The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc

R. Luque; B. J. Fulton; M. Kunimoto; P. J. Amado; P. Gorrini; S. Dreizler; C. Hellier; G. W. Henry; K. Molaverdikhani; G. Morello; L. Peña-Moñino; M. Pérez-Torres; F. J. Pozuelos; Y. Shan; G. Anglada-Escudé; V. J.S. Béjar; G. Bergond; A. W. Boyle; J. A. Caballero; D. Charbonneau; D. R. Ciardi; S. Dufoer; N. Espinoza; M. Everett; D. Fischer; A. P. Hatzes; Th Henning; K. Hesse; A. W. Howard; S. B. Howell; H. Isaacson; S. V. Jeffers; J. M. Jenkins; S. R. Kane; J. Kemmer; S. Khalafinejad; R. C. Kidwell; D. Kossakowski; D. W. Latham; J. Lillo-Box; J. J. Lissauer; D. Montes; J. Orell-Miquel; E. Pallé; D. Pollacco; A. Quirrenbach; S. Reffert; A. Reiners; I. Ribas; G. R. Ricker; L. A. Rogers; J. Sanz-Forcada; M. Schlecker; A. Schweitzer; S. Seager; A. Shporer; K. G. Stassun; S. Stock; L. Tal-Or; E. B. Ting; T. Trifonov; S. Vanaverbeke; R. Vanderspek; J. Villaseñor; J. N. Winn; J. G. Winters; M. R. Zapatero Osorio

doi:10.1051/0004-6361/202243834

The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc

R. Luque, B. J. Fulton, M. Kunimoto, P. J. Amado, P. Gorrini, S. Dreizler, C. Hellier, G. W. Henry, K. Molaverdikhani, G. Morello, L. Peña-Moñino, M. Pérez-Torres, F. J. Pozuelos, Y. Shan, G. Anglada-Escudé, V. J.S. Béjar, G. Bergond, A. W. Boyle, J. A. Caballero, D. CharbonneauD. R. Ciardi, S. Dufoer, N. Espinoza, M. Everett, D. Fischer, A. P. Hatzes, Th Henning, K. Hesse, A. W. Howard, S. B. Howell, H. Isaacson, S. V. Jeffers, J. M. Jenkins, S. R. Kane, J. Kemmer, S. Khalafinejad, R. C. Kidwell, D. Kossakowski, D. W. Latham, J. Lillo-Box, J. J. Lissauer, D. Montes, J. Orell-Miquel, E. Pallé, D. Pollacco, A. Quirrenbach, S. Reffert, A. Reiners, I. Ribas, G. R. Ricker, L. A. Rogers, J. Sanz-Forcada, M. Schlecker, A. Schweitzer, S. Seager, A. Shporer, K. G. Stassun, S. Stock, L. Tal-Or, E. B. Ting, T. Trifonov, S. Vanaverbeke, R. Vanderspek, J. Villaseñor, J. N. Winn, J. G. Winters, M. R. Zapatero Osorio

Astrophysical Sciences

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Abstract

We report the discovery of a multiplanetary system transiting the M0 V dwarf HD 260655 (GJ 239, TOI-4599). The system consists of at least two transiting planets, namely HD 260655 b, with a period of 2.77 d, a radius of R_b = 1.240 ± 0.023 R_⊕, a mass of M_b = 2.14 ± 0.34 M_⊕, and a bulk density of ρ_b = 6.2 ± 1.0 g cm^-3, and HD 260655 c, with a period of 5.71 d, a radius of R_c = 1.533^+0.051_-0.046 R_⊕, a mass of M_c = 3.09 ± 0.48 M_⊕, and a bulk density of ρ_c = 4.7^+0.9_-0.8 g cm^-3. The planets have been detected in transit by the Transiting Exoplanet Survey Satellite (TESS) mission and confirmed independently with archival and new precise radial velocities obtained with the HIRES and CARMENES instruments since 1998 and 2016, respectively. At a distance of 10 pc, HD 260655 has become the fourth closest known multitransiting planet system after HD 219134, LTT 1445 A, and AU Mic. Due to the apparent brightness of the host star (J = 6.7 mag), both planets are among the most suitable rocky worlds known today for atmospheric studies with the James Webb Space Telescope, both in transmission and emission.

Original language	English (US)
Article number	A199
Journal	Astronomy and Astrophysics
Volume	664
DOIs	https://doi.org/10.1051/0004-6361/202243834
State	Published - Aug 2022

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

planetary systems
planets
satellites: individual: HD 260655
stars: late-type
techniques: photometric
techniques: radial velocities

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10.1051/0004-6361/202243834

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Luque, R., Fulton, B. J., Kunimoto, M., Amado, P. J., Gorrini, P., Dreizler, S., Hellier, C., Henry, G. W., Molaverdikhani, K., Morello, G., Peña-Moñino, L., Pérez-Torres, M., Pozuelos, F. J., Shan, Y., Anglada-Escudé, G., Béjar, V. J. S., Bergond, G., Boyle, A. W., Caballero, J. A., ... Zapatero Osorio, M. R. (2022). The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc. Astronomy and Astrophysics, 664, Article A199. https://doi.org/10.1051/0004-6361/202243834

