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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

  • 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

  • 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

  • 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