An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685

P. Bluhm; E. Palle; K. Molaverdikhani; J. Kemmer; A. P. Hatzes; D. Kossakowski; S. Stock; J. A. Caballero; J. Lillo-Box; V. J. S . Bejar; M. G. Soto; P. J. Amado; P. Brown; C. Cadieux; R. Cloutier; K. A. Collins; K. I. Collins; M. Cortes-Contreras; R. Doyon; S. Dreizler; N. Espinoza; A. Fukui; E. Gonzalez-Alvarez; Th Henning; K. Horne; S. V. Jeffers; J. M. Jenkins; E. L. N. Jensen; A. Kaminski; J. F. Kielkopf; N. Kusakabe; M. Kuerster; D. Lafreniere; R. Luque; F. Murgas; D. Montes; J. C. Morales; N. Narita; V. M. Passegger; A. Quirrenbach; P. Schoefer; S. Reffert; A. Reiners; I. Ribas; G. R. Ricker; S. Seager; A. Schweitzer; R. P. Schwarz; M. Tamura; T. Trifonov; R. Vanderspek; J. Winn; M. Zechmeister; M. R. Zapatero Osorio

doi:10.1051/0004-6361/202140688

An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685

P. Bluhm^*, E. Palle, K. Molaverdikhani, J. Kemmer, A. P. Hatzes, D. Kossakowski, S. Stock, J. A. Caballero, J. Lillo-Box, V. J. S . Bejar, M. G. Soto, P. J. Amado, P. Brown, C. Cadieux, R. Cloutier, K. A. Collins, K. I. Collins, M. Cortes-Contreras, R. Doyon, S. DreizlerN. Espinoza, A. Fukui, E. Gonzalez-Alvarez, Th Henning, K. Horne, S. V. Jeffers, J. M. Jenkins, E. L. N. Jensen, A. Kaminski, J. F. Kielkopf, N. Kusakabe, M. Kuerster, D. Lafreniere, R. Luque, F. Murgas, D. Montes, J. C. Morales, N. Narita, V. M. Passegger, A. Quirrenbach, P. Schoefer, S. Reffert, A. Reiners, I. Ribas, G. R. Ricker, S. Seager, A. Schweitzer, R. P. Schwarz, M. Tamura, T. Trifonov, R. Vanderspek, J. Winn, M. Zechmeister, M. R. Zapatero Osorio

^*Corresponding author for this work

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

Abstract

Dynamical histories of planetary systems, as well as the atmospheric evolution of highly irradiated planets, can be studied by characterizing the ultra-short-period planet population, which the TESS mission is particularly well suited to discover. Here, we report on the follow-up of a transit signal detected in the TESS sector 19 photometric time series of the M3.0 V star TOI-1685 (2MASS J04342248+4302148). We confirm the planetary nature of the transit signal, which has a period of P_b = 0.6691403_−0.0000021^+0.0000023 d, using precise radial velocity measurements taken with the CARMENES spectrograph. From the joint photometry and radial velocity analysis, we estimate the following parameters for TOI-1685 b: a mass of M_b = 3.78_−0.63^+0.63 M_⊕, a radius of R_b = 1.70_−0.07^+0.07 R_⊕, which together result in a bulk density of ρ_b = 4.21_−0.82^+0.95 g cm⁻³, and an equilibrium temperature of T_eq = 1069₋₁₆⁺¹⁶ K. TOI-1685 b is the least dense ultra-short-period planet around an M dwarf known to date. TOI-1685 b is also one of the hottest transiting super-Earth planets with accurate dynamical mass measurements, which makes it a particularly attractive target for thermal emission spectroscopy. Additionally, we report with moderate evidence an additional non-transiting planet candidate in the system, TOI-1685 [c], which has an orbital period of P_c = 9.02_−0.12^+0.10 d.

