridlund, Malcolm, 1952 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- da Silva, J. Gomes (author)
- Universidade do Porto,University of Porto
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- Hellier, Coel (author)
- Keele University
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- Jackson, David G. (author)
- Queen's University Belfast
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- King, George W (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),University of Michigan
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- Lillo-Box, J. (author)
- Centro de Astrobiologia (CAB)
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Matson, Rachel A. (author)
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- Matthews, Elisabeth (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Santos, N. C. (author)
- Universidade do Porto,University of Porto
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- Sousa, S.G. (author)
- Universidade do Porto,University of Porto
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- Stassun, Keivan G. (author)
- Vanderbilt University
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Tan, Thiam Guan (author)
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- Ricker, George R. (author)
- Massachusetts Institute of Technology (MIT)
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- Vanderspek, Roland K. (author)
- Massachusetts Institute of Technology (MIT)
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- Latham, D. W. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Seager, S. (author)
- Massachusetts Institute of Technology (MIT)
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- Winn, J. N. (author)
- Princeton University
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- Jenkins, Jon M. (author)
- NASA Ames Research Center
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- Bayliss, D. (author)
- The University of Warwick
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- Bouma, L. (author)
- California Institute of Technology (Caltech)
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- Ciardi, D. R. (author)
- National Aeronautics and Space Administration (NASA)
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- Collins, Kevin I. (author)
- George Mason University
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- Colón, K. D. (author)
- NASA Goddard Space Flight Center
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- Crossfield, I. J.M. (author)
- Massachusetts Institute of Technology (MIT)
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- Demangeon, O. (author)
- Universidade do Porto,University of Porto
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- Diaz, R. F. (author)
- Consejo Nacional de Investigaciones Cientificas y Tecnicas
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- Dorn, C. (author)
- Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH)
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- Dumusque, X. (author)
- Université de Genève,University of Geneva
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- Keniger, Marcelo Aron Fetzner (author)
- The University of Warwick
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- Figueira, P. (author)
- Université de Genève,University of Geneva,Universidade do Porto,University of Porto
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- Gan, Tianjun (author)
- Tsinghua University
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- Goeke, Robert (author)
- Massachusetts Institute of Technology (MIT)
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- Hadjigeorghiou, A. (author)
- The University of Warwick
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- Hawthorn, F. (author)
- The University of Warwick
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- Helled, R. (author)
- Universität Zürich,University of Zürich
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- Howell, S.B. (author)
- NASA Ames Research Center
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- Nielsen, L. D. (author)
- European Southern Observatory (ESO)
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- Osborn, H. P. (author)
- Universität Bern,University of Bern
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- Quinn, Samuel N. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Sefako, Ramotholo (author)
- South African Astronomical Observatory
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- Shporer, Avi (author)
- Massachusetts Institute of Technology (MIT)
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- Strøm, P. A. (author)
- The University of Warwick
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- Twicken, J. D. (author)
- NASA Ames Research Center,SETI Institute
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- Vanderburg, A. (author)
- Massachusetts Institute of Technology (MIT)
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- Wheatley, P. J. (author)
- The University of Warwick
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Monthly Notices of the Royal Astronomical Society. - 0035-8711 .- 1365-2966. ; 526:1, s. 548-566
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- To date, thousands of planets have been discovered, but there are regions of the orbital parameter space that are still bare. An example is the short period and intermediate mass/radius space known as the 'Neptunian desert', where planets should be easy to find but discoveries remain few. This suggests unusual formation and evolution processes are responsible for the planets residing here. We present the discovery of TOI-332 b, a planet with an ultra-short period of 0.78 d that sits firmly within the desert. It orbits a K0 dwarf with an effective temperature of 5251 ± 71 K. TOI-332 b has a radius of R, smaller than that of Neptune, but an unusually large mass of 57.2 ± 1.6 M. It has one of the highest densities of any Neptune-sized planet discovered thus far at g cm-3. A 4-layer internal structure model indicates it likely has a negligible hydrogen-helium envelope, something only found for a small handful of planets this massive, and so TOI-332 b presents an interesting challenge to planetary formation theories. We find that photoevaporation cannot account for the mass-loss required to strip this planet of the Jupiter-like envelope it would have been expected to accrete. We need to look towards other scenarios, such as high-eccentricity migration, giant impacts, or gap opening in the protoplanetary disc, to try and explain this unusual discovery.
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)
Keyword
- planets and satellites: detection
- planets and satellites: individual: (TOI-332, TIC 139285832)
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Osborn, A.
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Armstrong, D. J.
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Fernández Fernán ...
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Knierim, Henrik
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Adibekyan, V.
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Collins, Karen A ...
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show more...
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Delgado Mena, E.
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Fridlund, Malcol ...
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da Silva, J. Gom ...
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Hellier, Coel
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Jackson, David G ...
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King, George W
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Lillo-Box, J.
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Matson, Rachel A ...
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Matthews, Elisab ...
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Santos, N. C.
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Sousa, S.G.
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Stassun, Keivan ...
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Tan, Thiam Guan
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Ricker, George R ...
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Vanderspek, Rola ...
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Latham, D. W.
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Seager, S.
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Winn, J. N.
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Jenkins, Jon M.
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Bayliss, D.
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Bouma, L.
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Ciardi, D. R.
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Collins, Kevin I ...
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Colón, K. D.
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Crossfield, I. J ...
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Demangeon, O.
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Diaz, R. F.
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Dorn, C.
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Dumusque, X.
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Keniger, Marcelo ...
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Figueira, P.
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Gan, Tianjun
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Goeke, Robert
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Hadjigeorghiou, ...
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Hawthorn, F.
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Helled, R.
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Howell, S.B.
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Nielsen, L. D.
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Osborn, H. P.
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Quinn, Samuel N.
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Sefako, Ramothol ...
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Shporer, Avi
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Strøm, P. A.
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Twicken, J. D.
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Vanderburg, A.
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Wheatley, P. J.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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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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Monthly Notices ...
- By the university
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Chalmers University of Technology