@article{1b9cca97569448cebad5412c089b441b,

title = "The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc",

abstract = "We report the discovery of a multiplanetary system transiting the M0 V dwarf HD 260655 (GJ 239, TOI-4599). The system consists of at least two transiting planets, namely HD 260655 b, with a period of 2.77 d, a radius of Rb = 1.240 ± 0.023 R⊕, a mass of Mb = 2.14 ± 0.34 M⊕, and a bulk density of ρb = 6.2 ± 1.0 g cm-3, and HD 260655 c, with a period of 5.71 d, a radius of Rc = 1.533+0.051-0.046 R⊕, a mass of Mc = 3.09 ± 0.48 M⊕, and a bulk density of ρc = 4.7+0.9-0.8 g cm-3. The planets have been detected in transit by the Transiting Exoplanet Survey Satellite (TESS) mission and confirmed independently with archival and new precise radial velocities obtained with the HIRES and CARMENES instruments since 1998 and 2016, respectively. At a distance of 10 pc, HD 260655 has become the fourth closest known multitransiting planet system after HD 219134, LTT 1445 A, and AU Mic. Due to the apparent brightness of the host star (J = 6.7 mag), both planets are among the most suitable rocky worlds known today for atmospheric studies with the James Webb Space Telescope, both in transmission and emission.",

keywords = "planetary systems, planets, satellites: individual: HD 260655, stars: late-type, techniques: photometric, techniques: radial velocities",

author = "R. Luque and Fulton, {B. J.} and M. Kunimoto and Amado, {P. J.} and P. Gorrini and S. Dreizler and C. Hellier and Henry, {G. W.} and K. Molaverdikhani and G. Morello and L. Pe{\~n}a-Mo{\~n}ino and M. P{\'e}rez-Torres and Pozuelos, {F. J.} and Y. Shan and G. Anglada-Escud{\'e} and B{\'e}jar, {V. J.S.} and G. Bergond and Boyle, {A. W.} and Caballero, {J. A.} and D. Charbonneau and Ciardi, {D. R.} and S. Dufoer and N. Espinoza and M. Everett and D. Fischer and Hatzes, {A. P.} and Th Henning and K. Hesse and Howard, {A. W.} and Howell, {S. B.} and H. Isaacson and Jeffers, {S. V.} and Jenkins, {J. M.} and Kane, {S. R.} and J. Kemmer and S. Khalafinejad and Kidwell, {R. C.} and D. Kossakowski and Latham, {D. W.} and J. Lillo-Box and Lissauer, {J. J.} and D. Montes and J. Orell-Miquel and E. Pall{\'e} and D. Pollacco and A. Quirrenbach and S. Reffert and A. Reiners and I. Ribas and Ricker, {G. R.} and Rogers, {L. A.} and J. Sanz-Forcada and M. Schlecker and A. Schweitzer and S. Seager and A. Shporer and Stassun, {K. G.} and S. Stock and L. Tal-Or and Ting, {E. B.} and T. Trifonov and S. Vanaverbeke and R. Vanderspek and J. Villase{\~n}or and Winn, {J. N.} and Winters, {J. G.} and {Zapatero Osorio}, {M. R.}",

note = "Publisher Copyright: {\textcopyright} R. Luque et al. 2022.",

year = "2022",

month = aug,

doi = "10.1051/0004-6361/202243834",

language = "English (US)",

volume = "664",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Luque, R, Fulton, BJ, Kunimoto, M, Amado, PJ, Gorrini, P, Dreizler, S, Hellier, C, Henry, GW, Molaverdikhani, K, Morello, G, Peña-Moñino, L, Pérez-Torres, M, Pozuelos, FJ, Shan, Y, Anglada-Escudé, G, Béjar, VJS, Bergond, G, Boyle, AW, Caballero, JA, Charbonneau, D, Ciardi, DR, Dufoer, S, Espinoza, N, Everett, M, Fischer, D, Hatzes, AP, Henning, T, Hesse, K, Howard, AW, Howell, SB, Isaacson, H, Jeffers, SV, Jenkins, JM, Kane, SR, Kemmer, J, Khalafinejad, S, Kidwell, RC, Kossakowski, D, Latham, DW, Lillo-Box, J, Lissauer, JJ, Montes, D, Orell-Miquel, J, Pallé, E, Pollacco, D, Quirrenbach, A, Reffert, S, Reiners, A, Ribas, I, Ricker, GR, Rogers, LA, Sanz-Forcada, J, Schlecker, M, Schweitzer, A, Seager, S, Shporer, A, Stassun, KG, Stock, S, Tal-Or, L, Ting, EB, Trifonov, T, Vanaverbeke, S, Vanderspek, R, Villaseñor, J, Winn, JN, Winters, JG & Zapatero Osorio, MR 2022, 'The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc', Astronomy and Astrophysics, vol. 664, A199. https://doi.org/10.1051/0004-6361/202243834

TY - JOUR

T1 - The HD 260655 system

T2 - Two rocky worlds transiting a bright M dwarf at 10 pc

AU - Luque, R.

