Transiting exoplanets and magnetic spots characterized with optical interferometry

2014/10/29 by R. Ligi, D. Mourard, A. -M. Lagrange +3
Physics and Astronomy · #Astrometry #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Astrophysics and Star Formation Studies #Context (archaeology) #Exoplanet #Geology #Infrared #Interferometry #Optics #Photometry (optics) #Physics #Stars #Stellar, planetary, and galactic studies #Wavelength #astro-ph.IM #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/201424013

published as A&A 574, A69 (2015) · Version 2 after language editing and a few typos corrected. 12 pages, 7 figures

openalex publication_date 2014/10/29 · arxiv created 2014/11/24 · arxiv updated 2015/01/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Context. Stellar activity causes difficulties in the characterization of transiting exoplanets. In particular, the magnetic spots present on most exoplanet host stars can lead to false detections with radial velocity, photometry, or astrometry techniques. Studies have been performed to quantify their impact on infrared interferometry, but no such studies have been performed in the visible domain. This wavelength domain, however, allows reaching better angular resolution than in the infrared and is also the wavelength most often used for spectroscopic and photometric measurements.

Citations

• A new interferometric study of four exoplanet host stars:θ Cygni, 14 Andromedae,υAndromedae and 42 Draconis
• Planet transit and stellar granulation detection with interferometry
• A Jupiter-mass companion to a solar-type star
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