TOI-969: a late-K dwarf with a hot mini-Neptune in the desert and an eccentric cold Jupiter,

J. Lillo-Box; D. Gandolfi; D. J. Armstrong; K. A. Collins; L. D. Nielsen; R. Luque; J. Korth; S. G. Sousa; S. N. Quinn; L. Acuña; S. B. Howell; G. Morello; C. Hellier; S. Giacalone; S. Hoyer; K. Stassun; E. Palle; A. Aguichine; O. Mousis; V. Adibekyan; T. Azevedo Silva; D. Barrado; M. Deleuil; J. D. Eastman; A. Fukui; F. Hawthorn; J. M. Irwin; J. M. Jenkins; D. W. Latham; A. Muresan; N. Narita; C. M. Persson; A. Santerne; N. C. Santos; A. B. Savel; H. P. Osborn; J. Teske; P. J. Wheatley; J. N. Winn; S. C.C. Barros; R. P. Butler; D. A. Caldwell; D. Charbonneau; R. Cloutier; J. D. Crane; O. D.S. Demangeon; R. F. Díaz; X. Dumusque; M. Esposito; B. Falk; H. Gill; S. Hojjatpanah; L. Kreidberg; I. Mireles; A. Osborn; G. R. Ricker; J. E. Rodriguez; R. P. Schwarz; S. Seager; J. Serrano Bell; S. A. Shectman; A. Shporer; M. Vezie; S. X. Wang; G. Zhou

doi:10.1051/0004-6361/202243879

TOI-969: a late-K dwarf with a hot mini-Neptune in the desert and an eccentric cold Jupiter^,

J. Lillo-Box, D. Gandolfi, D. J. Armstrong, K. A. Collins, L. D. Nielsen, R. Luque, J. Korth, S. G. Sousa, S. N. Quinn, L. Acuña, S. B. Howell, G. Morello, C. Hellier, S. Giacalone, S. Hoyer, K. Stassun, E. Palle, A. Aguichine, O. Mousis, V. AdibekyanT. Azevedo Silva, D. Barrado, M. Deleuil, J. D. Eastman, A. Fukui, F. Hawthorn, J. M. Irwin, J. M. Jenkins, D. W. Latham, A. Muresan, N. Narita, C. M. Persson, A. Santerne, N. C. Santos, A. B. Savel, H. P. Osborn, J. Teske, P. J. Wheatley, J. N. Winn, S. C.C. Barros, R. P. Butler, D. A. Caldwell, D. Charbonneau, R. Cloutier, J. D. Crane, O. D.S. Demangeon, R. F. Díaz, X. Dumusque, M. Esposito, B. Falk, H. Gill, S. Hojjatpanah, L. Kreidberg, I. Mireles, A. Osborn, G. R. Ricker, J. E. Rodriguez, R. P. Schwarz, S. Seager, J. Serrano Bell, S. A. Shectman, A. Shporer, M. Vezie, S. X. Wang, G. Zhou

Astrophysical Sciences

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

9 Scopus citations

Abstract

Context. The current architecture of a given multi-planetary system is a key fingerprint of its past formation and dynamical evolution history. Long-term follow-up observations are key to complete their picture. Aims. In this paper, we focus on the confirmation and characterization of the components of the TOI-969 planetary system, where TESS detected a Neptune-size planet candidate in a very close-in orbit around a late K-dwarf star. Methods. We use a set of precise radial velocity observations from HARPS, PFS, and CORALIE instruments covering more than two years in combination with the TESS photometric light curve and other ground-based follow-up observations to confirm and characterize the components of this planetary system. Results. We find that TOI-969 b is a transiting close-in (P_b ∼ 1.82 days) mini-Neptune planet (Formula Presented), placing it on the lower boundary of the hot-Neptune desert (T_eq,b = 941 ± 31 K). The analysis of its internal structure shows that TOI-969 b is a volatile-rich planet, suggesting it underwent an inward migration. The radial velocity model also favors the presence of a second massive body in the system, TOI-969 c, with a long period of (Formula Presented) days, a minimum mass of (Formula Presented), and a highly eccentric orbit of (Formula Presented). Conclusions. The TOI-969 planetary system is one of the few around K-dwarfs known to have this extended configuration going from a very close-in planet to a wide-separation gaseous giant. TOI-969 b has a transmission spectroscopy metric of 93 and orbits a moderately bright (G = 11.3 mag) star, making it an excellent target for atmospheric studies. The architecture of this planetary system can also provide valuable information about migration and formation of planetary systems.

