The TESS-Keck Survey. XI. Mass Measurements for Four Transiting Sub-Neptunes Orbiting K Dwarf TOI-1246

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MARC

Turtelboom,University of California at Berkeley (author)

The TESS-Keck Survey. XI. Mass Measurements for Four Transiting Sub-Neptunes Orbiting K Dwarf TOI-1246

Article/chapterEnglish2022

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2022-05-25
American Astronomical Society,2022
electronicrdacarrier

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LIBRIS-ID:oai:research.chalmers.se:26fd897c-c96e-4510-b3b5-cef462283c16
https://doi.org/10.3847/1538-3881/ac69e5DOI
https://research.chalmers.se/publication/530754URI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype
Subject category:ref swepub-contenttype

Notes

Multiplanet systems are valuable arenas for investigating exoplanet architectures and comparing planetary siblings. TOI-1246 is one such system, with a moderately bright K dwarf (V = 11.6, K = 9.9) and four transiting sub-Neptunes identified by TESS with orbital periods of 4.31, 5.90, 18.66, and 37.92 days. We collected 130 radial velocity observations with Keck/HIRES and TNG/HARPS-N to measure planet masses. We refit the 14 sectors of TESS photometry to refine planet radii (2.97 +/- 0.06 R (circle plus), 2.47 +/- 0.08 R (circle plus), 3.46 +/- 0.09 R (circle plus), and 3.72 +/- 0.16 R (circle plus)) and confirm the four planets. We find that TOI-1246 e is substantially more massive than the three inner planets (8.1 +/- 1.1 M (circle plus), 8.8 +/- 1.2 M (circle plus), 5.3 +/- 1.7 M (circle plus), and 14.8 +/- 2.3 M (circle plus)). The two outer planets, TOI-1246 d and TOI-1246 e, lie near to the 2:1 resonance (P (e)/P ( d ) = 2.03) and exhibit transit-timing variations. TOI-1246 is one of the brightest four-planet systems, making it amenable for continued observations. It is one of only five systems with measured masses and radii for all four transiting planets. The planet densities range from 0.70 +/- 0.24 to 3.21 +/- 0.44 g cm(-3), implying a range of bulk and atmospheric compositions. We also report a fifth planet candidate found in the RV data with a minimum mass of 25.6 +/- 3.6 M (circle plus). This planet candidate is exterior to TOI-1246 e, with a candidate period of 93.8 days, and we discuss the implications if it is confirmed to be planetary in nature.

Subject headings and genre

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 Fysik Den kondenserade materiens fysik hsv//swe
NATURAL SCIENCES Physical Sciences Condensed Matter Physics hsv//eng

Added entries (persons, corporate bodies, meetings, titles ...)