AU - Fulton, B. J.

AU - Kunimoto, M.

AU - Amado, P. J.

AU - Gorrini, P.

AU - Dreizler, S.

AU - Hellier, C.

AU - Henry, G. W.

AU - Molaverdikhani, K.

AU - Morello, G.

AU - Peña-Moñino, L.

AU - Pérez-Torres, M.

AU - Pozuelos, F. J.

AU - Shan, Y.

AU - Anglada-Escudé, G.

AU - Béjar, V. J.S.

AU - Bergond, G.

AU - Boyle, A. W.

AU - Caballero, J. A.

AU - Charbonneau, D.

AU - Ciardi, D. R.

AU - Dufoer, S.

AU - Espinoza, N.

AU - Everett, M.

AU - Fischer, D.

AU - Hatzes, A. P.

AU - Henning, Th

AU - Hesse, K.

AU - Howard, A. W.

AU - Howell, S. B.

AU - Isaacson, H.

AU - Jeffers, S. V.

AU - Jenkins, J. M.

AU - Kane, S. R.

AU - Kemmer, J.

AU - Khalafinejad, S.

AU - Kidwell, R. C.

AU - Kossakowski, D.

AU - Latham, D. W.

AU - Lillo-Box, J.

AU - Lissauer, J. J.

AU - Montes, D.

AU - Orell-Miquel, J.

AU - Pallé, E.

AU - Pollacco, D.

AU - Quirrenbach, A.

AU - Reffert, S.

AU - Reiners, A.

AU - Ribas, I.

AU - Ricker, G. R.

AU - Rogers, L. A.

AU - Sanz-Forcada, J.

AU - Schlecker, M.

AU - Schweitzer, A.

AU - Seager, S.

AU - Shporer, A.

AU - Stassun, K. G.

AU - Stock, S.

AU - Tal-Or, L.

AU - Ting, E. B.

AU - Trifonov, T.

AU - Vanaverbeke, S.

AU - Vanderspek, R.

AU - Villaseñor, J.

AU - Winn, J. N.

AU - Winters, J. G.

AU - Zapatero Osorio, M. R.

PY - 2022/8

Y1 - 2022/8

N2 - We report the discovery of a multiplanetary system transiting the M0 V dwarf HD 260655 (GJ 239, TOI-4599). The system consists of at least two transiting planets, namely HD 260655 b, with a period of 2.77 d, a radius of Rb = 1.240 ± 0.023 R⊕, a mass of Mb = 2.14 ± 0.34 M⊕, and a bulk density of ρb = 6.2 ± 1.0 g cm-3, and HD 260655 c, with a period of 5.71 d, a radius of Rc = 1.533+0.051-0.046 R⊕, a mass of Mc = 3.09 ± 0.48 M⊕, and a bulk density of ρc = 4.7+0.9-0.8 g cm-3. The planets have been detected in transit by the Transiting Exoplanet Survey Satellite (TESS) mission and confirmed independently with archival and new precise radial velocities obtained with the HIRES and CARMENES instruments since 1998 and 2016, respectively. At a distance of 10 pc, HD 260655 has become the fourth closest known multitransiting planet system after HD 219134, LTT 1445 A, and AU Mic. Due to the apparent brightness of the host star (J = 6.7 mag), both planets are among the most suitable rocky worlds known today for atmospheric studies with the James Webb Space Telescope, both in transmission and emission.

AB - We report the discovery of a multiplanetary system transiting the M0 V dwarf HD 260655 (GJ 239, TOI-4599). The system consists of at least two transiting planets, namely HD 260655 b, with a period of 2.77 d, a radius of Rb = 1.240 ± 0.023 R⊕, a mass of Mb = 2.14 ± 0.34 M⊕, and a bulk density of ρb = 6.2 ± 1.0 g cm-3, and HD 260655 c, with a period of 5.71 d, a radius of Rc = 1.533+0.051-0.046 R⊕, a mass of Mc = 3.09 ± 0.48 M⊕, and a bulk density of ρc = 4.7+0.9-0.8 g cm-3. The planets have been detected in transit by the Transiting Exoplanet Survey Satellite (TESS) mission and confirmed independently with archival and new precise radial velocities obtained with the HIRES and CARMENES instruments since 1998 and 2016, respectively. At a distance of 10 pc, HD 260655 has become the fourth closest known multitransiting planet system after HD 219134, LTT 1445 A, and AU Mic. Due to the apparent brightness of the host star (J = 6.7 mag), both planets are among the most suitable rocky worlds known today for atmospheric studies with the James Webb Space Telescope, both in transmission and emission.

KW - planetary systems

KW - planets

KW - satellites: individual: HD 260655

KW - stars: late-type

KW - techniques: photometric

KW - techniques: radial velocities

UR - http://www.scopus.com/inward/record.url?scp=85139830657&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85139830657&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/202243834

DO - 10.1051/0004-6361/202243834

M3 - Article

AN - SCOPUS:85139830657

SN - 0004-6361

VL - 664

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A199

ER -

The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc

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