Original language	English
Article number	A78
Number of pages	17
Journal	Astronomy and Astrophysics
Volume	650
DOIs	https://doi.org/10.1051/0004-6361/202140688
Publication status	Published - 8 Jun 2021

Keywords

Techniques: photometric
Techniques: radial velocities
Stars: individual: TOI-1685
Stars: late-type

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10.1051/0004-6361/202140688

Bluhm-An-ultra-short-period-AA-650-A78
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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

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Bluhm, P., Palle, E., Molaverdikhani, K., Kemmer, J., Hatzes, A. P., Kossakowski, D., Stock, S., Caballero, J. A., Lillo-Box, J., Bejar, V. J. S. ., Soto, M. G., Amado, P. J., Brown, P., Cadieux, C., Cloutier, R., Collins, K. A., Collins, K. I., Cortes-Contreras, M., Doyon, R., ... Zapatero Osorio, M. R. (2021). An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685. Astronomy and Astrophysics, 650, Article A78. https://doi.org/10.1051/0004-6361/202140688

@article{fd762d5c527d458b8f13fa134892b670,

title = "An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685",

abstract = "Dynamical histories of planetary systems, as well as the atmospheric evolution of highly irradiated planets, can be studied by characterizing the ultra-short-period planet population, which the TESS mission is particularly well suited to discover. Here, we report on the follow-up of a transit signal detected in the TESS sector 19 photometric time series of the M3.0 V star TOI-1685 (2MASS J04342248+4302148). We confirm the planetary nature of the transit signal, which has a period of Pb = 0.6691403−0.0000021+0.0000023 d, using precise radial velocity measurements taken with the CARMENES spectrograph. From the joint photometry and radial velocity analysis, we estimate the following parameters for TOI-1685 b: a mass of Mb = 3.78−0.63+0.63 M⊕, a radius of Rb = 1.70−0.07+0.07 R⊕, which together result in a bulk density of ρb = 4.21−0.82+0.95 g cm−3, and an equilibrium temperature of Teq = 1069−16+16 K. TOI-1685 b is the least dense ultra-short-period planet around an M dwarf known to date. TOI-1685 b is also one of the hottest transiting super-Earth planets with accurate dynamical mass measurements, which makes it a particularly attractive target for thermal emission spectroscopy. Additionally, we report with moderate evidence an additional non-transiting planet candidate in the system, TOI-1685 [c], which has an orbital period of Pc = 9.02−0.12+0.10 d.",

keywords = "Techniques: photometric, Techniques: radial velocities, Stars: individual: TOI-1685, Stars: late-type",

author = "P. Bluhm and E. Palle and K. Molaverdikhani and J. Kemmer and Hatzes, {A. P.} and D. Kossakowski and S. Stock and Caballero, {J. A.} and J. Lillo-Box and Bejar, {V. J. S .} and Soto, {M. G.} and Amado, {P. J.} and P. Brown and C. Cadieux and R. Cloutier and Collins, {K. A.} and Collins, {K. I.} and M. Cortes-Contreras and R. Doyon and S. Dreizler and N. Espinoza and A. Fukui and E. Gonzalez-Alvarez and Th Henning and K. Horne and Jeffers, {S. V.} and Jenkins, {J. M.} and Jensen, {E. L. N.} and A. Kaminski and Kielkopf, {J. F.} and N. Kusakabe and M. Kuerster and D. Lafreniere and R. Luque and F. Murgas and D. Montes and Morales, {J. C.} and N. Narita and Passegger, {V. M.} and A. Quirrenbach and P. Schoefer and S. Reffert and A. Reiners and I. Ribas and Ricker, {G. R.} and S. Seager and A. Schweitzer and Schwarz, {R. P.} and M. Tamura and T. Trifonov and R. Vanderspek and J. Winn and M. Zechmeister and {Zapatero Osorio}, {M. R.}",

