4 datasets found

Discipline: Astrophysical Processes Keywords: subdwarf stars

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  • Wide astrometric companions with Gaia DR2

    Evolution of close binaries often proceeds through the common envelope stage. The physics of the envelope ejection (CEE) is not yet understood, and several mechanisms were...
  • K2 observations of binaries PHL 457 and EQ Psc

    We present an analysis of two pulsating subdwarf B stars PHL 457 and EQ Psc observed during the K2 mission. The K2 light curves of both stars show variation consistent with...
  • Hot sub-luminous and binaries variability

    Hot sub-luminous stars represent a population of stripped and evolved red giants located at the Extreme Horizontal Branch (EHB). Since they exhibit a wide range of variability...
  • 3-D selection of 167 sub-stellar companions

    We analyze 5108 AFGKM stars with at least five high-precision radial velocity points, as well as Gaia and Hipparcos astrometric data, utilizing a novel pipeline developed in...
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