High-resolution Transmission Spectroscopy of Four Hot Inflated Gas Giant Exoplanets
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F19%3A00517247" target="_blank" >RIV/67985815:_____/19:00517247 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3847/1538-3881/ab32ec" target="_blank" >https://doi.org/10.3847/1538-3881/ab32ec</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-3881/ab32ec" target="_blank" >10.3847/1538-3881/ab32ec</a>
Alternative languages
Result language
angličtina
Original language name
High-resolution Transmission Spectroscopy of Four Hot Inflated Gas Giant Exoplanets
Original language description
We analyzed archival High Accuracy Radial velocity Planet Searcher (HARPS) spectroscopic time series of four host stars to transiting bloated gas exoplanets, namely WASP-76b, WASP-127b, WASP-166b, and KELT-11b, searching for traces of sodium (sodium doublet), hydrogen (H alpha, H beta), and lithium (670.8 nm). The archival data sets include spectroscopic time series taken during transits. Comparing in- and out-of-transit spectra we can filter out the stellar lines and investigate the absorption from the planet. Simultaneously, the stellar activity is monitored using the Mg I and Ca I lines. We detect sodium in the atmosphere of WASP-76b at a 7-9 sigma level. Furthermore, we report also at a 4-8 sigma level of significance the detection of sodium in the atmosphere of WASP-127b, confirming earlier results based on low-resolution spectroscopy. The data show no sodium nor any other atom at high confidence levels for WASP-166b nor KELT-11b, hinting at the presence of thick high clouds.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GC17-01752J" target="_blank" >GC17-01752J: Tautenburg-Ondřejov radial velocity follow-up of transiting planetary systems</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ASTRONOMICAL JOURNAL
ISSN
1538-3881
e-ISSN
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Volume of the periodical
158
Issue of the periodical within the volume
3
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
120
UT code for WoS article
000482574300001
EID of the result in the Scopus database
2-s2.0-85072370952