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Browsing by Author "Lisogorskyi, Maksym"
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Activity and telluric contamination in HARPS observations of Alpha Centauri B
Lisogorskyi, Maksym; Jones, Hugh; Feng, Fabo (2019-06-01)The Alpha Centauri system is the primary target for planet search as it is the closest star system composed of a solar twin α CenA, a K-dwarf α Cen B, and an M-dwarf Proxima Centauri, which has a confirmed planet in the ... -
Exploring the robustness of Keplerian signals to the removal of active and telluric features
Lisogorskyi, Maksym; Jones, Hugh R. A.; Feng, Fabo; Butler, R. Paul; Vogt, Steven S. (2020-10-22)We examine the influence of activity- and telluric-induced radial velocity signals on high resolution spectra taken with an iodine absorption cell. We exclude 2 Angstrom spectral chunks containing active and telluric lines ... -
The impact of unresolved magnetic spots on high precision radial velocity measurements
Lisogorskyi, Maksym; Saikia, Susdeshna Boro; Jeffers, Sandra V.; Jones, Hugh R. A.; Morin, Julien; Mengel, Matthew; Reiners, Ansgar; Vidotto, Aline A.; Petit, Pascal (2020-07-23)The Doppler method of exoplanet detection has been extremely successful, but suffers from contaminating noise from stellar activity. In this work a model of a rotating star with a magnetic field based on the geometry of ... -
PEXO : a global modeling framework for nanosecond timing, microsecond astrometry, and μm/s radial velocities
Feng, Fabo; Lisogorskyi, Maksym; Jones, Hugh R. A.; Kopeikin, Sergei M.; Butler, R. Paul; Anglada-Escude, Guillem; Boss, Alan P. (2019-10-15)The ability to make independent detections of the signatures of exoplanets with complementary telescopes and instruments brings a new potential for robust identification of exoplanets and precision characterization. We ...