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dc.contributor.author
Osborn, Ares
dc.contributor.author
Armstrong, David J
dc.contributor.author
Cale, Bryson
dc.contributor.author
Brahm, Rafael
dc.contributor.author
Wittenmyer, Robert A
dc.contributor.author
Dai, Fei
dc.contributor.author
Crossfield, Ian J. M
dc.contributor.author
Bryant, Edward M
dc.contributor.author
Adibekyan, Vardan
dc.contributor.author
Cloutier, Ryan
dc.contributor.author
Collins, Karen A
dc.contributor.author
Delgado Mena, E.
dc.contributor.author
Fridlund, Malcolm
dc.contributor.author
Hellier, Coel
dc.contributor.author
Howell, Steve B
dc.contributor.author
King, George W
dc.contributor.author
Lillo Box, Jorge
dc.contributor.author
Otegi, Jon
dc.contributor.author
Sousa, S.
dc.contributor.author
Stassun, Keivan G
dc.contributor.author
Matthews, Elisabeth C
dc.contributor.author
Ziegler, Carl
dc.contributor.author
Ricker, George
dc.contributor.author
Vanderspek, Roland
dc.contributor.author
Latham, David W
dc.contributor.author
Seager, S.
dc.contributor.author
Winn, Joshua N.
dc.contributor.author
Jenkins, Jon M
dc.contributor.author
Acton, Jack S
dc.contributor.author
Addison, Brett C
dc.contributor.author
Diaz, Rodrigo Fernando
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dc.date.available
2023-09-20T18:30:54Z
dc.date.issued
2021-10
dc.identifier.citation
Osborn, Ares; Armstrong, David J; Cale, Bryson; Brahm, Rafael; Wittenmyer, Robert A; et al.; TOI-431/HIP 26013: A super-Earth and a sub-Neptune transiting a bright, early K dwarf, with a third RV planet; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 507; 2; 10-2021; 2782-2803
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/212405
dc.description.abstract
We present the bright (Vmag = 9.12), multiplanet system TOI-431, characterized with photometry and radial velocities (RVs). We estimate the stellar rotation period to be 30.5 ± 0.7 d using archival photometry and RVs. Transiting Exoplanet Survey Satellite (TESS) objects of Interest (TOI)-431 b is a super-Earth with a period of 0.49 d, a radius of 1.28 ± 0.04 R, a mass of 3.07 ± 0.35 M, and a density of 8.0 ± 1.0 g cm-3; TOI-431 d is a sub-Neptune with a period of 12.46 d, a radius of 3.29 ± 0.09 R, a mass of 9.90+1.53-1.49 M, and a density of 1.36 ± 0.25 g cm-3. We find a third planet, TOI-431 c, in the High Accuracy Radial velocity Planet Searcher RV data, but it is not seen to transit in the TESS light curves. It has an Msin i of 2.83+0.41-0.34 M, and a period of 4.85 d. TOI-431 d likely has an extended atmosphere and is one of the most well-suited TESS discoveries for atmospheric characterization, while the super-Earth TOI-431 b may be a stripped core. These planets straddle the radius gap, presenting an interesting case-study for atmospheric evolution, and TOI-431 b is a prime TESS discovery for the study of rocky planet phase curves.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
PLANETS AND SATELLITES: DETECTION
dc.subject
PLANETS AND SATELLITES: FUNDAMENTAL PARAMETERS
dc.subject
PLANETS AND SATELLITES: INDIVIDUAL: (TOI-431, TIC 31374837)
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
TOI-431/HIP 26013: A super-Earth and a sub-Neptune transiting a bright, early K dwarf, with a third RV planet
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-09-18T13:36:13Z
dc.journal.volume
507
dc.journal.number
2
dc.journal.pagination
2782-2803
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Osborn, Ares. University of Warwick; Reino Unido
dc.description.fil
Fil: Armstrong, David J. University of Warwick; Reino Unido
dc.description.fil
Fil: Cale, Bryson. George Mason University; Estados Unidos
dc.description.fil
Fil: Brahm, Rafael. Universidad Adolfo Ibañez; Chile. Instituto de Astrofísica; Chile
dc.description.fil
Fil: Wittenmyer, Robert A. University Of Southern Queensland; Australia
dc.description.fil
Fil: Dai, Fei. Division Of Geological And Planetary Sciences; Estados Unidos
dc.description.fil
Fil: Crossfield, Ian J. M. University of Kansas; Estados Unidos
dc.description.fil
Fil: Bryant, Edward M. University of Warwick; Reino Unido
dc.description.fil
Fil: Adibekyan, Vardan. Universidad de Porto; Portugal
dc.description.fil
Fil: Cloutier, Ryan. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
dc.description.fil
Fil: Collins, Karen A. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
dc.description.fil
Fil: Delgado Mena, E.. Universidad de Porto; Portugal
dc.description.fil
Fil: Fridlund, Malcolm. Leiden University; Países Bajos. Chalmers University of Technology; Suecia
dc.description.fil
Fil: Hellier, Coel. Keele University; Reino Unido
dc.description.fil
Fil: Howell, Steve B. NASA Ames Research Center; Estados Unidos
dc.description.fil
Fil: King, George W. University of Warwick; Reino Unido
dc.description.fil
Fil: Lillo Box, Jorge. Consejo Superior de Investigaciones Científicas. Centro de Astrobiología; España
dc.description.fil
Fil: Otegi, Jon. Universidad de Ginebra; Suiza. Universitat Zurich; Suiza
dc.description.fil
Fil: Sousa, S.. Universidad de Porto; Portugal
dc.description.fil
Fil: Stassun, Keivan G. Vanderbilt University; Estados Unidos
dc.description.fil
Fil: Matthews, Elisabeth C. Universidad de Ginebra; Suiza. Massachusetts Institute of Technology; Estados Unidos
dc.description.fil
Fil: Ziegler, Carl. University of Toronto; Canadá
dc.description.fil
Fil: Ricker, George. Massachusetts Institute of Technology; Estados Unidos
dc.description.fil
Fil: Vanderspek, Roland. Massachusetts Institute of Technology; Estados Unidos
dc.description.fil
Fil: Latham, David W. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
dc.description.fil
Fil: Seager, S.. Massachusetts Institute of Technology; Estados Unidos
dc.description.fil
Fil: Winn, Joshua N.. University of Princeton; Estados Unidos
dc.description.fil
Fil: Jenkins, Jon M. NASA Ames Research Center; Estados Unidos
dc.description.fil
Fil: Acton, Jack S. University of Leicester; Reino Unido
dc.description.fil
Fil: Addison, Brett C. University Of Southern Queensland; Australia
dc.description.fil
Fil: Diaz, Rodrigo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Físicas. - Universidad Nacional de San Martín. Instituto de Ciencias Físicas; Argentina
dc.journal.title
Monthly Notices of the Royal Astronomical Society
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stab2313
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/507/2/2782/6348103
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