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

Emma V. Turtelboom; Lauren M. Weiss; Courtney D. Dressing; Grzegorz Nowak; Enric Palle; Corey Beard; Sarah Blunt; Casey Brinkman; Ashley Chontos; Zachary R. Claytor; Fei Dai; Paul A. Dalba; Steven Giacalone; Erica Gonzales; Caleb K. Harada; Michelle L. Hill; Rae Holcomb; Judith Korth; Jack Lubin; Thomas Masseron; Mason Macdougall; Andrew W. Mayo; Teo Močnik; Joseph M. Akana Murphy; Alex S. Polanski; Malena Rice; Ryan A. Rubenzahl; Nicholas Scarsdale; Keivan G. Stassun; Dakotah B. Tyler; Judah Van Zandt; Ian J.M. Crossfield; Hans J. Deeg; Benjamin Fulton; Davide Gandolfi; Andrew W. Howard; Dan Huber; Howard Isaacson; Stephen R. Kane; Kristine W.F. Lam; Rafael Luque; Eduardo L. Martin; Giuseppe Morello; Jaume Orell-Miquel; Erik A. Petigura; Paul Robertson; Arpita Roy; Vincent Van Eylen; David Baker; Alexander A. Belinski; Allyson Bieryla; David R. Ciardi; Karen A. Collins; Neil Cutting; Devin J. Della-Rose; Taylor B. Ellingsen; E. Furlan; Tianjun Gan; Crystal L. Gnilka; Pere Guerra; Steve B. Howell; Mary Jimenez; David W. Latham; Maude Larivière; Kathryn V. Lester; Jorge Lillo-Box; Lindy Luker; Christopher R. Mann; Peter P. Plavchan; Boris Safonov; Brett Skinner; Ivan A. Strakhov; Justin M. Wittrock; Douglas A. Caldwell; Zahra Essack; Jon M. Jenkins; Elisa V. Quintana; George R. Ricker; Roland Vanderspek; S. Seager; Joshua N. Winn

doi:10.3847/1538-3881/ac69e5

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

Emma V. Turtelboom, Lauren M. Weiss, Courtney D. Dressing, Grzegorz Nowak, Enric Palle, Corey Beard, Sarah Blunt, Casey Brinkman, Ashley Chontos, Zachary R. Claytor, Fei Dai, Paul A. Dalba, Steven Giacalone, Erica Gonzales, Caleb K. Harada, Michelle L. Hill, Rae Holcomb, Judith Korth, Jack Lubin, Thomas MasseronMason Macdougall, Andrew W. Mayo, Teo Močnik, Joseph M. Akana Murphy, Alex S. Polanski, Malena Rice, Ryan A. Rubenzahl, Nicholas Scarsdale, Keivan G. Stassun, Dakotah B. Tyler, Judah Van Zandt, Ian J.M. Crossfield, Hans J. Deeg, Benjamin Fulton, Davide Gandolfi, Andrew W. Howard, Dan Huber, Howard Isaacson, Stephen R. Kane, Kristine W.F. Lam, Rafael Luque, Eduardo L. Martin, Giuseppe Morello, Jaume Orell-Miquel, Erik A. Petigura, Paul Robertson, Arpita Roy, Vincent Van Eylen, David Baker, Alexander A. Belinski, Allyson Bieryla, David R. Ciardi, Karen A. Collins, Neil Cutting, Devin J. Della-Rose, Taylor B. Ellingsen, E. Furlan, Tianjun Gan, Crystal L. Gnilka, Pere Guerra, Steve B. Howell, Mary Jimenez, David W. Latham, Maude Larivière, Kathryn V. Lester, Jorge Lillo-Box, Lindy Luker, Christopher R. Mann, Peter P. Plavchan, Boris Safonov, Brett Skinner, Ivan A. Strakhov, Justin M. Wittrock, Douglas A. Caldwell, Zahra Essack, Jon M. Jenkins, Elisa V. Quintana, George R. Ricker, Roland Vanderspek, S. Seager, Joshua N. Winn

Astrophysical Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

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 , 2.47 ± 0.08 R , 3.46 ± 0.09 R , and 3.72 ± 0.16 R ) 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 , 8.8 ± 1.2 M , 5.3 ± 1.7 M , and 14.8 ± 2.3 M ). 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 . 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.

