PLATOSpec's first results: Planets WASP-35b and TOI-622b are on
aligned orbits, and K2-237b is on a polar orbit

J 2025

PLATOSpec's first results: Planets WASP-35b and TOI-622b are on aligned orbits, and K2-237b is on a polar orbit

ZAK, J.; P. KABATH; H. M. J. BOFFIN; J. LIPTAK; M. SKARKA et al.

Základní údaje

Originální název

PLATOSpec's first results: Planets WASP-35b and TOI-622b are on aligned orbits, and K2-237b is on a polar orbit

Autoři

ZAK, J.; P. KABATH; H. M. J. BOFFIN; J. LIPTAK; M. SKARKA; R. BRAHM; P. GAJDOS; A. BOCCHIERI; D. ITRICH; L. VANZI; P. PINTR; Jan JANÍK a A. HATZES

Vydání

ASTRONOMY & ASTROPHYSICS, LES ULIS CEDEX A, EDP SCIENCES S A, 2025, 0004-6361

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 5.800 v roce 2024

Označené pro přenos do RIV

Ano

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

techniques: radial velocities; planets and satellites: atmospheres; planets and satellites: gaseous planets; planet-star interactions; planets and satellites: individual: WASP-35b; planets and satellites: individual: TOI-622b

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 16. 1. 2026 09:53, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

The spin-orbit angle between a stellar spin axis and its planetary orbital axis is a key diagnostic of planetary migration pathways, yet the mechanisms shaping the observed spin-orbit distribution remain incompletely understood. Combining the spin-orbit angle with atmospheric measurements has emerged as a powerful method of studying exoplanets that showcases the synergy between ground-and space-based observations. We present the Rossiter-McLaughlin effect measurements of the projected spin-orbit angle (lambda) for three gaseous exoplanets using the newly commissioned PLATOSpec instrument on the E152 Telescope at La Silla Observatory. For WASP-35b, we determine lambda = 1(-18)(+19) deg, demonstrating PLATOSpec's capabilities through excellent agreement with HARPS-N literature data. We provide the first spin-orbit measurements for TOI-622b (lambda = -4 +/- 12 deg, true spin-orbit angle psi = 16.1(-9.7)(+8.0) deg), revealing an aligned orbit consistent with quiescent disk migration. For K2-237b, we find lambda = 91 +/- 7 deg and psi = 90.5(-6.2)(+6.8) deg, indicating a nearly perfect polar orbit, which suggests a history consistent with disk-free migration, contrasting with previous studies inferring disk migration. TOI-622b populates a sparsely populated region of sub-Jovian planets with measured spin-orbit angles orbiting stars above the Kraft break, while K2-237b's polar configuration strengthens tentative evidence of preferential orbital orientations. All three systems are compelling targets for future atmospheric characterization, and these dynamical constraints will be vital for a comprehensive understanding of their formation and evolution.

Citovat

ZAK, J.; P. KABATH; H. M. J. BOFFIN; J. LIPTAK; M. SKARKA; R. BRAHM; P. GAJDOS; A. BOCCHIERI; D. ITRICH; L. VANZI; P. PINTR; Jan JANÍK a A. HATZES. PLATOSpec's first results: Planets WASP-35b and TOI-622b are on aligned orbits, and K2-237b is on a polar orbit. ASTRONOMY & ASTROPHYSICS. LES ULIS CEDEX A: EDP SCIENCES S A, 2025, roč. 702, October, s. 1-11. ISSN 0004-6361. Dostupné z: https://doi.org/10.1051/0004-6361/202556115.

