Discovery of TOI-1260d and the characterization of the multiplanet system

K. W.F. Lam; J. Cabrera; M. J. Hooton; Y. Alibert; A. Bonfanti; M. Beck; A. Deline; H. G. Floren; A. E. Simon; L. Fossati; C. M. Persson; M. Fridlund; S. Salmon; S. Hoyer; H. P. Osborn; T. G. Wilson; I. Y. Georgieva; Gr Nowak; R. Luque; J. A. Egger; V. Adibekyan; R. Alonso; G. A. Escude; T. Bárczy; D. Barrado; S. C.C. Barros; W. Baumjohann; T. Beck; A. Bekkelien; W. Benz; N. Billot; X. Bonfils; A. Brandeker; C. Broeg; S. Charnoz; A. C. Cameron; Sz Csizmadia; M. B. Davies; M. Deleuil; L. Delrez; O. D.S. Demangeon; B. O. Demory; D. Ehrenreich; A. Erikson; A. Fortier; D. Futyan; D. Gandolfi; M. Gillon; M. Guedel; P. Guterman; J. Laskar; D. W. Latham; A. Lecavelier Des Etangs; M. Lendl; C. Lovis; K. Heng; K. G. Isaak; L. Kiss; D. Magrin; P. F.L. Maxted; V. Nascimbeni; G. Olofsson; R. Ottensamer; I. Pagano; E. Palle; G. Peter; G. Piotto; D. Pollacco; D. Queloz; I. Ribas; R. Ragazzoni; N. Rando; H. Rauer; N. C. Santos; G. Scandariato; S. Seager; D. Segransan; L. M. Serrano; A. M.S. Smith; S. G. Sousa; M. Steller; G. M. Szabó; N. Thomas; S. Udry; V. Van Grootel; N. A. Walton; J. N. Winn

doi:10.1093/mnras/stac3639

Discovery of TOI-1260d and the characterization of the multiplanet system

K. W.F. Lam, J. Cabrera, M. J. Hooton, Y. Alibert, A. Bonfanti, M. Beck, A. Deline, H. G. Floren, A. E. Simon, L. Fossati, C. M. Persson, M. Fridlund, S. Salmon, S. Hoyer, H. P. Osborn, T. G. Wilson, I. Y. Georgieva, Gr Nowak, R. Luque, J. A. EggerV. Adibekyan, R. Alonso, G. A. Escude, T. Bárczy, D. Barrado, S. C.C. Barros, W. Baumjohann, T. Beck, A. Bekkelien, W. Benz, N. Billot, X. Bonfils, A. Brandeker, C. Broeg, S. Charnoz, A. C. Cameron, Sz Csizmadia, M. B. Davies, M. Deleuil, L. Delrez, O. D.S. Demangeon, B. O. Demory, D. Ehrenreich, A. Erikson, A. Fortier, D. Futyan, D. Gandolfi, M. Gillon, M. Guedel, P. Guterman, J. Laskar, D. W. Latham, A. Lecavelier Des Etangs, M. Lendl, C. Lovis, K. Heng, K. G. Isaak, L. Kiss, D. Magrin, P. F.L. Maxted, V. Nascimbeni, G. Olofsson, R. Ottensamer, I. Pagano, E. Palle, G. Peter, G. Piotto, D. Pollacco, D. Queloz, I. Ribas, R. Ragazzoni, N. Rando, H. Rauer, N. C. Santos, G. Scandariato, S. Seager, D. Segransan, L. M. Serrano, A. M.S. Smith, S. G. Sousa, M. Steller, G. M. Szabó, N. Thomas, S. Udry, V. Van Grootel, N. A. Walton, J. N. Winn

Astrophysical Sciences

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4 Scopus citations

Abstract

We report the discovery of a third planet transiting the star TOI-1260, previously known to host two transiting sub-Neptune planets with orbital periods of 3.127 and 7.493 d, respectively. The nature of the third transiting planet with a 16.6-d orbit is supported by ground-based follow-up observations, including time-series photometry, high-angular resolution images, spectroscopy, and archival imagery. Precise photometric monitoring with CHEOPS allows to improve the constraints on the parameters of the system, improving our knowledge on their composition. The improved radii of TOI-1260b and TOI-1260c are 2.36 ± 0.06 R⊕, 2.82 ± 0.08 R⊕ , respectively while the newly discovered third planet has a radius of 3.09 ± 0.09 R⊕. The radius uncertainties are in the range of 3 per cent, allowing a precise interpretation of the interior structure of the three planets. Our planet interior composition model suggests that all three planets in the TOI-1260 system contains some fraction of gas. The innermost planet TOI-1260b has most likely lost all of its primordial hydrogen-dominated envelope. Planets c and d were also likely to have experienced significant loss of atmospheric through escape, but to a lesser extent compared to planet b.