Original language	English (US)
Article number	293
Journal	Astronomical Journal
Volume	163
Issue number	6
DOIs	https://doi.org/10.3847/1538-3881/ac69e5
State	Published - Jun 1 2022

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.3847/1538-3881/ac69e5

Cite this

Turtelboom, E. V., Weiss, L. M., Dressing, C. D., Nowak, G., Palle, E., Beard, C., Blunt, S., Brinkman, C., Chontos, A., Claytor, Z. R., Dai, F., Dalba, P. A., Giacalone, S., Gonzales, E., Harada, C. K., Hill, M. L., Holcomb, R., Korth, J., Lubin, J., ... Winn, J. N. (2022). The TESS-Keck Survey. XI. Mass Measurements for Four Transiting Sub-Neptunes Orbiting K Dwarf TOI-1246. Astronomical Journal, 163(6), [293]. https://doi.org/10.3847/1538-3881/ac69e5

@article{4c2e485ed2e04002b27c0aae266efe97,

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

abstract = "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 , 2.47 ± 0.08 R , 3.46 ± 0.09 R , and 3.72 ± 0.16 R ) 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 , 8.8 ± 1.2 M , 5.3 ± 1.7 M , and 14.8 ± 2.3 M ). 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 . 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.",

author = "Turtelboom, {Emma V.} and Weiss, {Lauren M.} and Dressing, {Courtney D.} and Grzegorz Nowak and Enric Palle and Corey Beard and Sarah Blunt and Casey Brinkman and Ashley Chontos and Claytor, {Zachary R.} and Fei Dai and Dalba, {Paul A.} and Steven Giacalone and Erica Gonzales and Harada, {Caleb K.} and Hill, {Michelle L.} and Rae Holcomb and Judith Korth and Jack Lubin and Thomas Masseron and Mason Macdougall and Mayo, {Andrew W.} and Teo Mo{\v c}nik and {Akana Murphy}, {Joseph M.} and Polanski, {Alex S.} and Malena Rice and Rubenzahl, {Ryan A.} and Nicholas Scarsdale and Stassun, {Keivan G.} and Tyler, {Dakotah B.} and Zandt, {Judah Van} and Crossfield, {Ian J.M.} and Deeg, {Hans J.} and Benjamin Fulton and Davide Gandolfi and Howard, {Andrew W.} and Dan Huber and Howard Isaacson and Kane, {Stephen R.} and Lam, {Kristine W.F.} and Rafael Luque and Martin, {Eduardo L.} and Giuseppe Morello and Jaume Orell-Miquel and Petigura, {Erik A.} and Paul Robertson and Arpita Roy and {Van Eylen}, Vincent and David Baker and Belinski, {Alexander A.} and Allyson Bieryla and Ciardi, {David R.} and Collins, {Karen A.} and Neil Cutting and Della-Rose, {Devin J.} and Ellingsen, {Taylor B.} and E. Furlan and Tianjun Gan and Gnilka, {Crystal L.} and Pere Guerra and Howell, {Steve B.} and Mary Jimenez and Latham, {David W.} and Maude Larivi{\`e}re and Lester, {Kathryn V.} and Jorge Lillo-Box and Lindy Luker and Mann, {Christopher R.} and Plavchan, {Peter P.} and Boris Safonov and Brett Skinner and Strakhov, {Ivan A.} and Wittrock, {Justin M.} and Caldwell, {Douglas A.} and Zahra Essack and Jenkins, {Jon M.} and Quintana, {Elisa V.} and Ricker, {George R.} and Roland Vanderspek and S. Seager and Winn, {Joshua N.}",

note = "Funding Information: This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. Funding Information: This work also makes use of observations from the LCOGT network. Part of the LCOGT telescope time was granted by NOIRLab through the Mid-Scale Innovations Program (MSIP). MSIP is funded by NSF. Funding Information: This paper includes data collected by the TESS mission. Funding for the TESS mission is provided by NASA{\textquoteright}s Science Mission Directorate. We acknowledge the use of public TOI Release data from pipelines at the TESS Science Office and at the TESS Science Processing Operations Center. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center for the production of the SPOC data products. This research has made use of the Exoplanet Follow-up Observation Program website, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. This research has also made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Funding Information: Some of the observations in the paper made use of the High-Resolution Imaging instrument Alopeke obtained under Gemini LLP Proposal Number: GN/S-2021A-LP-105. Alopeke was funded by the NASA Exoplanet Exploration Program and built at the NASA Ames Research Center by Steve B. Howell, Nic Scott, Elliott P. Horch, and Emmett Quigley. {\textquoteright}Alopeke was mounted on the Gemini North telescope of the international Gemini Observatory, a program of NSF's NOIR Lab, which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation on behalf of the Gemini partnership: the National Science Foundation (United States), National Research Council (Canada), Agencia Nacional de Investigaci{\'o}n y Desarrollo (Chile), Ministerio de Ciencia, Tecnolog{\'i}a e Innovaci{\'o}n (Argentina), Minist{\'e}rio da Ci{\^e}ncia, Tecnologia, Inova{\c c}{\~o}es e Comunica{\c c}{\~o}es (Brazil), and Korea Astronomy and Space Science Institute (Republic of Korea). Funding Information: This work is based on observations made with the Italian Telescopio Nazionale Galileo (TNG) operated on the island of La Palma by the Fundaci{\'o}n Galileo Galilei of the INAF (Istituto Nazionale di Astrofisica) at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias under programs CAT19A_162, ITP19_1 and A41TAC_49. Part of this work is done under the framework of the KESPRINT collaboration ( http://kesprint.science ). KESPRINT is an international consortium devoted to the characterization and research of exoplanets discovered with space-based missions. This work is partly financed by the Spanish Ministry of Economics and Competitiveness through grants PGC2018-098153-B-C31. Funding Information: This work has made use of data from the European Space Agency (ESA) mission Gaia ( https://www.cosmos.esa.int/gaia ), processed by the Gaia Data Processing and Analysis Consortium (DPAC; https://www.cosmos.esa.int/web/gaia/dpac/consortium ). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. Publisher Copyright: {\textcopyright} 2022. The Author(s). Published by the American Astronomical Society.",

