Evaporation of Jupiter-like planets orbiting extreme horizontal branch stars

Ealeal Bear*, Noam Soker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We study the evaporation of planets orbiting close to hot (extreme) horizontal branch (EHB) stars. These planets survived the common envelope phase inside the envelope of the red giant star progenitor. We find that Jupiter-like planets orbiting within ∼10R from an EHB star suffer a non-negligible mass-loss during their ∼108-yr evolution on the horizontal branch. The evaporated gas is ionized and becomes a source of Balmer lines. Such planets might be detected by the periodic variation of the Doppler shift of the Balmer lines.

Original languageEnglish
Pages (from-to)1788-1792
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Volume414
Issue number2
DOIs
StatePublished - Jun 2011
Externally publishedYes

Keywords

  • Planets and satellites: atmospheres
  • Stars: general
  • Stars: horizontal branch

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