@article{2534059,
   author = {Zak, J. and Kabath, P. and Boffin, H. M. J. and Liptak, J. and Skarka, M. and Brahm, R. and Gajdos, P. and Bocchieri, A. and Itrich, D. and Vanzi, L. and Pintr, P. and Janík, Jan and Hatzes, A.},
   article_location = {LES ULIS CEDEX A},
   article_number = {October},
   doi = {https://doi.org/10.1051/0004-6361/202556115},
   keywords = {techniques: radial velocities; planets and satellites: atmospheres; planets and satellites: gaseous planets; planet-star interactions; planets and satellites: individual: WASP-35b; planets and satellites: individual: TOI-622b},
   language = {eng},
   issn = {0004-6361},
   journal = {ASTRONOMY & ASTROPHYSICS},
   title = {PLATOSpec's first results: Planets WASP-35b and TOI-622b are on aligned orbits, and K2-237b is on a polar orbit},
   url = {https://www.aanda.org/articles/aa/pdf/2025/10/aa56115-25.pdf},
   volume = {702},
   year = {2025}
}

TY  - JOUR
ID  - 2534059
AU  - Zak, J. - Kabath, P. - Boffin, H. M. J. - Liptak, J. - Skarka, M. - Brahm, R. - Gajdos, P. - Bocchieri, A. - Itrich, D. - Vanzi, L. - Pintr, P. - Janík, Jan - Hatzes, A.
PY  - 2025
TI  - PLATOSpec's first results: Planets WASP-35b and TOI-622b are on aligned orbits, and K2-237b is on a polar orbit
JF  - ASTRONOMY & ASTROPHYSICS
VL  - 702
IS  - October
SP  - 1-11
EP  - 1-11
PB  - EDP SCIENCES S A
SN  - 00046361
KW  - techniques: radial velocities
KW  - planets and satellites: atmospheres
KW  - planets and satellites: gaseous planets
KW  - planet-star interactions
KW  - planets and satellites: individual: WASP-35b
KW  - planets and satellites: individual: TOI-622b
UR  - https://www.aanda.org/articles/aa/pdf/2025/10/aa56115-25.pdf
N2  - The spin-orbit angle between a stellar spin axis and its planetary orbital axis is a key diagnostic of planetary migration pathways, yet the mechanisms shaping the observed spin-orbit distribution remain incompletely understood. Combining the spin-orbit angle with atmospheric measurements has emerged as a powerful method of studying exoplanets that showcases the synergy between ground-and space-based observations. We present the Rossiter-McLaughlin effect measurements of the projected spin-orbit angle (lambda) for three gaseous exoplanets using the newly commissioned PLATOSpec instrument on the E152 Telescope at La Silla Observatory. For WASP-35b, we determine lambda = 1(-18)(+19) deg, demonstrating PLATOSpec's capabilities through excellent agreement with HARPS-N literature data. We provide the first spin-orbit measurements for TOI-622b (lambda = -4 +/- 12 deg, true spin-orbit angle psi = 16.1(-9.7)(+8.0) deg), revealing an aligned orbit consistent with quiescent disk migration. For K2-237b, we find lambda = 91 +/- 7 deg and psi = 90.5(-6.2)(+6.8) deg, indicating a nearly perfect polar orbit, which suggests a history consistent with disk-free migration, contrasting with previous studies inferring disk migration. TOI-622b populates a sparsely populated region of sub-Jovian planets with measured spin-orbit angles orbiting stars above the Kraft break, while K2-237b's polar configuration strengthens tentative evidence of preferential orbital orientations. All three systems are compelling targets for future atmospheric characterization, and these dynamical constraints will be vital for a comprehensive understanding of their formation and evolution.
ER  -

ZAK, J.; P. KABATH; H. M. J. BOFFIN; J. LIPTAK; M. SKARKA; R. BRAHM; P. GAJDOS; A. BOCCHIERI; D. ITRICH; L. VANZI; P. PINTR; Jan JANÍK a A. HATZES. PLATOSpec's first results: Planets WASP-35b and TOI-622b are on aligned orbits, and K2-237b is on a polar orbit. \textit{ASTRONOMY \&{} ASTROPHYSICS}. LES ULIS CEDEX A: EDP SCIENCES S A, 2025, roč.~702, October, s.~1-11. ISSN~0004-6361. Dostupné z: https://doi.org/10.1051/0004-6361/202556115.

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