Original language	English (US)
Pages (from-to)	1437-1451
Number of pages	15
Journal	Monthly Notices of the Royal Astronomical Society
Volume	519
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stac3639
State	Published - Feb 1 2023

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Techniques: photometric
c
d
planets and satellites: composition
planets and satellites: detection
planets and satellites: individual: TOI-1260b
stars: individual: TOI-1260
techniques: radial velocities

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10.1093/mnras/stac3639

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Lam, K. W. F., Cabrera, J., Hooton, M. J., Alibert, Y., Bonfanti, A., Beck, M., Deline, A., Floren, H. G., Simon, A. E., Fossati, L., Persson, C. M., Fridlund, M., Salmon, S., Hoyer, S., Osborn, H. P., Wilson, T. G., Georgieva, I. Y., Nowak, G., Luque, R., ... Winn, J. N. (2023). Discovery of TOI-1260d and the characterization of the multiplanet system. Monthly Notices of the Royal Astronomical Society, 519(1), 1437-1451. https://doi.org/10.1093/mnras/stac3639

@article{0dc56fb09e3146438ba74705e0bac633,

title = "Discovery of TOI-1260d and the characterization of the multiplanet system",

abstract = "We report the discovery of a third planet transiting the star TOI-1260, previously known to host two transiting sub-Neptune planets with orbital periods of 3.127 and 7.493 d, respectively. The nature of the third transiting planet with a 16.6-d orbit is supported by ground-based follow-up observations, including time-series photometry, high-angular resolution images, spectroscopy, and archival imagery. Precise photometric monitoring with CHEOPS allows to improve the constraints on the parameters of the system, improving our knowledge on their composition. The improved radii of TOI-1260b and TOI-1260c are 2.36 ± 0.06 R⊕, 2.82 ± 0.08 R⊕ , respectively while the newly discovered third planet has a radius of 3.09 ± 0.09 R⊕. The radius uncertainties are in the range of 3 per cent, allowing a precise interpretation of the interior structure of the three planets. Our planet interior composition model suggests that all three planets in the TOI-1260 system contains some fraction of gas. The innermost planet TOI-1260b has most likely lost all of its primordial hydrogen-dominated envelope. Planets c and d were also likely to have experienced significant loss of atmospheric through escape, but to a lesser extent compared to planet b.",

keywords = "Techniques: photometric, c, d, planets and satellites: composition, planets and satellites: detection, planets and satellites: individual: TOI-1260b, stars: individual: TOI-1260, techniques: radial velocities",

author = "Lam, {K. W.F.} and J. Cabrera and Hooton, {M. J.} and Y. Alibert and A. Bonfanti and M. Beck and A. Deline and Floren, {H. G.} and Simon, {A. E.} and L. Fossati and Persson, {C. M.} and M. Fridlund and S. Salmon and S. Hoyer and Osborn, {H. P.} and Wilson, {T. G.} and Georgieva, {I. Y.} and Gr Nowak and R. Luque and Egger, {J. A.} and V. Adibekyan and R. Alonso and Escude, {G. A.} and T. B{\'a}rczy and D. Barrado and Barros, {S. C.C.} and W. Baumjohann and T. Beck and A. Bekkelien and W. Benz and N. Billot and X. Bonfils and A. Brandeker and C. Broeg and S. Charnoz and Cameron, {A. C.} and Sz Csizmadia and Davies, {M. B.} and M. Deleuil and L. Delrez and Demangeon, {O. D.S.} and Demory, {B. O.} and D. Ehrenreich and A. Erikson and A. Fortier and D. Futyan and D. Gandolfi and M. Gillon and M. Guedel and P. Guterman and J. Laskar and Latham, {D. W.} and {Lecavelier Des Etangs}, A. and M. Lendl and C. Lovis and K. Heng and Isaak, {K. G.} and L. Kiss and D. Magrin and Maxted, {P. F.L.} and V. Nascimbeni and G. Olofsson and R. Ottensamer and I. Pagano and E. Palle and G. Peter and G. Piotto and D. Pollacco and D. Queloz and I. Ribas and R. Ragazzoni and N. Rando and H. Rauer and Santos, {N. C.} and G. Scandariato and S. Seager and D. Segransan and Serrano, {L. M.} and Smith, {A. M.S.} and Sousa, {S. G.} and M. Steller and Szab{\'o}, {G. M.} and N. Thomas and S. Udry and {Van Grootel}, V. and Walton, {N. A.} and Winn, {J. N.}",

