Discovery of TOI-1260d and the characterisation of the multi-planet system

Kristine W F Lam; J Cabrera; M J Hooton; Y Alibert; A Bonfanti; M Beck; A Deline; H-G Florén; 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 Abidekyan; R Alonso; G Anglada Escudé; 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 Collier 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 Pallé; G Peter; G Piotto; D Pollacco; D Queloz; I Ribas; R Ragazzoni; N Rando; H Rauer; N C Santos; G Scandariato; S Seager; D Ségransan; L M Serrano; A M S Smith; S G Sousa; M Steller; Gy 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 characterisation of the multi-planet system

Kristine W F Lam^*, J Cabrera, M J Hooton, Y Alibert, A Bonfanti, M Beck, A Deline, H-G Florén, 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 Abidekyan, R Alonso, G Anglada Escudé, 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 Collier 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 Pallé, G Peter, G Piotto, D Pollacco, D Queloz, I Ribas, R Ragazzoni, N Rando, H Rauer, N C Santos, G Scandariato, S Seager, D Ségransan, L M Serrano, A M S Smith, S G Sousa, M Steller, Gy M Szabó, N Thomas, S Udry, V Van Grootel, N A Walton, J N Winn

^*Corresponding author for this work

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

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 days, respectively. The nature of the third transiting planet with a 16.6-day 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, TOI-1260c are 2.36±0.06R_⊕⁠, 2.82±0.08R_⊕⁠, respectively while the newly discovered third planet has a radius of 3.09±0.09R_⊕⁠. The radius uncertainties are in the range of 3%, 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
Article number	stac3639
Pages (from-to)	1437–1451
Number of pages	15
Journal	Monthly Notices of the Royal Astronomical Society
Volume	519
Issue number	1
Early online date	12 Dec 2022
DOIs	https://doi.org/10.1093/mnras/stac3639
Publication status	Published - 1 Feb 2023

Keywords

Planets and satellites: detection
Planets and satellites: individual: TOI-1260b, c, d
Stars: individual: TOI-1260
Techniques: photometric
Techniques: radial velocities
Planets and satellites: composition
Stars: TOI-1260b

Access to Document

10.1093/mnras/stac3639

Lam-2022-Discovery-of-TOI-1260d-and-MNRAS-519-1-1437
Copyright © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1093/mnras/stac3639.
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AO2 - Professor Andrew Cameron: Project AO2 - Andrew Cameron
Cameron, A. C. (PI)
Science & Technology Facilities Council
1/04/21 → 31/03/24
Project: Standard
Astronomy at St Andrews 2018-2021: Astronomy at St Andrews 2018-2021
Jardine, M. M. (PI), Bonnell, I. A. (CoI), Cameron, A. C. (CoI), Cyganowski, C. J. (CoI), Dominik, M. (CoI), Helling, C. (CoI), Horne, K. D. (CoI), Scholz, A. (CoI), Tojeiro, R. (CoI), Weijmans, A.-M. (CoI), Wild, V. (CoI), Woitke, P. (CoI), Wood, K. (CoI) & Zhao, H. (CoI)
1/04/18 → 31/03/22
Project: Standard
Support for the PLATO Development: Support for the PLATO Development Phase 2017-2022: Planet candidate ranking and validation
Cameron, A. C. (PI)
Science & Technology Facilities Council
1/08/17 → 31/12/22
Project: Standard

Cite this

Lam, K. W. F., Cabrera, J., Hooton, M. J., Alibert, Y., Bonfanti, A., Beck, M., Deline, A., Florén, 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 characterisation of the multi-planet system. Monthly Notices of the Royal Astronomical Society, 519(1), 1437–1451. Article stac3639. https://doi.org/10.1093/mnras/stac3639

