Stellar obliquity measurements of six gas giants: Orbital misalignment of WASP-101b and WASP-131b
The result's identifiers
Result code in 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>
Alternative codes found
RIV/00216224:14310/24:00136531
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Stellar obliquity measurements of six gas giants: Orbital misalignment of WASP-101b and WASP-131b
Original language description
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.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Volume of the periodical
686
Issue of the periodical within the volume
June
Country of publishing house
FR - FRANCE
Number of pages
19
Pages from-to
A147
UT code for WoS article
001243387100001
EID of the result in the Scopus database
2-s2.0-85196116109