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

P. Bluhm; E. Pallé; K. Molaverdikhani; J. Kemmer; A. P. Hatzes; D. Kossakowski; S. Stock; J. A. Caballero; J. Lillo-Box; V. J.S. Béjar; M. G. Soto; P. J. Amado; P. Brown; C. Cadieux; R. Cloutier; K. A. Collins; K. I. Collins; M. Cortés-Contreras; R. Doyon; S. Dreizler; N. Espinoza; A. Fukui; E. González-Álvarez; Th Henning; K. Horne; S. V. Jeffers; J. M. Jenkins; E. L.N. Jensen; A. Kaminski; J. F. Kielkopf; N. Kusakabe; M. Kürster; D. Lafrenière; R. Luque; F. Murgas; D. Montes; J. C. Morales; N. Narita; V. M. Passegger; A. Quirrenbach; P. Schöfer; 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. Pallé, K. Molaverdikhani, J. Kemmer, A. P. Hatzes, D. Kossakowski, S. Stock, J. A. Caballero, J. Lillo-Box, V. J.S. Béjar, M. G. Soto, P. J. Amado, P. Brown, C. Cadieux, R. Cloutier, K. A. Collins, K. I. Collins, M. Cortés-Contreras, R. Doyon, S. DreizlerN. Espinoza, A. Fukui, E. González-Álvarez, Th Henning, K. Horne, S. V. Jeffers, J. M. Jenkins, E. L.N. Jensen, A. Kaminski, J. F. Kielkopf, N. Kusakabe, M. Kürster, D. Lafrenière, R. Luque, F. Murgas, D. Montes, J. C. Morales, N. Narita, V. M. Passegger, A. Quirrenbach, P. Schöfer, 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

Astrophysical Sciences

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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.

Original language	English (US)
Article number	A78
Journal	Astronomy and Astrophysics
Volume	650
DOIs	https://doi.org/10.1051/0004-6361/202140688
State	Published - Jun 1 2021

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

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

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10.1051/0004-6361/202140688

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Bluhm, P., Pallé, E., Molaverdikhani, K., Kemmer, J., Hatzes, A. P., Kossakowski, D., Stock, S., Caballero, J. A., Lillo-Box, J., Béjar, V. J. S., Soto, M. G., Amado, P. J., Brown, P., Cadieux, C., Cloutier, R., Collins, K. A., Collins, K. I., Cortés-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{9b034b37213b4f66804a022b0ef503fb,

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

author = "P. Bluhm and E. Pall{\'e} 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 B{\'e}jar, {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. Cort{\'e}s-Contreras and R. Doyon and S. Dreizler and N. Espinoza and A. Fukui and E. Gonz{\'a}lez-{\'A}lvarez 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. K{\"u}rster and D. Lafreni{\`e}re 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. Sch{\"o}fer 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 = "Publisher Copyright: {\textcopyright} ESO 2021.",

year = "2021",

month = jun,

day = "1",

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

language = "English (US)",

volume = "650",

journal = "Astronomy and Astrophysics",

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Bluhm, P, Pallé, E, Molaverdikhani, K, Kemmer, J, Hatzes, AP, Kossakowski, D, Stock, S, Caballero, JA, Lillo-Box, J, Béjar, VJS, Soto, MG, Amado, PJ, Brown, P, Cadieux, C, Cloutier, R, Collins, KA, Collins, KI, Cortés-Contreras, M, Doyon, R, Dreizler, S, Espinoza, N, Fukui, A, González-Álvarez, E, Henning, T, Horne, K, Jeffers, SV, Jenkins, JM, Jensen, ELN, Kaminski, A, Kielkopf, JF, Kusakabe, N, Kürster, M, Lafrenière, D, Luque, R, Murgas, F, Montes, D, Morales, JC, Narita, N, Passegger, VM, Quirrenbach, A, Schöfer, 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 - Pallé, 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 - Béjar, 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 - Cortés-Contreras, M.

AU - Doyon, R.

AU - Dreizler, S.

AU - Espinoza, N.

AU - Fukui, A.

AU - González-Álvarez, 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 - Kürster, M.

AU - Lafrenière, 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 - Schöfer, 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.

PY - 2021/6/1

Y1 - 2021/6/1

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 - Stars: individual: TOI-1685

KW - Stars: late-type

KW - Techniques: photometric

KW - Techniques: radial velocities

UR - http://www.scopus.com/inward/record.url?scp=85107733603&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85107733603&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/202140688

DO - 10.1051/0004-6361/202140688

M3 - Article

AN - SCOPUS:85107733603

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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