Three planets transiting the evolved star EPIC 249893012: a hot 8.8-M-circle plus super-Earth and two warm 14.7 and 10.2-M-circle plus sub-Neptunes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F20%3A00534069" target="_blank" >RIV/67985815:_____/20:00534069 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/0004-6361/201937080" target="_blank" >https://doi.org/10.1051/0004-6361/201937080</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201937080" target="_blank" >10.1051/0004-6361/201937080</a>
Alternative languages
Result language
angličtina
Original language name
Three planets transiting the evolved star EPIC 249893012: a hot 8.8-M-circle plus super-Earth and two warm 14.7 and 10.2-M-circle plus sub-Neptunes
Original language description
We report the discovery of a new planetary system with three transiting planets, one super-Earth and two sub-Neptunes, that orbit EPIC 249893012, a G8 IV-V evolved star ( M ? = 1.05 0.05 M fi, R ? = 1.71 0.04 R fi, Te ff = 5430 85 K). The star is just leaving the main sequence. We combined K2 photometry with IRCS adaptive-optics imaging and HARPS, HARPS-N, and CARMENES highprecision radial velocity measurements to confirm the planetary system, determine the stellar parameters, and measure radii, masses, and densities of the three planets. With an orbital period of 3:5949+0:0007 0:0007 days, a mass of 8:75+1:09 1:08 M , and a radius of 1:95+0:09 0:08 R , the inner planet b is compatible with nickel-iron core and a silicate mantle ( b = 6:39+1:19 1:04 g cm 3).
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
2020
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
636
Issue of the periodical within the volume
April
Country of publishing house
FR - FRANCE
Number of pages
13
Pages from-to
A89
UT code for WoS article
000530111800007
EID of the result in the Scopus database
2-s2.0-85084414220