The TESS-Keck Survey. XI. Mass Measurements for Four Transiting Sub-Neptunes Orbiting K Dwarf TOI-1246
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The TESS-Keck Survey. XI. Mass Measurements for Four Transiting Sub-Neptunes Orbiting K Dwarf TOI-1246. / Turtelboom, Emma; Weiss, Lauren M.; Dressing, Courtney D.; Nowak, Grzegorz; Palle, Enric; Beard, Corey; Blunt, Sarah; Brinkman, Casey; Chontos, Ashley; Claytor, Zachary R.; Dai, Fei; Dalba, Paul A.; Giacalone, Steven; Gonzales, Erica; Harada, Caleb K.; Hill, Michelle L.; Holcomb, Rae; Korth, Judith; Lubin, Jack; Masseron, Thomas; MacDougall, Mason; Mayo, Andrew W.; Mocnik, Teo; Murphy, Joseph M. Akana; Polanski, Alex S.; Rice, Malena; Rubenzahl, Ryan A.; Scarsdale, Nicholas; Stassun, Keivan G.; Tyler, Dakotah B.; Van Zandt, Judah; Crossfield, Ian J. M.; Deeg, Hans J.; Fulton, Benjamin; Gandolfi, Davide; Howard, Andrew W.; Huber, Dan; Isaacson, Howard; Kane, Stephen R.; Lam, Kristine W. F.; Luque, Rafael; Martin, Eduardo L.; Morello, Giuseppe; Orell-Miquel, Jaume; Petigura, Erik A.; Robertson, Paul; Roy, Arpita; Van Eylen, Vincent; Baker, David; Belinski, Alexander A.; Bieryla, Allyson; Ciardi, David R.; Collins, Karen A.; Cutting, Neil; Della-Rose, Devin J.; Ellingsen, Taylor B.; Furlan, E.; Gan, Tianjun; Gnilka, Crystal L.; Guerra, Pere; Howell, Steve B.; Jimenez, Mary; Latham, David W.; Lariviere, Maude; Lester, Kathryn; Lillo-Box, Jorge; Luker, Lindy; Mann, Christopher R.; Plavchan, Peter P.; Safonov, Boris; Skinner, Brett; Strakhov, Ivan A.; Wittrock, Justin M.; Caldwell, Douglas A.; Essack, Zahra; Jenkins, Jon M.; Quintana, Elisa; Ricker, George R.; Vanderspek, Roland; Seager, S.; Winn, Joshua N.
In: Astronomical Journal, Vol. 163, No. 6, 293, 01.06.2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The TESS-Keck Survey. XI. Mass Measurements for Four Transiting Sub-Neptunes Orbiting K Dwarf TOI-1246
AU - Turtelboom, Emma
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 - Mocnik, Teo
AU - Murphy, Joseph M. Akana
AU - Polanski, Alex S.
AU - Rice, Malena
AU - Rubenzahl, Ryan A.
AU - Scarsdale, Nicholas
AU - Stassun, Keivan G.
AU - Tyler, Dakotah B.
AU - Van Zandt, Judah
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 - Lariviere, Maude
AU - Lester, Kathryn
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
AU - Ricker, George R.
AU - Vanderspek, Roland
AU - Seager, S.
AU - Winn, Joshua N.
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 (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.
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 (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.
KW - MULTI-PLANET SYSTEM
KW - VELOCITY FOLLOW-UP
KW - RADIAL-VELOCITY
KW - SUPER-EARTH
KW - SHORT-PERIOD
KW - MULTIPLANET SYSTEMS
KW - TIMING OBSERVATIONS
KW - ERROR-CORRECTION
KW - RESONANT CHAIN
KW - KEPLER
U2 - 10.3847/1538-3881/ac69e5
DO - 10.3847/1538-3881/ac69e5
M3 - Journal article
VL - 163
JO - The Astronomical Journal
JF - The Astronomical Journal
SN - 0004-6256
IS - 6
M1 - 293
ER -
ID: 315767990