Weiss, Lauren M.University of Notre Dame (author)
Dressing, Courtney D.University of California at Berkeley (author)
Nowak, GrzegorzInstituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna (author)
Palle, EnricInstituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna (author)
Beard, CoreyUniversity of California at Irvine (UCI) (author)
Blunt, SarahCalifornia Institute of Technology (Caltech) (author)
Brinkman, CaseyUniversity of Hawaii (author)
Chontos, AshleyUniversity of Hawaii (author)
Claytor, Zachary R.University of Hawaii (author)
Dai, FeiCalifornia Institute of Technology (Caltech) (author)
Dalba, Paul A. (author)
Giacalone, StevenUniversity of California at Berkeley (author)
Gonzales, Erica (author)
Harada, Caleb K.University of California at Berkeley (author)
Hill, Michelle L. (author)
Holcomb, RaeUniversity of California at Irvine (UCI) (author)
Korth, Judith,1987Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)korth (author)
Lubin, JackUniversity of California at Irvine (UCI) (author)
Masseron, ThomasInstituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna (author)
MacDougall, MasonUniversity of California at Los Angeles (UCLA) (author)
Mayo, Andrew W.Köpenhamns universitet,University of Copenhagen,University of California at Berkeley (author)
Mocnik, Teo (author)
Murphy, Joseph M. Akana (author)
Polanski, Alex S.University of Kansas (author)
Rice, MalenaYale University (author)
Rubenzahl, Ryan A.California Institute of Technology (Caltech) (author)
Scarsdale, Nicholas (author)
Stassun, Keivan G.Vanderbilt University (author)
Tyler, Dakotah B.University of California at Los Angeles (UCLA) (author)
Van Zandt, JudahUniversity of California at Los Angeles (UCLA) (author)
Crossfield, Ian J. M.University of Kansas (author)
Deeg, Hans J.Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna (author)
Fulton, BenjaminCalifornia Institute of Technology (Caltech) (author)
Gandolfi, DavideUniversita degli Studi di Torino,University of Turin (author)
Howard, Andrew W.California Institute of Technology (Caltech) (author)
Huber, DanUniversity of Hawaii (author)
Isaacson, HowardUniversity of California at Berkeley,University of Southern Queensland (author)
Kane, Stephen R. (author)
Lam, Kristine W. F.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Luque, RafaelInstituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
Martin, Eduardo L.Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council,Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias (author)
Morello, GiuseppeInstituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna (author)
Orell-Miquel, JaumeUniversidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias (author)
Petigura, Erik A.University of California at Los Angeles (UCLA) (author)
Robertson, PaulUniversity of California at Irvine (UCI) (author)
Roy, ArpitaJohns Hopkins University,Space Telescope Science Institute (STScI) (author)
Van Eylen, VincentUniversity College London (UCL) (author)
Baker, David (author)
Belinski, Alexander A.M. V. Lomonosov Moscow State University (author)
Bieryla, AllysonHarvard-Smithsonian Center for Astrophysics (author)
Ciardi, David R.California Institute of Technology (Caltech) (author)
Collins, Karen A.Harvard-Smithsonian Center for Astrophysics (author)
Cutting, Neil (author)
Della-Rose, Devin J.United States Air Force Academy (author)
Ellingsen, Taylor B.George Mason University (author)
Furlan, E.California Institute of Technology (Caltech) (author)
Gan, TianjunTsinghua University (author)
Gnilka, Crystal L.NASA Ames Research Center,California Institute of Technology (Caltech) (author)
Guerra, Pere (author)
Howell, Steve B.NASA Ames Research Center (author)
Jimenez, MaryGeorge Mason University (author)
Latham, David W.Harvard-Smithsonian Center for Astrophysics (author)
Lariviere, MaudeUniversité de Montréal,McGill University (author)
Lester,NASA Ames Research Center (author)
Lillo-Box, JorgeCentro de Astrobiologia (CAB) (author)
Luker, Lindy (author)
Mann, Christopher R.Université de Montréal (author)
Plavchan, Peter P.George Mason University (author)
Safonov, BorisM. V. Lomonosov Moscow State University (author)
Skinner, Brett (author)
Strakhov, Ivan A.M. V. Lomonosov Moscow State University (author)
Wittrock, Justin M.George Mason University (author)
Caldwell, Douglas A.SETI Institute (author)
Essack, ZahraMassachusetts Institute of Technology (MIT) (author)
Jenkins, Jon M.NASA Ames Research Center (author)
Quintana,NASA Goddard Space Flight Center (author)
Ricker, George R.Massachusetts Institute of Technology (MIT) (author)
Vanderspek, RolandMassachusetts Institute of Technology (MIT) (author)
Seager, S.Massachusetts Institute of Technology (MIT) (author)
Winn, Joshua N.Princeton University (author)
University of California at BerkeleyUniversity of Notre Dame (creator_code:org_t)

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By the author/editor: Turtelboom,; Weiss, Lauren M.; Dressing, Courtn ...; Nowak, Grzegorz; Palle, Enric; Beard, Corey; show more...; Blunt, Sarah; Brinkman, Casey; Chontos, Ashley; Claytor, Zachary ...; Dai, Fei; Dalba, Paul A.; Giacalone, Steve ...; Gonzales, Erica; Harada, Caleb K.; Hill, Michelle L ...; Holcomb, Rae; Korth, Judith, 1 ...; Lubin, Jack; Masseron, Thomas; MacDougall, Maso ...; Mayo, Andrew W.; Mocnik, Teo; Murphy, Joseph M ...; Polanski, Alex S ...; Rice, Malena; Rubenzahl, Ryan ...; Scarsdale, Nicho ...; Stassun, Keivan ...; Tyler, Dakotah B ...; Van Zandt, Judah; Crossfield, Ian ...; Deeg, Hans J.; Fulton, Benjamin; Gandolfi, Davide; Howard, Andrew W ...; Huber, Dan; Isaacson, Howard; Kane, Stephen R.; Lam, Kristine W. ...; Luque, Rafael; Martin, Eduardo ...; Morello, Giusepp ...; Orell-Miquel, Ja ...; Petigura, Erik A ...; Robertson, Paul; Roy, Arpita; Van Eylen, Vince ...; Baker, David; Belinski, Alexan ...; Bieryla, Allyson; Ciardi, David R.; Collins, Karen A ...; Cutting, Neil; Della-Rose, Devi ...; Ellingsen, Taylo ...; Furlan, E.; Gan, Tianjun; Gnilka, Crystal ...; Guerra, Pere; Howell, Steve B.; Jimenez, Mary; Latham, David W.; Lariviere, Maude; Lester,; Lillo-Box, Jorge; Luker, Lindy; Mann, Christophe ...; Plavchan, Peter ...; Safonov, Boris; Skinner, Brett; Strakhov, Ivan A ...; Wittrock, Justin ...; Caldwell, Dougla ...; Essack, Zahra; Jenkins, Jon M.; Quintana,; Ricker, George R ...; Vanderspek, Rola ...; Seager, S.; Winn, Joshua N.; show less...

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