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The Discovery and F...
The Discovery and Follow-up of Four Transiting Short-period Sub-Neptunes Orbiting M Dwarfs
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- Hori, Yasunori (author)
- National Institutes of Natural Sciences (NINS)
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- Fukui, A. (author)
- University of Tokyo, Japan
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- Hirano, T. (author)
- National Institutes of Natural Sciences (NINS)
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show more...
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- Narita, Norio (author)
- National Institutes of Natural Sciences (NINS)
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- De Leon, Jerome P. (author)
- University of Tokyo, Japan
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- Ishikawa, Hiroyuki Tako (author)
- Western University
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- Hartman, Joel D. (author)
- Princeton University
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- Morello, Giuseppe (author)
- Instituto de Astrofísica de Canarias
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- Garcia, N. Abreu (author)
- Instituto de Astrofísica de Canarias
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- Hernández, Leticia Álvarez (author)
- Instituto de Astrofísica de Canarias
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- Bejar, V. J. S. (author)
- Instituto de Astrofísica de Canarias
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- Calatayud-Borras, Yéssica (author)
- Instituto de Astrofísica de Canarias
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- Carleo, Ilaria (author)
- Instituto de Astrofísica de Canarias
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- Enoc, Gareb (author)
- Instituto de Astrofísica de Canarias
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- Esparza-Borges, E. (author)
- Instituto de Astrofísica de Canarias
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- Fukuda, Izuru (author)
- University of Tokyo, Japan
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- Galán, D. (author)
- Instituto de Astrofísica de Canarias
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- Geraldía-González, S. (author)
- Instituto de Astrofísica de Canarias
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- Hayashi, Y. (author)
- University of Tokyo, Japan
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- Ikoma, Masahiro (author)
- National Astronomical Observatory of Japan
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- Ikuta, Kai (author)
- University of Tokyo, Japan
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- Isogai, Keisuke (author)
- University of Tokyo, Japan
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- Kagetani, T. (author)
- University of Tokyo, Japan
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- Kawai, Yugo (author)
- University of Tokyo, Japan
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Kawauchi, Kiyoe (author)
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- Kimura, Tadahiro (author)
- National Astronomical Observatory of Japan
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- Kodama, T. (author)
- Tokyo Institute of Technology
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- Korth, Judith, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Kusakabe, Nobuhiko (author)
- National Institutes of Natural Sciences (NINS)
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- Laza-Ramos, A. (author)
- Universitat de Valencia
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- Livingston, J.H. (author)
- National Institutes of Natural Sciences (NINS)
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- Luque, R. (author)
- University of Chicago
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- Miyakawa, Kohei (author)
- National Astronomical Observatory of Japan
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- Mori, Mayuko (author)
- National Institutes of Natural Sciences (NINS)
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- Murgas, F. (author)
- Instituto de Astrofísica de Canarias
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- Orell-Miquel, J. (author)
- Instituto de Astrofísica de Canarias
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- Palle, Enric (author)
- Instituto de Astrofísica de Canarias
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- Parviainen, H. (author)
- Instituto de Astrofísica de Canarias
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- Peláez-Torres, A. (author)
- Instituto de Astrofísica de Canarias
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- Puig-Subirà, M. (author)
- Instituto de Astrofísica de Canarias
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- Sánchez-Benavente, M. (author)
- Instituto de Astrofísica de Canarias
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- Sosa-Guillén, Paula (author)
- Instituto de Astrofísica de Canarias
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- Stangret, M. (author)
- Istituto nazionale di astrofisica (INAF)
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- Terada, Y. (author)
- Academia Sinica Taiwan
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- Muñoz Torres, Sara (author)
- Instituto de Astrofísica de Canarias
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- Watanabe, Noriharu (author)
- University of Tokyo, Japan
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- Bakos, Gaspar Á. (author)
- Princeton University
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- Barkaoui, Khalid (author)
- Instituto de Astrofísica de Canarias
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- Beichman, C. (author)
- National Aeronautics and Space Administration (NASA)
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Benkhaldoun, Z. (author)
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- Boyle, A. W. (author)