Original language	English (US)
Article number	A109
Journal	Astronomy and Astrophysics
Volume	669
DOIs	https://doi.org/10.1051/0004-6361/202243879
State	Published - Jan 1 2023

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

planets and satellites: composition
planets and satellites: detection
planets and satellites: fundamental parameters
stars: individual: TOI-969
techniques: photometric
techniques: radial velocities

Access to Document

10.1051/0004-6361/202243879

Cite this

Lillo-Box, J., Gandolfi, D., Armstrong, D. J., Collins, K. A., Nielsen, L. D., Luque, R., Korth, J., Sousa, S. G., Quinn, S. N., Acuña, L., Howell, S. B., Morello, G., Hellier, C., Giacalone, S., Hoyer, S., Stassun, K., Palle, E., Aguichine, A., Mousis, O., ... Zhou, G. (2023). TOI-969: a late-K dwarf with a hot mini-Neptune in the desert and an eccentric cold Jupiter^,. Astronomy and Astrophysics, 669, Article A109. https://doi.org/10.1051/0004-6361/202243879

@article{5b6409bd83bc41829729852848eacea9,

title = "TOI-969: a late-K dwarf with a hot mini-Neptune in the desert and an eccentric cold Jupiter,",

abstract = "Context. The current architecture of a given multi-planetary system is a key fingerprint of its past formation and dynamical evolution history. Long-term follow-up observations are key to complete their picture. Aims. In this paper, we focus on the confirmation and characterization of the components of the TOI-969 planetary system, where TESS detected a Neptune-size planet candidate in a very close-in orbit around a late K-dwarf star. Methods. We use a set of precise radial velocity observations from HARPS, PFS, and CORALIE instruments covering more than two years in combination with the TESS photometric light curve and other ground-based follow-up observations to confirm and characterize the components of this planetary system. Results. We find that TOI-969 b is a transiting close-in (Pb ∼ 1.82 days) mini-Neptune planet (Formula Presented), placing it on the lower boundary of the hot-Neptune desert (Teq,b = 941 ± 31 K). The analysis of its internal structure shows that TOI-969 b is a volatile-rich planet, suggesting it underwent an inward migration. The radial velocity model also favors the presence of a second massive body in the system, TOI-969 c, with a long period of (Formula Presented) days, a minimum mass of (Formula Presented), and a highly eccentric orbit of (Formula Presented). Conclusions. The TOI-969 planetary system is one of the few around K-dwarfs known to have this extended configuration going from a very close-in planet to a wide-separation gaseous giant. TOI-969 b has a transmission spectroscopy metric of 93 and orbits a moderately bright (G = 11.3 mag) star, making it an excellent target for atmospheric studies. The architecture of this planetary system can also provide valuable information about migration and formation of planetary systems.",

keywords = "planets and satellites: composition, planets and satellites: detection, planets and satellites: fundamental parameters, stars: individual: TOI-969, techniques: photometric, techniques: radial velocities",

