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

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
Journal	Astronomy & Astrophysics
Publication status	Accepted/In press - 21 Apr 2025

Keywords

astro-ph.EP
astro-ph.SR

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2504.10926v1.pdfAccepted author manuscript, 7.74 MB

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@article{88d8e081c46e484f9c294984a0ce452b,

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. ",

keywords = "astro-ph.EP, astro-ph.SR",

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 = "Astronomy and Astrophysics, accepted; 10 Pages, 7 Figures plus Appendix",

year = "2025",

month = apr,

day = "21",

language = "English",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

TY - JOUR

T1 - RedDots: Planetary masses in the GJ1061 system from planet-planet interaction

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.

N1 - Astronomy and Astrophysics, accepted; 10 Pages, 7 Figures plus Appendix

PY - 2025/4/21

Y1 - 2025/4/21

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

M3 - Article

SN - 0004-6361

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

ER -

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

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Keywords

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