@article{6d0c3a5324e6478ba51271d80e6af45a,

title = "Discovery of TOI-1260d and the characterisation of the multi-planet 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 days, respectively. The nature of the third transiting planet with a 16.6-day 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, TOI-1260c are 2.36±0.06R⊕⁠, 2.82±0.08R⊕⁠, respectively while the newly discovered third planet has a radius of 3.09±0.09R⊕⁠. The radius uncertainties are in the range of 3%, 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 = "Planets and satellites: detection, Planets and satellites: individual: TOI-1260b, c, d, Stars: individual: TOI-1260, Techniques: photometric, Techniques: radial velocities, Planets and satellites: composition, Stars: TOI-1260b",

author = "Lam, {Kristine W F} and J Cabrera and Hooton, {M J} and Y Alibert and A Bonfanti and M Beck and A Deline and H-G Flor{\'e}n 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 Abidekyan and R Alonso and Escud{\'e}, {G Anglada} 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 Collier} and Sz Csizmadia and Davies, {M B} and M Deleuil and L Delrez and Demangeon, {O D S} and B-O Demory 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 Pall{\'e} 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 S{\'e}gransan and Serrano, {L M} and Smith, {A M S} and Sousa, {S G} and M Steller and Szab{\'o}, {Gy M} and N Thomas and S Udry and {Van Grootel}, V and Walton, {N A} and Winn, {J N}",

note = "Funding: ACC and TW acknowledge support from STFC consolidated grant numbers ST/R000824/1 and ST/V000861/1, and UKSA grant number ST/R003203/1.",

year = "2023",

month = feb,

day = "1",

doi = "10.1093/mnras/stac3639",

language = "English",

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, Florén, H-G, Simon, AE, Fossati, L, Persson, CM, Fridlund, M, Salmon, S, Hoyer, S, Osborn, HP, Wilson, TG, Georgieva, IY, Nowak, G, Luque, R, Egger, JA, Abidekyan, V, Alonso, R, Escudé, 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, B-O, 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, Pallé, E, Peter, G, Piotto, G, Pollacco, D, Queloz, D, Ribas, I, Ragazzoni, R, Rando, N, Rauer, H, Santos, NC, Scandariato, G, Seager, S, Ségransan, 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 characterisation of the multi-planet system', Monthly Notices of the Royal Astronomical Society, vol. 519, no. 1, stac3639, pp. 1437–1451. https://doi.org/10.1093/mnras/stac3639

TY - JOUR

T1 - Discovery of TOI-1260d and the characterisation of the multi-planet system

AU - Lam, Kristine W F

AU - Cabrera, J

AU - Hooton, M J

AU - Alibert, Y

AU - Bonfanti, A

AU - Beck, M

AU - Deline, A

AU - Florén, 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 - Abidekyan, V

AU - Alonso, R

AU - Escudé, G Anglada

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 Collier

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 - Pallé, 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 - Ségransan, D

AU - Serrano, L M

AU - Smith, A M S

AU - Sousa, S G

AU - Steller, M

AU - Szabó, Gy M

AU - Thomas, N

AU - Udry, S

AU - Van Grootel, V

AU - Walton, N A

AU - Winn, J N

N1 - Funding: ACC and TW acknowledge support from STFC consolidated grant numbers ST/R000824/1 and ST/V000861/1, and UKSA grant number ST/R003203/1.

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 days, respectively. The nature of the third transiting planet with a 16.6-day 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, TOI-1260c are 2.36±0.06R⊕⁠, 2.82±0.08R⊕⁠, respectively while the newly discovered third planet has a radius of 3.09±0.09R⊕⁠. The radius uncertainties are in the range of 3%, 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 days, respectively. The nature of the third transiting planet with a 16.6-day 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, TOI-1260c are 2.36±0.06R⊕⁠, 2.82±0.08R⊕⁠, respectively while the newly discovered third planet has a radius of 3.09±0.09R⊕⁠. The radius uncertainties are in the range of 3%, 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 - Planets and satellites: detection

KW - Planets and satellites: individual: TOI-1260b, c, d

KW - Stars: individual: TOI-1260

KW - Techniques: photometric

KW - Techniques: radial velocities

KW - Planets and satellites: composition

KW - Stars: TOI-1260b

U2 - 10.1093/mnras/stac3639

DO - 10.1093/mnras/stac3639

M3 - Article

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

M1 - stac3639

ER -

Discovery of TOI-1260d and the characterisation of the multi-planet system

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Keywords

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Projects

AO2 - Professor Andrew Cameron: Project AO2 - Andrew Cameron

Astronomy at St Andrews 2018-2021: Astronomy at St Andrews 2018-2021

Support for the PLATO Development: Support for the PLATO Development Phase 2017-2022: Planet candidate ranking and validation

Cite this