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Extreme Precision in Radial Velocity IV

17–21 Mar 2019
Sunstar Hotel, Grindelwald, Switzerland
Europe/Zurich timezone

Xavier Dumusque

Session

Stellar signal 2

st2
18 Mar 2019, 11:00
Sunstar Hotel, Grindelwald, Switzerland

Sunstar Hotel, Grindelwald, Switzerland

Dorfstrasse 168, 3818 Grindelwald Switzerland

Presentation materials

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  1. 40. Extremely Precise Radial Velocities: From Periodic Signals to Planet Detections
    Prof. Andreas Quirrenbach (Landessternwarte, ZAH, U Heidelberg)
    18/03/2019, 11:00
    Stellar signals
    Oral

    It is quite common to find periodic signals in time series of precise radial velocities that cannot unambiguously be attributed either to a planetary companion or to intrinsic variability of the star. In such cases, plausibility criteria (e.g., fit quality, expected “typical” RV jitter, dynamical stability) and different types of additional information (e.g., stability of line profiles or line...

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  2. 7. Reconciling the planetary interpretation of the radial velocity super-Earth K2-18c
    Mr Ryan Cloutier
    18/03/2019, 11:20
    Stellar signals
    Oral

    The nearby mid-M dwarf K2-18 hosts a known transiting super-Earth. The so-called K2-18b orbits close to the inner edge of the habitable zone making it an interesting target for future atmospheric characterization of an M dwarf planet receiving Earth-like insolation. In 2017, the HARPS follow-up campaign to characterize the mass of K2-18b revealed a strong periodic signal at $\sim 9$ days that...

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  3. 8. FIESTA: new technique to parametrize stellar variability
    Jinglin Zhao (UNSW)
    18/03/2019, 11:40
    Stellar signals
    Oral

    We've been developping a new technique - FourIEr $\textit{phase}$ SpecTrum Analysis ($\mathit{\Phi}$ESTA or FIESTA) - that studies the spectral line profile variability in the Fourier space. It enables us to distinguish a line deformation from a line shift and provides the possibility to correct jitter. I will briefly lay out the theories and demonstrate its application in two example stars:...

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  4. 78. Discussion: Stellar activity
    18/03/2019, 12:00
    Stellar signals
    Oral
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