note = "Funding: We acknowledge financial support from the Agencia Estatal de Investigaci{\'o}n of the Ministerio de Ciencia, Innovaci{\'o}n y Universidades and the ERDF through projects PID2019-109522GB-C5[1:4]/AEI/10.13039/501100011033, PGC2018-098153-B-C33, and the Centre of Excellence “Severo Ochoa” and “Mar{\'i}a deMaeztu” awards to the Instituto de Astrof{\'i}sica de Canarias (SEV-2015-0548), Instituto de Astrof{\'i}sica de Andaluc{\'i}a (SEV-2017-0709), and Centro de Astro-biolog{\'i}a (MDM-2017-0737), the Generalitat de Catalunya/CERCA programme,“la Caixa” Foundation (100010434), European Union{\textquoteright}s Horizon 2020 research and innovation programme under the Marie Sk{\l}odowska-Curie grant agreement No. 847648 (LCF/BQ/PI20/11760023), a University Research Support Grant from the National Astronomical Observatory of Japan, JSPS KAKENHI (JP15H02063, JP18H01265, JP18H05439, JP18H05442, and JP22000005), JSTPRESTO (JPMJPR1775), UK Science and Technology Facilities Council (ST/R000824/1), and NASA (NNX17AG24G).",

year = "2021",

month = jun,

day = "8",

doi = "10.1051/0004-6361/202140688",

language = "English",

volume = "650",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP SCIENCES S A",

}

Bluhm, P, Palle, E, Molaverdikhani, K, Kemmer, J, Hatzes, AP, Kossakowski, D, Stock, S, Caballero, JA, Lillo-Box, J, Bejar, VJS, Soto, MG, Amado, PJ, Brown, P, Cadieux, C, Cloutier, R, Collins, KA, Collins, KI, Cortes-Contreras, M, Doyon, R, Dreizler, S, Espinoza, N, Fukui, A, Gonzalez-Alvarez, E, Henning, T, Horne, K, Jeffers, SV, Jenkins, JM, Jensen, ELN, Kaminski, A, Kielkopf, JF, Kusakabe, N, Kuerster, M, Lafreniere, D, Luque, R, Murgas, F, Montes, D, Morales, JC, Narita, N, Passegger, VM, Quirrenbach, A, Schoefer, P, Reffert, S, Reiners, A, Ribas, I, Ricker, GR, Seager, S, Schweitzer, A, Schwarz, RP, Tamura, M, Trifonov, T, Vanderspek, R, Winn, J, Zechmeister, M & Zapatero Osorio, MR 2021, 'An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685', Astronomy and Astrophysics, vol. 650, A78. https://doi.org/10.1051/0004-6361/202140688

TY - JOUR

T1 - An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685

AU - Bluhm, P.

AU - Palle, E.

AU - Molaverdikhani, K.

AU - Kemmer, J.

AU - Hatzes, A. P.

AU - Kossakowski, D.

AU - Stock, S.

AU - Caballero, J. A.

AU - Lillo-Box, J.

AU - Bejar, V. J. S .

AU - Soto, M. G.

AU - Amado, P. J.

AU - Brown, P.

AU - Cadieux, C.

AU - Cloutier, R.

AU - Collins, K. A.

AU - Collins, K. I.

AU - Cortes-Contreras, M.

AU - Doyon, R.

AU - Dreizler, S.

AU - Espinoza, N.

AU - Fukui, A.

AU - Gonzalez-Alvarez, E.

AU - Henning, Th

AU - Horne, K.

AU - Jeffers, S. V.

AU - Jenkins, J. M.

AU - Jensen, E. L. N.

AU - Kaminski, A.

AU - Kielkopf, J. F.

AU - Kusakabe, N.

AU - Kuerster, M.

AU - Lafreniere, D.

AU - Luque, R.

AU - Murgas, F.

AU - Montes, D.

AU - Morales, J. C.

AU - Narita, N.

AU - Passegger, V. M.

AU - Quirrenbach, A.

AU - Schoefer, P.

AU - Reffert, S.

AU - Reiners, A.

AU - Ribas, I.

AU - Ricker, G. R.

AU - Seager, S.

AU - Schweitzer, A.

AU - Schwarz, R. P.

AU - Tamura, M.

AU - Trifonov, T.

AU - Vanderspek, R.

AU - Winn, J.

AU - Zechmeister, M.

AU - Zapatero Osorio, M. R.