note = "Publisher Copyright: {\textcopyright} 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2023",

month = feb,

day = "1",

doi = "10.1093/mnras/stac3639",

language = "English (US)",

volume = "519",

pages = "1437--1451",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

}

Lam, KWF, Cabrera, J, Hooton, MJ, Alibert, Y, Bonfanti, A, Beck, M, Deline, A, Floren, HG, Simon, AE, Fossati, L, Persson, CM, Fridlund, M, Salmon, S, Hoyer, S, Osborn, HP, Wilson, TG, Georgieva, IY, Nowak, G, Luque, R, Egger, JA, Adibekyan, V, Alonso, R, Escude, GA, Bárczy, T, Barrado, D, Barros, SCC, Baumjohann, W, Beck, T, Bekkelien, A, Benz, W, Billot, N, Bonfils, X, Brandeker, A, Broeg, C, Charnoz, S, Cameron, AC, Csizmadia, S, Davies, MB, Deleuil, M, Delrez, L, Demangeon, ODS, Demory, BO, Ehrenreich, D, Erikson, A, Fortier, A, Futyan, D, Gandolfi, D, Gillon, M, Guedel, M, Guterman, P, Laskar, J, Latham, DW, Lecavelier Des Etangs, A, Lendl, M, Lovis, C, Heng, K, Isaak, KG, Kiss, L, Magrin, D, Maxted, PFL, Nascimbeni, V, Olofsson, G, Ottensamer, R, Pagano, I, Palle, E, Peter, G, Piotto, G, Pollacco, D, Queloz, D, Ribas, I, Ragazzoni, R, Rando, N, Rauer, H, Santos, NC, Scandariato, G, Seager, S, Segransan, D, Serrano, LM, Smith, AMS, Sousa, SG, Steller, M, Szabó, GM, Thomas, N, Udry, S, Van Grootel, V, Walton, NA & Winn, JN 2023, 'Discovery of TOI-1260d and the characterization of the multiplanet system', Monthly Notices of the Royal Astronomical Society, vol. 519, no. 1, pp. 1437-1451. https://doi.org/10.1093/mnras/stac3639

TY - JOUR

T1 - Discovery of TOI-1260d and the characterization of the multiplanet system

AU - Lam, K. W.F.

AU - Cabrera, J.

AU - Hooton, M. J.

AU - Alibert, Y.

AU - Bonfanti, A.

AU - Beck, M.

AU - Deline, A.

AU - Floren, H. G.

AU - Simon, A. E.

AU - Fossati, L.

AU - Persson, C. M.

AU - Fridlund, M.

AU - Salmon, S.

AU - Hoyer, S.

AU - Osborn, H. P.

AU - Wilson, T. G.

AU - Georgieva, I. Y.

AU - Nowak, Gr

AU - Luque, R.

AU - Egger, J. A.

AU - Adibekyan, V.

AU - Alonso, R.

AU - Escude, G. A.

AU - Bárczy, T.

AU - Barrado, D.

AU - Barros, S. C.C.

AU - Baumjohann, W.

AU - Beck, T.

AU - Bekkelien, A.

AU - Benz, W.

AU - Billot, N.

AU - Bonfils, X.

AU - Brandeker, A.

AU - Broeg, C.

AU - Charnoz, S.

AU - Cameron, A. C.

AU - Csizmadia, Sz

AU - Davies, M. B.

AU - Deleuil, M.

AU - Delrez, L.

AU - Demangeon, O. D.S.

AU - Demory, B. O.