year = "2022",

month = jun,

day = "1",

doi = "10.3847/1538-3881/ac69e5",

language = "English (US)",

volume = "163",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "IOP Publishing Ltd.",

number = "6",

}

Turtelboom, EV, Weiss, LM, Dressing, CD, Nowak, G, Palle, E, Beard, C, Blunt, S, Brinkman, C, Chontos, A, Claytor, ZR, Dai, F, Dalba, PA, Giacalone, S, Gonzales, E, Harada, CK, Hill, ML, Holcomb, R, Korth, J, Lubin, J, Masseron, T, Macdougall, M, Mayo, AW, Močnik, T, Akana Murphy, JM, Polanski, AS, Rice, M, Rubenzahl, RA, Scarsdale, N, Stassun, KG, Tyler, DB, Zandt, JV, Crossfield, IJM, Deeg, HJ, Fulton, B, Gandolfi, D, Howard, AW, Huber, D, Isaacson, H, Kane, SR, Lam, KWF, Luque, R, Martin, EL, Morello, G, Orell-Miquel, J, Petigura, EA, Robertson, P, Roy, A, Van Eylen, V, Baker, D, Belinski, AA, Bieryla, A, Ciardi, DR, Collins, KA, Cutting, N, Della-Rose, DJ, Ellingsen, TB, Furlan, E, Gan, T, Gnilka, CL, Guerra, P, Howell, SB, Jimenez, M, Latham, DW, Larivière, M, Lester, KV, Lillo-Box, J, Luker, L, Mann, CR, Plavchan, PP, Safonov, B, Skinner, B, Strakhov, IA, Wittrock, JM, Caldwell, DA, Essack, Z, Jenkins, JM, Quintana, EV, Ricker, GR, Vanderspek, R, Seager, S & Winn, JN 2022, 'The TESS-Keck Survey. XI. Mass Measurements for Four Transiting Sub-Neptunes Orbiting K Dwarf TOI-1246', Astronomical Journal, vol. 163, no. 6, 293. https://doi.org/10.3847/1538-3881/ac69e5

TY - JOUR

T1 - The TESS-Keck Survey. XI. Mass Measurements for Four Transiting Sub-Neptunes Orbiting K Dwarf TOI-1246

AU - Turtelboom, Emma V.

AU - Weiss, Lauren M.

AU - Dressing, Courtney D.

AU - Nowak, Grzegorz

AU - Palle, Enric

AU - Beard, Corey

AU - Blunt, Sarah

AU - Brinkman, Casey

AU - Chontos, Ashley

AU - Claytor, Zachary R.

AU - Dai, Fei

AU - Dalba, Paul A.

AU - Giacalone, Steven

AU - Gonzales, Erica

AU - Harada, Caleb K.

AU - Hill, Michelle L.

AU - Holcomb, Rae

AU - Korth, Judith

AU - Lubin, Jack

AU - Masseron, Thomas

AU - Macdougall, Mason

AU - Mayo, Andrew W.

AU - Močnik, Teo

AU - Akana Murphy, Joseph M.

AU - Polanski, Alex S.

AU - Rice, Malena

AU - Rubenzahl, Ryan A.

AU - Scarsdale, Nicholas

AU - Stassun, Keivan G.

AU - Tyler, Dakotah B.

AU - Zandt, Judah Van

AU - Crossfield, Ian J.M.

AU - Deeg, Hans J.

AU - Fulton, Benjamin

AU - Gandolfi, Davide

AU - Howard, Andrew W.

AU - Huber, Dan

AU - Isaacson, Howard

AU - Kane, Stephen R.

AU - Lam, Kristine W.F.

AU - Luque, Rafael

AU - Martin, Eduardo L.