- California Institute of Technology (Caltech)
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- Ciardi, D. R. (author)
- California Institute of Technology (Caltech)
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- Clark, Catherine A. (author)
- National Aeronautics and Space Administration (NASA)
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- Collins, Karen A. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Collins, Kevin I. (author)
- George Mason University
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Conti, D. (author)
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- Crossfield, I. J.M. (author)
- University of Kansas
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Everett, M.E. (author)
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- Furlan, Elise (author)
- National Aeronautics and Space Administration (NASA)
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- Ghachoui, M. (author)
- Universite de Liège,University of Liège
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- Gillon, Michaël (author)
- Universite de Liège,University of Liège
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Gonzales, Erica J. (author)
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Higuera, Jesus (author)
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Horne, Keith (author)
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- Howell, S.B. (author)
- NASA Ames Research Center
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- Jehin, Emmanuel (author)
- Universite de Liège,University of Liège
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- Lester, Kathryn V. (author)
- NASA Ames Research Center
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- Lund, M. B. (author)
- National Aeronautics and Space Administration (NASA)
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Matson, Rachel A. (author)
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- Matthews, Elisabeth (author)
- Max-Planck-Institut für Astronomie,Max Planck Institute for Astronomy
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- Pozuelos, Francisco J. (author)
- Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)
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- Safonov, B. S. (author)
- M. V. Lomonosov Moscow State University
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- Schlieder, Joshua E. (author)
- NASA Goddard Space Flight Center
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- Schwarz, R. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Sefako, Ramotholo (author)
- South African Astronomical Observatory
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Srdoc, G. (author)
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- Strakhov, I. A. (author)
- M. V. Lomonosov Moscow State University
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- Timmermans, M. (author)
- Universite de Liège,University of Liège
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- Waalkes, William C. (author)
- University of Colorado at Boulder
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- Ziegler, C. (author)
- Stephen F. Austin State University
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- Charbonneau, D. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Essack, Zahra (author)
- University of New Mexico
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- Guerrero, N. (author)
- Massachusetts Institute of Technology (MIT),University of Florida
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- Harakawa, Hiroki (author)
- National Astronomical Observatory of Japan
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- Hedges, Christina (author)
- NASA Goddard Space Flight Center
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- Ishizuka, Masato (author)
- University of Tokyo, Japan
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- Jenkins, Jon M. (author)
- NASA Ames Research Center
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- Konishi, Mihoko (author)
- Oita University
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- Kotani, Takayuki (author)
- National Institutes of Natural Sciences (NINS)
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- Kudo, T. (author)
- National Astronomical Observatory of Japan
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- Kurokawa, Takashi (author)
- National Astronomical Observatory of Japan
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- Kuzuhara, M. (author)
- National Institutes of Natural Sciences (NINS)
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- Nishikawa, Jun (author)
- National Institutes of Natural Sciences (NINS)
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- Omiya, Masashi (author)
- National Institutes of Natural Sciences (NINS)
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- Ricker, George R. (author)
- Massachusetts Institute of Technology (MIT)
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- Seager, S. (author)
- Massachusetts Institute of Technology (MIT)
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- Serizawa, Takuma (author)
- National Astronomical Observatory of Japan
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- Striegel, S. (author)
- SETI Institute
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- Tamura, Motohide (author)
- National Institutes of Natural Sciences (NINS)
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- Ueda, Akitoshi (author)
- National Institutes of Natural Sciences (NINS)
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- Vanderspek, Roland K. (author)
- Massachusetts Institute of Technology (MIT)
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- Vievard, Sébastien (author)
- National Astronomical Observatory of Japan
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- Winn, J. N. (author)
- Princeton University
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Astronomical Journal. - 1538-3881 .- 0004-6256. ; 167:6
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.3...
