RedDots: Planetary masses in the GJ1061 system from planet-planet interaction

S. Dreizler; S. V. Jeffers; F. Liebing; P. Gorrini; C. A. Haswell; E. Gaidos; J. R. Barnes; F. Del Sordo; H. R. A. Jones; E. Rodríguez; Y. Tsapras

doi:10.1051/0004-6361/202452490

RedDots: Planetary masses in the GJ1061 system from planet-planet interaction

S. Dreizler, S. V. Jeffers, F. Liebing, P. Gorrini, C. A. Haswell, E. Gaidos, J. R. Barnes, F. Del Sordo, H. R. A. Jones, E. Rodríguez, Y. Tsapras

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Abstract

GJ1061 is a very nearby M star hosting three low-mass temperate planets detected from radial velocity variations. The close to 4:2:1 period commensurability of the planets, the available long-term monitoring of the system and new very high-precision radial velocity measurements from ESPRESSO enable the determination of masses from the planet-planet interaction. Using nested sampling, we derived parameter distributions for a co-planar configuration. The three planets (Mb =1.07 +- 0.11M_Earth, Pb =3.2073 +- 0.0003 d, Mc=1.76 +- 0.13M_Earth, Pc=6.6821 +- 0.0008 d, Md =1.55 +- 0.17M_Earth, Pd =13.066 +- 0.002 d) are potentially all rocky with equilibrium temperatures between 360 K and 240 K. This makes the GJ1061 system one of the prime targets for future ground or space based instruments suitable for a direct detection of the planetary atmospheres.

Original language	English
Article number	A114
Pages (from-to)	1-16
Number of pages	16
Journal	Astronomy & Astrophysics
Volume	698
Issue number	June 2025
Early online date	6 Jun 2025
DOIs	https://doi.org/10.1051/0004-6361/202452490
Publication status	E-pub ahead of print - 6 Jun 2025

Keywords

astro-ph.EP
astro-ph.SR

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10.1051/0004-6361/202452490Licence: CC BY

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© 2025 The Author(s). Published by EDP Sciences. This is an open access article distributed under the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/
Final published version, 7.63 MBLicence: CC BY

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Dreizler, S., Jeffers, S. V., Liebing, F., Gorrini, P., Haswell, C. A., Gaidos, E., Barnes, J. R., Sordo, F. D., Jones, H. R. A., Rodríguez, E., & Tsapras, Y. (2025). RedDots: Planetary masses in the GJ1061 system from planet-planet interaction. Astronomy & Astrophysics, 698(June 2025), 1-16. Article A114. Advance online publication. https://doi.org/10.1051/0004-6361/202452490

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title = "RedDots: Planetary masses in the GJ1061 system from planet-planet interaction",

abstract = " GJ1061 is a very nearby M star hosting three low-mass temperate planets detected from radial velocity variations. The close to 4:2:1 period commensurability of the planets, the available long-term monitoring of the system and new very high-precision radial velocity measurements from ESPRESSO enable the determination of masses from the planet-planet interaction. Using nested sampling, we derived parameter distributions for a co-planar configuration. The three planets (Mb =1.07 +- 0.11M\_Earth, Pb =3.2073 +- 0.0003 d, Mc=1.76 +- 0.13M\_Earth, Pc=6.6821 +- 0.0008 d, Md =1.55 +- 0.17M\_Earth, Pd =13.066 +- 0.002 d) are potentially all rocky with equilibrium temperatures between 360 K and 240 K. This makes the GJ1061 system one of the prime targets for future ground or space based instruments suitable for a direct detection of the planetary atmospheres. ",

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author = "S. Dreizler and Jeffers, \{S. V.\} and F. Liebing and P. Gorrini and Haswell, \{C. A.\} and E. Gaidos and Barnes, \{J. R.\} and Sordo, \{F. Del\} and Jones, \{H. R. A.\} and E. Rodr{\'i}guez and Y. Tsapras",

note = "{\textcopyright} 2025 The Author(s). Published by EDP Sciences. This is an open access article distributed under the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/ ",

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doi = "10.1051/0004-6361/202452490",

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AU - Dreizler, S.

AU - Jeffers, S. V.

AU - Liebing, F.

AU - Gorrini, P.

AU - Haswell, C. A.

AU - Gaidos, E.

AU - Barnes, J. R.

AU - Sordo, F. Del

AU - Jones, H. R. A.

AU - Rodríguez, E.

AU - Tsapras, Y.

PY - 2025/6/6

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N2 - GJ1061 is a very nearby M star hosting three low-mass temperate planets detected from radial velocity variations. The close to 4:2:1 period commensurability of the planets, the available long-term monitoring of the system and new very high-precision radial velocity measurements from ESPRESSO enable the determination of masses from the planet-planet interaction. Using nested sampling, we derived parameter distributions for a co-planar configuration. The three planets (Mb =1.07 +- 0.11M_Earth, Pb =3.2073 +- 0.0003 d, Mc=1.76 +- 0.13M_Earth, Pc=6.6821 +- 0.0008 d, Md =1.55 +- 0.17M_Earth, Pd =13.066 +- 0.002 d) are potentially all rocky with equilibrium temperatures between 360 K and 240 K. This makes the GJ1061 system one of the prime targets for future ground or space based instruments suitable for a direct detection of the planetary atmospheres.

AB - GJ1061 is a very nearby M star hosting three low-mass temperate planets detected from radial velocity variations. The close to 4:2:1 period commensurability of the planets, the available long-term monitoring of the system and new very high-precision radial velocity measurements from ESPRESSO enable the determination of masses from the planet-planet interaction. Using nested sampling, we derived parameter distributions for a co-planar configuration. The three planets (Mb =1.07 +- 0.11M_Earth, Pb =3.2073 +- 0.0003 d, Mc=1.76 +- 0.13M_Earth, Pc=6.6821 +- 0.0008 d, Md =1.55 +- 0.17M_Earth, Pd =13.066 +- 0.002 d) are potentially all rocky with equilibrium temperatures between 360 K and 240 K. This makes the GJ1061 system one of the prime targets for future ground or space based instruments suitable for a direct detection of the planetary atmospheres.

KW - astro-ph.EP

KW - astro-ph.SR

U2 - 10.1051/0004-6361/202452490

DO - 10.1051/0004-6361/202452490

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VL - 698

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JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

IS - June 2025

M1 - A114

ER -

RedDots: Planetary masses in the GJ1061 system from planet-planet interaction

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