Two planetary systems with transiting Earth-sized and super-Earth planets orbiting late-type dwarf stars

Bibcode
2018MNRAS.480L...1D
DOI
10.1093/mnrasl/sly102
Díez Alonso, E.; González Hernández, J. I.; Suárez Gómez, S. L.; Aguado, D. S.; González Gutiérrez, C.; Suárez Mascareño, A.; Cabrera-Lavers, A.; González-Nuevo, J.; Toledo-Padrón, B.; Gracia, J.; de Cos Juez, F. J.; Rebolo, R.
Referencia bibliográfica

Monthly Notices of the Royal Astronomical Society: Letters, Volume 480, Issue 1, p.L1-L5

Fecha de publicación:
10
2018
Número de autores
12
Número de autores del IAC
5
Número de citas
14
Número de citas referidas
13
Descripción
We present two new planetary systems found around cool dwarf stars with data from the K2 mission. The first system was found in K2-239 (EPIC 248545986), characterized in this work as M3.0V and observed in the 14th campaign of K2. It consists of three Earth-sized transiting planets with radii of 1.1, 1.0, and 1.1 R⊕, showing a compact configuration with orbital periods of 5.24, 7.78, and 10.1 d, close to 2:3:4 resonances. The second was found in K2-240 (EPIC 249801827), characterized in this work as M0.5V and observed in the 15th campaign. It consists of two transiting super-Earths with radii 2.0 and 1.8 R⊕ and orbital periods of 6.03 and 20.5 d. The equilibrium temperatures of the atmospheres of these planets are estimated to be in the range of 380-600 K and the amplitudes of signals in transmission spectroscopy are estimated at ˜10 ppm.
Tipo
Con árbitro
Técnicas

Te puede interesar

  • Con árbitro
    Copacabana: a probabilistic membership assignment method for galaxy clusters
    Cosmological analyses using galaxy clusters in optical/near-infrared photometric surveys require robust characterization of their galaxy content. Precisely determining which galaxies belong to a cluster is crucial. In this paper, we present the COlor Probabilistic Assignment of Clusters And BAyesiaNAnalysis (Copacabana) algorithm. Copacabana
    Esteves, J. H. et al.

    Fecha de publicación:

    1
    2025
    Bibcode
    2025MNRAS.536..931E
    Número de citas
    1
  • Con árbitro
    Constraints on compact objects from the Dark Energy Survey 5-yr supernova sample
    Gravitational lensing magnification of Type Ia supernovae (SNe Ia) allows information to be obtained about the distribution of matter on small scales. In this paper, we derive limits on the fraction $\alpha$ of the total matter density in compact objects (which comprise stars, stellar remnants, small stellar groupings, and primordial black holes)
    Shah, P. et al.

    Fecha de publicación:

    1
    2025
    Bibcode
    2025MNRAS.536..946S
    Número de citas
    0
  • Con árbitro
    Multiband Optical Variability of the Blazar 3C 454.3 on Diverse Timescales
    Due to its peculiar and highly variable nature, the blazar 3C 454.3 has been extensively monitored by the WEBT team. Here, we present for the first time these long-term optical flux and color variability results using data acquired in B, V, R, and I bands over a time span of about two decades. We include data from WEBT collaborators and public
    Dogra, Karan et al.

    Fecha de publicación:

    1
    2025
    Bibcode
    2025ApJS..276....1D
    Número de citas
    0