author = "J. Lillo-Box and D. Gandolfi and Armstrong, {D. J.} and Collins, {K. A.} and Nielsen, {L. D.} and R. Luque and J. Korth and Sousa, {S. G.} and Quinn, {S. N.} and L. Acu{\~n}a and Howell, {S. B.} and G. Morello and C. Hellier and S. Giacalone and S. Hoyer and K. Stassun and E. Palle and A. Aguichine and O. Mousis and V. Adibekyan and Silva, {T. Azevedo} and D. Barrado and M. Deleuil and Eastman, {J. D.} and A. Fukui and F. Hawthorn and Irwin, {J. M.} and Jenkins, {J. M.} and Latham, {D. W.} and A. Muresan and N. Narita and Persson, {C. M.} and A. Santerne and Santos, {N. C.} and Savel, {A. B.} and Osborn, {H. P.} and J. Teske and Wheatley, {P. J.} and Winn, {J. N.} and Barros, {S. C.C.} and Butler, {R. P.} and Caldwell, {D. A.} and D. Charbonneau and R. Cloutier and Crane, {J. D.} and Demangeon, {O. D.S.} and D{\'i}az, {R. F.} and X. Dumusque and M. Esposito and B. Falk and H. Gill and S. Hojjatpanah and L. Kreidberg and I. Mireles and A. Osborn and Ricker, {G. R.} and Rodriguez, {J. E.} and Schwarz, {R. P.} and S. Seager and Bell, {J. Serrano} and Shectman, {S. A.} and A. Shporer and M. Vezie and Wang, {S. X.} and G. Zhou",

note = "Publisher Copyright: {\textcopyright} The Authors 2023.",

year = "2023",

month = jan,

day = "1",

doi = "10.1051/0004-6361/202243879",

language = "English (US)",

volume = "669",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

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Lillo-Box, J, Gandolfi, D, Armstrong, DJ, Collins, KA, Nielsen, LD, Luque, R, Korth, J, Sousa, SG, Quinn, SN, Acuña, L, Howell, SB, Morello, G, Hellier, C, Giacalone, S, Hoyer, S, Stassun, K, Palle, E, Aguichine, A, Mousis, O, Adibekyan, V, Silva, TA, Barrado, D, Deleuil, M, Eastman, JD, Fukui, A, Hawthorn, F, Irwin, JM, Jenkins, JM, Latham, DW, Muresan, A, Narita, N, Persson, CM, Santerne, A, Santos, NC, Savel, AB, Osborn, HP, Teske, J, Wheatley, PJ, Winn, JN, Barros, SCC, Butler, RP, Caldwell, DA, Charbonneau, D, Cloutier, R, Crane, JD, Demangeon, ODS, Díaz, RF, Dumusque, X, Esposito, M, Falk, B, Gill, H, Hojjatpanah, S, Kreidberg, L, Mireles, I, Osborn, A, Ricker, GR, Rodriguez, JE, Schwarz, RP, Seager, S, Bell, JS, Shectman, SA, Shporer, A, Vezie, M, Wang, SX & Zhou, G 2023, 'TOI-969: a late-K dwarf with a hot mini-Neptune in the desert and an eccentric cold Jupiter^,', Astronomy and Astrophysics, vol. 669, A109. https://doi.org/10.1051/0004-6361/202243879

TY - JOUR

T1 - TOI-969

T2 - a late-K dwarf with a hot mini-Neptune in the desert and an eccentric cold Jupiter,

AU - Lillo-Box, J.

AU - Gandolfi, D.

AU - Armstrong, D. J.

AU - Collins, K. A.

AU - Nielsen, L. D.

AU - Luque, R.

AU - Korth, J.

AU - Sousa, S. G.

AU - Quinn, S. N.

AU - Acuña, L.

AU - Howell, S. B.

AU - Morello, G.

AU - Hellier, C.

AU - Giacalone, S.

AU - Hoyer, S.

AU - Stassun, K.

AU - Palle, E.

AU - Aguichine, A.

AU - Mousis, O.

AU - Adibekyan, V.

AU - Silva, T. Azevedo

AU - Barrado, D.

AU - Deleuil, M.

AU - Eastman, J. D.

AU - Fukui, A.

AU - Hawthorn, F.

AU - Irwin, J. M.

AU - Jenkins, J. M.

AU - Latham, D. W.

AU - Muresan, A.

AU - Narita, N.

AU - Persson, C. M.

AU - Santerne, A.

AU - Santos, N. C.

AU - Savel, A. B.

AU - Osborn, H. P.

AU - Teske, J.

AU - Wheatley, P. J.

AU - Winn, J. N.

AU - Barros, S. C.C.

AU - Butler, R. P.

AU - Caldwell, D. A.

AU - Charbonneau, D.

AU - Cloutier, R.

AU - Crane, J. D.

AU - Demangeon, O. D.S.

AU - Díaz, R. F.