AU - Ehrenreich, D.

AU - Erikson, A.

AU - Fortier, A.

AU - Futyan, D.

AU - Gandolfi, D.

AU - Gillon, M.

AU - Guedel, M.

AU - Guterman, P.

AU - Laskar, J.

AU - Latham, D. W.

AU - Lecavelier Des Etangs, A.

AU - Lendl, M.

AU - Lovis, C.

AU - Heng, K.

AU - Isaak, K. G.

AU - Kiss, L.

AU - Magrin, D.

AU - Maxted, P. F.L.

AU - Nascimbeni, V.

AU - Olofsson, G.

AU - Ottensamer, R.

AU - Pagano, I.

AU - Palle, E.

AU - Peter, G.

AU - Piotto, G.

AU - Pollacco, D.

AU - Queloz, D.

AU - Ribas, I.

AU - Ragazzoni, R.

AU - Rando, N.

AU - Rauer, H.

AU - Santos, N. C.

AU - Scandariato, G.

AU - Seager, S.

AU - Segransan, D.

AU - Serrano, L. M.

AU - Smith, A. M.S.

AU - Sousa, S. G.

AU - Steller, M.

AU - Szabó, G. M.

AU - Thomas, N.

AU - Udry, S.

AU - Van Grootel, V.

AU - Walton, N. A.

AU - Winn, J. N.

PY - 2023/2/1

Y1 - 2023/2/1

N2 - We report the discovery of a third planet transiting the star TOI-1260, previously known to host two transiting sub-Neptune planets with orbital periods of 3.127 and 7.493 d, respectively. The nature of the third transiting planet with a 16.6-d orbit is supported by ground-based follow-up observations, including time-series photometry, high-angular resolution images, spectroscopy, and archival imagery. Precise photometric monitoring with CHEOPS allows to improve the constraints on the parameters of the system, improving our knowledge on their composition. The improved radii of TOI-1260b and TOI-1260c are 2.36 ± 0.06 R⊕, 2.82 ± 0.08 R⊕ , respectively while the newly discovered third planet has a radius of 3.09 ± 0.09 R⊕. The radius uncertainties are in the range of 3 per cent, allowing a precise interpretation of the interior structure of the three planets. Our planet interior composition model suggests that all three planets in the TOI-1260 system contains some fraction of gas. The innermost planet TOI-1260b has most likely lost all of its primordial hydrogen-dominated envelope. Planets c and d were also likely to have experienced significant loss of atmospheric through escape, but to a lesser extent compared to planet b.

AB - We report the discovery of a third planet transiting the star TOI-1260, previously known to host two transiting sub-Neptune planets with orbital periods of 3.127 and 7.493 d, respectively. The nature of the third transiting planet with a 16.6-d orbit is supported by ground-based follow-up observations, including time-series photometry, high-angular resolution images, spectroscopy, and archival imagery. Precise photometric monitoring with CHEOPS allows to improve the constraints on the parameters of the system, improving our knowledge on their composition. The improved radii of TOI-1260b and TOI-1260c are 2.36 ± 0.06 R⊕, 2.82 ± 0.08 R⊕ , respectively while the newly discovered third planet has a radius of 3.09 ± 0.09 R⊕. The radius uncertainties are in the range of 3 per cent, allowing a precise interpretation of the interior structure of the three planets. Our planet interior composition model suggests that all three planets in the TOI-1260 system contains some fraction of gas. The innermost planet TOI-1260b has most likely lost all of its primordial hydrogen-dominated envelope. Planets c and d were also likely to have experienced significant loss of atmospheric through escape, but to a lesser extent compared to planet b.

KW - Techniques: photometric

KW - c

KW - d

KW - planets and satellites: composition

KW - planets and satellites: detection

KW - planets and satellites: individual: TOI-1260b

KW - stars: individual: TOI-1260

KW - techniques: radial velocities

UR - http://www.scopus.com/inward/record.url?scp=85159271747&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85159271747&partnerID=8YFLogxK

U2 - 10.1093/mnras/stac3639

DO - 10.1093/mnras/stac3639

M3 - Article

AN - SCOPUS:85159271747

SN - 0035-8711

VL - 519

SP - 1437

EP - 1451

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

Discovery of TOI-1260d and the characterization of the multiplanet system

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