Time-resolved UVES observations of a stellar flare on the planet host HD 189733 during primary transit
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00482450" target="_blank" >RIV/67985815:_____/17:00482450 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/0004-6361/201630068" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201630068</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201630068" target="_blank" >10.1051/0004-6361/201630068</a>
Alternative languages
Result language
angličtina
Original language name
Time-resolved UVES observations of a stellar flare on the planet host HD 189733 during primary transit
Original language description
HD 189733 is an exoplanetary system consisting of a transiting hot Jupiter and an active K2V-type main sequence star. Rich manifestations of a stellar activity, like photometric spots or chromospheric flares were repeatedly observed in this system in optical, UV and X-rays. Aims. We aim to use VLT/UVES high resolution (R = 60 000) echelle spectra to study a stellar flare. We determine the energy released during the flare in all studied chromospheric lines combined to be about 8.7 X 10(31) erg, which puts this event at the upper end of flare energies observed on the Sun. Our analysis does not reveal any significant delay of the flare peak observed in the Balmer and Ca II H & K lines, although we find a clear difference in the temporal evolution of these lines. The He I D3 shows additional absorption possibly related to the flare event. Based on the flux released in Ca II H & K lines during the flare, we estimate the soft X-ray flux emission to be 7 X 10(30) erg.n
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
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
1432-0746
e-ISSN
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Volume of the periodical
607
Issue of the periodical within the volume
November
Country of publishing house
FR - FRANCE
Number of pages
12
Pages from-to
"A66/1"-"A66/12"
UT code for WoS article
000415265200003
EID of the result in the Scopus database
2-s2.0-85034431475