AU - Dumusque, X.

AU - Esposito, M.

AU - Falk, B.

AU - Gill, H.

AU - Hojjatpanah, S.

AU - Kreidberg, L.

AU - Mireles, I.

AU - Osborn, A.

AU - Ricker, G. R.

AU - Rodriguez, J. E.

AU - Schwarz, R. P.

AU - Seager, S.

AU - Bell, J. Serrano

AU - Shectman, S. A.

AU - Shporer, A.

AU - Vezie, M.

AU - Wang, S. X.

AU - Zhou, G.

PY - 2023/1/1

Y1 - 2023/1/1

N2 - Context. The current architecture of a given multi-planetary system is a key fingerprint of its past formation and dynamical evolution history. Long-term follow-up observations are key to complete their picture. Aims. In this paper, we focus on the confirmation and characterization of the components of the TOI-969 planetary system, where TESS detected a Neptune-size planet candidate in a very close-in orbit around a late K-dwarf star. Methods. We use a set of precise radial velocity observations from HARPS, PFS, and CORALIE instruments covering more than two years in combination with the TESS photometric light curve and other ground-based follow-up observations to confirm and characterize the components of this planetary system. Results. We find that TOI-969 b is a transiting close-in (Pb ∼ 1.82 days) mini-Neptune planet (Formula Presented), placing it on the lower boundary of the hot-Neptune desert (Teq,b = 941 ± 31 K). The analysis of its internal structure shows that TOI-969 b is a volatile-rich planet, suggesting it underwent an inward migration. The radial velocity model also favors the presence of a second massive body in the system, TOI-969 c, with a long period of (Formula Presented) days, a minimum mass of (Formula Presented), and a highly eccentric orbit of (Formula Presented). Conclusions. The TOI-969 planetary system is one of the few around K-dwarfs known to have this extended configuration going from a very close-in planet to a wide-separation gaseous giant. TOI-969 b has a transmission spectroscopy metric of 93 and orbits a moderately bright (G = 11.3 mag) star, making it an excellent target for atmospheric studies. The architecture of this planetary system can also provide valuable information about migration and formation of planetary systems.

AB - Context. The current architecture of a given multi-planetary system is a key fingerprint of its past formation and dynamical evolution history. Long-term follow-up observations are key to complete their picture. Aims. In this paper, we focus on the confirmation and characterization of the components of the TOI-969 planetary system, where TESS detected a Neptune-size planet candidate in a very close-in orbit around a late K-dwarf star. Methods. We use a set of precise radial velocity observations from HARPS, PFS, and CORALIE instruments covering more than two years in combination with the TESS photometric light curve and other ground-based follow-up observations to confirm and characterize the components of this planetary system. Results. We find that TOI-969 b is a transiting close-in (Pb ∼ 1.82 days) mini-Neptune planet (Formula Presented), placing it on the lower boundary of the hot-Neptune desert (Teq,b = 941 ± 31 K). The analysis of its internal structure shows that TOI-969 b is a volatile-rich planet, suggesting it underwent an inward migration. The radial velocity model also favors the presence of a second massive body in the system, TOI-969 c, with a long period of (Formula Presented) days, a minimum mass of (Formula Presented), and a highly eccentric orbit of (Formula Presented). Conclusions. The TOI-969 planetary system is one of the few around K-dwarfs known to have this extended configuration going from a very close-in planet to a wide-separation gaseous giant. TOI-969 b has a transmission spectroscopy metric of 93 and orbits a moderately bright (G = 11.3 mag) star, making it an excellent target for atmospheric studies. The architecture of this planetary system can also provide valuable information about migration and formation of planetary systems.

KW - planets and satellites: composition

KW - planets and satellites: detection

KW - planets and satellites: fundamental parameters

KW - stars: individual: TOI-969

KW - techniques: photometric

KW - techniques: radial velocities

UR - http://www.scopus.com/inward/record.url?scp=85147141597&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85147141597&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/202243879

DO - 10.1051/0004-6361/202243879

M3 - Article

AN - SCOPUS:85147141597

SN - 0004-6361

VL - 669

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A109

ER -