High-resolution Transmission Spectroscopy of Four Hot Inflated
Gas Giant Exoplanets

J 2019

High-resolution Transmission Spectroscopy of Four Hot Inflated Gas Giant Exoplanets

ŽÁK, Jiří, Petr KABÁTH, Henri M. J. BOFFIN, Valentin D. IVANOV, Marek SKARKA et. al.

Základní údaje

Originální název

High-resolution Transmission Spectroscopy of Four Hot Inflated Gas Giant Exoplanets

Autoři

ŽÁK, Jiří (203 Česká republika, garant, domácí), Petr KABÁTH (203 Česká republika), Henri M. J. BOFFIN, Valentin D. IVANOV a Marek SKARKA (203 Česká republika, domácí)

Vydání

Astronomical Journal, BRISTOL, Springer Science+Business Media, 2019, 0004-6256

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Full Text

Impakt faktor

Impact factor: 5.840

Kód RIV

RIV/00216224:14310/19:00111907

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.3847/1538-3881/ab32ec

UT WoS

000482574300001

Klíčová slova anglicky

planetary systems; planets and satellites: atmospheres; planets and satellites: individual (WASP-76b; WASP-127b; WAS P-166b; KELT-11); techniques: spectroscopic

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 10. 3. 2020 10:16, Mgr. Marie Šípková, DiS.

Anotace

V originále

The technique of transmission spectroscopy allows us to constrain the chemical composition of the atmospheres of transiting exoplanets. It relies on very high signal-to-noise spectroscopic (or spectrophotometric) observations and is thus most suited for bright exoplanet host stars. In the era of the Transiting Exoplanet Survey Satellite, Next Generation Space Telescope, and PLAnetary Transits and Oscillations of stars (PLATO), more and more suitable targets, even for mid-sized telescopes, are discovered. Furthermore, a wealth of archival data is available that could become a basis for long-term monitoring of exo-atmospheres. 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.

Návaznosti

EF16_027/0008360, projekt VaV

Název: Postdoc@MUNI

Citovat

ŽÁK, Jiří, Petr KABÁTH, Henri M. J. BOFFIN, Valentin D. IVANOV a Marek SKARKA. High-resolution Transmission Spectroscopy of Four Hot Inflated Gas Giant Exoplanets. Astronomical Journal. BRISTOL: Springer Science+Business Media, 2019, roč. 158, č. 3, s. 1-8. ISSN 0004-6256. Dostupné z: https://dx.doi.org/10.3847/1538-3881/ab32ec.

@article{1596980,
   author = {Žák, Jiří and Kabáth, Petr and Boffin, Henri M. J. and Ivanov, Valentin D. and Skarka, Marek},
   article_location = {BRISTOL},
   article_number = {3},
   doi = {http://dx.doi.org/10.3847/1538-3881/ab32ec},
   keywords = {planetary systems; planets and satellites: atmospheres; planets and satellites: individual (WASP-76b; WASP-127b; WAS P-166b; KELT-11); techniques: spectroscopic},
   language = {eng},
   issn = {0004-6256},
   journal = {Astronomical Journal},
   title = {High-resolution Transmission Spectroscopy of Four Hot Inflated Gas Giant Exoplanets},
   url = {https://iopscience.iop.org/article/10.3847/1538-3881/ab32ec},
   volume = {158},
   year = {2019}
}

TY  - JOUR
ID  - 1596980
AU  - Žák, Jiří - Kabáth, Petr - Boffin, Henri M. J. - Ivanov, Valentin D. - Skarka, Marek
PY  - 2019
TI  - High-resolution Transmission Spectroscopy of Four Hot Inflated Gas Giant Exoplanets
JF  - Astronomical Journal
VL  - 158
IS  - 3
SP  - 1-8
EP  - 1-8
PB  - Springer Science+Business Media
SN  - 00046256
KW  - planetary systems
KW  - planets and satellites: atmospheres
KW  - planets and satellites: individual (WASP-76b
KW  - WASP-127b
KW  - WAS P-166b
KW  - KELT-11)
KW  - techniques: spectroscopic
UR  - https://iopscience.iop.org/article/10.3847/1538-3881/ab32ec
L2  - https://iopscience.iop.org/article/10.3847/1538-3881/ab32ec
N2  - The technique of transmission spectroscopy allows us to constrain the chemical composition of the atmospheres of transiting exoplanets. It relies on very high signal-to-noise spectroscopic (or spectrophotometric) observations and is thus most suited for bright exoplanet host stars. In the era of the Transiting Exoplanet Survey Satellite, Next Generation Space Telescope, and PLAnetary Transits and Oscillations of stars (PLATO), more and more suitable targets, even for mid-sized telescopes, are discovered. Furthermore, a wealth of archival data is available that could become a basis for long-term monitoring of exo-atmospheres. 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.
ER  -

ŽÁK, Jiří, Petr KABÁTH, Henri M. J. BOFFIN, Valentin D. IVANOV a Marek SKARKA. High-resolution Transmission Spectroscopy of Four Hot Inflated Gas Giant Exoplanets. \textit{Astronomical Journal}. BRISTOL: Springer Science+Business Media, 2019, roč.~158, č.~3, s.~1-8. ISSN~0004-6256. Dostupné z: https://dx.doi.org/10.3847/1538-3881/ab32ec.

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