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Abstract
Subject headings
Close
- Sub-Neptunes with radii of 2-3 R ⊕ are intermediate in size between rocky planets and Neptune-sized planets. The orbital properties and bulk compositions of transiting sub-Neptunes provide clues to the formation and evolution of close-in small planets. In this paper, we present the discovery and follow-up of four sub-Neptunes orbiting M dwarfs (TOI-782, TOI-1448, TOI-2120, and TOI-2406), three of which were newly validated by ground-based follow-up observations and statistical analyses. TOI-782 b, TOI-1448 b, TOI-2120 b, and TOI-2406 b have radii of R p = 2.740 − 0.079 + 0.082 R ⊕ , 2.769 − 0.068 + 0.073 R ⊕ , 2.120 ± 0.067 R ⊕, and 2.830 − 0.066 + 0.068 R ⊕ and orbital periods of P = 8.02, 8.11, 5.80, and 3.08 days, respectively. Doppler monitoring with the Subaru/InfraRed Doppler instrument led to 2σ upper limits on the masses of <19.1 M ⊕, <19.5 M ⊕, <6.8 M ⊕, and <15.6 M ⊕ for TOI-782 b, TOI-1448 b, TOI-2120 b, and TOI-2406 b, respectively. The mass-radius relationship of these four sub-Neptunes testifies to the existence of volatile material in their interiors. These four sub-Neptunes, which are located above the so-called “radius valley,” are likely to retain a significant atmosphere and/or an icy mantle on the core, such as a water world. We find that at least three of the four sub-Neptunes (TOI-782 b, TOI-2120 b, and TOI-2406 b), orbiting M dwarfs older than 1 Gyr, are likely to have eccentricities of e ∼ 0.2-0.3. The fact that tidal circularization of their orbits is not achieved over 1 Gyr suggests inefficient tidal dissipation in their interiors.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Hori, Yasunori
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Fukui, A.
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Hirano, T.
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Narita, Norio
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De Leon, Jerome ...
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Ishikawa, Hiroyu ...
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show more...
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Hartman, Joel D.
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Morello, Giusepp ...
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Garcia, N. Abreu
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Hernández, Letic ...
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Bejar, V. J. S.
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Calatayud-Borras ...
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Carleo, Ilaria
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Enoc, Gareb
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Esparza-Borges, ...
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Fukuda, Izuru
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Galán, D.
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Geraldía-Gonzále ...
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Hayashi, Y.
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Ikoma, Masahiro
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Ikuta, Kai
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Isogai, Keisuke
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Kagetani, T.
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Kawai, Yugo
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Kawauchi, Kiyoe
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Kimura, Tadahiro
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Kodama, T.
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Korth, Judith, 1 ...
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Kusakabe, Nobuhi ...
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Laza-Ramos, A.
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Livingston, J.H.
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Luque, R.
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Miyakawa, Kohei
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Mori, Mayuko
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Murgas, F.
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Orell-Miquel, J.
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Palle, Enric
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Parviainen, H.
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Peláez-Torres, A ...
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Puig-Subirà, M.
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Sánchez-Benavent ...
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Sosa-Guillén, Pa ...
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Stangret, M.
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Terada, Y.
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Muñoz Torres, Sa ...
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Watanabe, Noriha ...
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Bakos, Gaspar Á.
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Barkaoui, Khalid
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Beichman, C.
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Benkhaldoun, Z.
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Boyle, A. W.
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Ciardi, D. R.
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Clark, Catherine ...
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Collins, Karen A ...
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Collins, Kevin I ...
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Conti, D.
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Crossfield, I. J ...
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Everett, M.E.
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Furlan, Elise
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Ghachoui, M.
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Gillon, Michaël
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Gonzales, Erica ...
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Higuera, Jesus
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Horne, Keith
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Howell, S.B.
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Jehin, Emmanuel
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Lester, Kathryn ...
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Lund, M. B.
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Matson, Rachel A ...
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Matthews, Elisab ...
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Pozuelos, Franci ...
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Safonov, B. S.
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Schlieder, Joshu ...
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Schwarz, R.
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Sefako, Ramothol ...
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Srdoc, G.
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Strakhov, I. A.
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Timmermans, M.
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Waalkes, William ...
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Ziegler, C.
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Charbonneau, D.
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Essack, Zahra
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Guerrero, N.
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Harakawa, Hiroki
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Hedges, Christin ...
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Ishizuka, Masato
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Jenkins, Jon M.
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Konishi, Mihoko
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Kotani, Takayuki
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Kudo, T.
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Kurokawa, Takash ...
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Kuzuhara, M.
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Nishikawa, Jun
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Omiya, Masashi
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Ricker, George R ...
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Seager, S.
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Serizawa, Takuma
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Striegel, S.
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Tamura, Motohide
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Ueda, Akitoshi
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Vanderspek, Rola ...
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Vievard, Sébasti ...
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Winn, J. N.
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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 Condensed Matter ...
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Astronomical Jou ...
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Chalmers University of Technology