N1 - Funding: We acknowledge financial support from the Agencia Estatal de Investigación of the Ministerio de Ciencia, Innovación y Universidades and the ERDF through projects PID2019-109522GB-C5[1:4]/AEI/10.13039/501100011033, PGC2018-098153-B-C33, and the Centre of Excellence “Severo Ochoa” and “María deMaeztu” awards to the Instituto de Astrofísica de Canarias (SEV-2015-0548), Instituto de Astrofísica de Andalucía (SEV-2017-0709), and Centro de Astro-biología (MDM-2017-0737), the Generalitat de Catalunya/CERCA programme,“la Caixa” Foundation (100010434), European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 847648 (LCF/BQ/PI20/11760023), a University Research Support Grant from the National Astronomical Observatory of Japan, JSPS KAKENHI (JP15H02063, JP18H01265, JP18H05439, JP18H05442, and JP22000005), JSTPRESTO (JPMJPR1775), UK Science and Technology Facilities Council (ST/R000824/1), and NASA (NNX17AG24G).

PY - 2021/6/8

Y1 - 2021/6/8

N2 - Dynamical histories of planetary systems, as well as the atmospheric evolution of highly irradiated planets, can be studied by characterizing the ultra-short-period planet population, which the TESS mission is particularly well suited to discover. Here, we report on the follow-up of a transit signal detected in the TESS sector 19 photometric time series of the M3.0 V star TOI-1685 (2MASS J04342248+4302148). We confirm the planetary nature of the transit signal, which has a period of Pb = 0.6691403−0.0000021+0.0000023 d, using precise radial velocity measurements taken with the CARMENES spectrograph. From the joint photometry and radial velocity analysis, we estimate the following parameters for TOI-1685 b: a mass of Mb = 3.78−0.63+0.63 M⊕, a radius of Rb = 1.70−0.07+0.07 R⊕, which together result in a bulk density of ρb = 4.21−0.82+0.95 g cm−3, and an equilibrium temperature of Teq = 1069−16+16 K. TOI-1685 b is the least dense ultra-short-period planet around an M dwarf known to date. TOI-1685 b is also one of the hottest transiting super-Earth planets with accurate dynamical mass measurements, which makes it a particularly attractive target for thermal emission spectroscopy. Additionally, we report with moderate evidence an additional non-transiting planet candidate in the system, TOI-1685 [c], which has an orbital period of Pc = 9.02−0.12+0.10 d.

AB - Dynamical histories of planetary systems, as well as the atmospheric evolution of highly irradiated planets, can be studied by characterizing the ultra-short-period planet population, which the TESS mission is particularly well suited to discover. Here, we report on the follow-up of a transit signal detected in the TESS sector 19 photometric time series of the M3.0 V star TOI-1685 (2MASS J04342248+4302148). We confirm the planetary nature of the transit signal, which has a period of Pb = 0.6691403−0.0000021+0.0000023 d, using precise radial velocity measurements taken with the CARMENES spectrograph. From the joint photometry and radial velocity analysis, we estimate the following parameters for TOI-1685 b: a mass of Mb = 3.78−0.63+0.63 M⊕, a radius of Rb = 1.70−0.07+0.07 R⊕, which together result in a bulk density of ρb = 4.21−0.82+0.95 g cm−3, and an equilibrium temperature of Teq = 1069−16+16 K. TOI-1685 b is the least dense ultra-short-period planet around an M dwarf known to date. TOI-1685 b is also one of the hottest transiting super-Earth planets with accurate dynamical mass measurements, which makes it a particularly attractive target for thermal emission spectroscopy. Additionally, we report with moderate evidence an additional non-transiting planet candidate in the system, TOI-1685 [c], which has an orbital period of Pc = 9.02−0.12+0.10 d.

KW - Techniques: photometric

KW - Techniques: radial velocities

KW - Stars: individual: TOI-1685

KW - Stars: late-type

U2 - 10.1051/0004-6361/202140688

DO - 10.1051/0004-6361/202140688

M3 - Article

SN - 0004-6361

VL - 650

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A78

ER -

An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685

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