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Showing 1–3 of 3 results
Advanced filters: Author: Theo Khouri Clear advanced filters

  • Observations of some so-called ‘water fountain’ stars show that they appear to have lost a large fraction of their initial mass in a very short time (hundreds of years). This leads Khouri et al. to suggest that these sources have undergone the poorly understood process of common-envelope evolution, where the envelope of one star engulfs that of its companion.

    • Theo Khouri
    • Wouter H. T. Vlemmings
    • Raghvendra Sahai
    Research
    Nature Astronomy
    Volume: 6, P: 275-286

  • Presenting a series of interferometric images of R Doradus, this study reveals prominent convective structures on the surface of this giant evolved star that have a timescale of about one month.

    • Wouter Vlemmings
    • Theo Khouri
    • Matthias Maercker
    ResearchOpen Access
    Nature
    Volume: 633, P: 323-326

  • The atmosphere of evolved star W Hya has been resolved with ALMA and shown to be shock heated. These observations provide important empirical constraints for the understanding of circumstellar structure, convection, chemistry and pulsation.

    • Wouter Vlemmings
    • Theo Khouri
    • Aki Takigawa
    Research
    Nature Astronomy
    Volume: 1, P: 848-853