Stellar obliquity measurements of six gas giants: Orbital misalignment of WASP-101b and WASP-131b

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00586934" target="_blank" >RIV/67985815:_____/24:00586934 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/24:00136531

Výsledek na webu

<a href="https://hdl.handle.net/11104/0354781" target="_blank" >https://hdl.handle.net/11104/0354781</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202349084" target="_blank" >10.1051/0004-6361/202349084</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stellar obliquity measurements of six gas giants: Orbital misalignment of WASP-101b and WASP-131b

Popis výsledku v původním jazyce

One can infer the orbital alignment of exoplanets with respect to the spin of their host stars using the Rossiter-McLaughlin effect, thereby giving us the chance to test planet formation and migration theories and improve our understanding of the currently observed population. We analyzed archival HARPS and HARPS-N spectroscopic transit time series of six gas giant exoplanets on short orbits, namely WASP-77 Ab, WASP-101b, WASP-103b, WASP-105b, WASP-120b, and WASP-131b. We find a moderately misaligned orbit for WASP-101b (lambda = 34 degrees +/- 3) and a highly misaligned orbit for WASP-131b (lambda = 161 degrees +/- 5), while the four remaining exoplanets appear to be aligned: WASP-77 Ab (lambda =8 degrees(+19)(-18)), WASP-103b (lambda =2 degrees(+35)(-36)), WASP-105b (lambda =14 degrees(+28)(-24)), and WASP-120b (lambda =2 degrees +/- 4). For WASP-77 Ab, we are able to infer its true orbital obliquity (Psi = 48 degrees(+22)(-21)). We additionally performed transmission spectroscopy of the targets in search of strong atomic absorbers in the exoatmospheres, but were unable to detect any features, most likely due to the presence of high-altitude clouds or Rayleigh scattering muting the strength of the features. Finally, we comment on future perspectives on studying these planets with upcoming space missions to investigate their evolution and migration histories.

Název v anglickém jazyce

Stellar obliquity measurements of six gas giants: Orbital misalignment of WASP-101b and WASP-131b

Popis výsledku anglicky

One can infer the orbital alignment of exoplanets with respect to the spin of their host stars using the Rossiter-McLaughlin effect, thereby giving us the chance to test planet formation and migration theories and improve our understanding of the currently observed population. We analyzed archival HARPS and HARPS-N spectroscopic transit time series of six gas giant exoplanets on short orbits, namely WASP-77 Ab, WASP-101b, WASP-103b, WASP-105b, WASP-120b, and WASP-131b. We find a moderately misaligned orbit for WASP-101b (lambda = 34 degrees +/- 3) and a highly misaligned orbit for WASP-131b (lambda = 161 degrees +/- 5), while the four remaining exoplanets appear to be aligned: WASP-77 Ab (lambda =8 degrees(+19)(-18)), WASP-103b (lambda =2 degrees(+35)(-36)), WASP-105b (lambda =14 degrees(+28)(-24)), and WASP-120b (lambda =2 degrees +/- 4). For WASP-77 Ab, we are able to infer its true orbital obliquity (Psi = 48 degrees(+22)(-21)). We additionally performed transmission spectroscopy of the targets in search of strong atomic absorbers in the exoatmospheres, but were unable to detect any features, most likely due to the presence of high-altitude clouds or Rayleigh scattering muting the strength of the features. Finally, we comment on future perspectives on studying these planets with upcoming space missions to investigate their evolution and migration histories.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Svazek periodika

686

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

19

Strana od-do

A147

Kód UT WoS článku

001243387100001

EID výsledku v databázi Scopus

2-s2.0-85196116109