AU - Morello, Giuseppe

AU - Orell-Miquel, Jaume

AU - Petigura, Erik A.

AU - Robertson, Paul

AU - Roy, Arpita

AU - Van Eylen, Vincent

AU - Baker, David

AU - Belinski, Alexander A.

AU - Bieryla, Allyson

AU - Ciardi, David R.

AU - Collins, Karen A.

AU - Cutting, Neil

AU - Della-Rose, Devin J.

AU - Ellingsen, Taylor B.

AU - Furlan, E.

AU - Gan, Tianjun

AU - Gnilka, Crystal L.

AU - Guerra, Pere

AU - Howell, Steve B.

AU - Jimenez, Mary

AU - Latham, David W.

AU - Larivière, Maude

AU - Lester, Kathryn V.

AU - Lillo-Box, Jorge

AU - Luker, Lindy

AU - Mann, Christopher R.

AU - Plavchan, Peter P.

AU - Safonov, Boris

AU - Skinner, Brett

AU - Strakhov, Ivan A.

AU - Wittrock, Justin M.

AU - Caldwell, Douglas A.

AU - Essack, Zahra

AU - Jenkins, Jon M.

AU - Quintana, Elisa V.

AU - Ricker, George R.

AU - Vanderspek, Roland

AU - Seager, S.

AU - Winn, Joshua N.

N1 - Funding Information: This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. Funding Information: This work also makes use of observations from the LCOGT network. Part of the LCOGT telescope time was granted by NOIRLab through the Mid-Scale Innovations Program (MSIP). MSIP is funded by NSF. Funding Information: This paper includes data collected by the TESS mission. Funding for the TESS mission is provided by NASA’s Science Mission Directorate. We acknowledge the use of public TOI Release data from pipelines at the TESS Science Office and at the TESS Science Processing Operations Center. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center for the production of the SPOC data products. This research has made use of the Exoplanet Follow-up Observation Program website, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. This research has also made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Funding Information: Some of the observations in the paper made use of the High-Resolution Imaging instrument Alopeke obtained under Gemini LLP Proposal Number: GN/S-2021A-LP-105. Alopeke was funded by the NASA Exoplanet Exploration Program and built at the NASA Ames Research Center by Steve B. Howell, Nic Scott, Elliott P. Horch, and Emmett Quigley. ’Alopeke was mounted on the Gemini North telescope of the international Gemini Observatory, a program of NSF's NOIR Lab, which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation on behalf of the Gemini partnership: the National Science Foundation (United States), National Research Council (Canada), Agencia Nacional de Investigación y Desarrollo (Chile), Ministerio de Ciencia, Tecnología e Innovación (Argentina), Ministério da Ciência, Tecnologia, Inovações e Comunicações (Brazil), and Korea Astronomy and Space Science Institute (Republic of Korea). Funding Information: This work is based on observations made with the Italian Telescopio Nazionale Galileo (TNG) operated on the island of La Palma by the Fundación Galileo Galilei of the INAF (Istituto Nazionale di Astrofisica) at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias under programs CAT19A_162, ITP19_1 and A41TAC_49. Part of this work is done under the framework of the KESPRINT collaboration ( http://kesprint.science ). KESPRINT is an international consortium devoted to the characterization and research of exoplanets discovered with space-based missions. This work is partly financed by the Spanish Ministry of Economics and Competitiveness through grants PGC2018-098153-B-C31. Funding Information: This work has made use of data from the European Space Agency (ESA) mission Gaia ( https://www.cosmos.esa.int/gaia ), processed by the Gaia Data Processing and Analysis Consortium (DPAC; https://www.cosmos.esa.int/web/gaia/dpac/consortium ). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. Publisher Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

PY - 2022/6/1

Y1 - 2022/6/1

N2 - 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 , 2.47 ± 0.08 R , 3.46 ± 0.09 R , and 3.72 ± 0.16 R ) 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 , 8.8 ± 1.2 M , 5.3 ± 1.7 M , and 14.8 ± 2.3 M ). 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 . 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.

AB - 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 , 2.47 ± 0.08 R , 3.46 ± 0.09 R , and 3.72 ± 0.16 R ) 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 , 8.8 ± 1.2 M , 5.3 ± 1.7 M , and 14.8 ± 2.3 M ). 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 . 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.

UR - http://www.scopus.com/inward/record.url?scp=85131569988&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85131569988&partnerID=8YFLogxK

U2 - 10.3847/1538-3881/ac69e5

DO - 10.3847/1538-3881/ac69e5

M3 - Article

AN - SCOPUS:85131569988

SN - 0004-6256

VL - 163

JO - Astronomical Journal

JF - Astronomical Journal

IS - 6

M1 - 293

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this