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Tuning in to Reveal Stellar Wobbles

6 Aug 2020, 07:45 UTC
Tuning in to Reveal Stellar Wobbles
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Title: An astrometric planetary companion candidate to the M9 Dwarf TVLM 513−46546Authors: Salvador Curiel, Gisela N. Ortiz-León, Amy J. Mioduszewski, Rosa M. TorresFirst Author’s Institution: Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Apdo Postal 70-264, México, D.F., MéxicoStatus: Accepted for publication in The Astronomical Journal, open access on arXiv
Finding PlanetsSince the first detections of planets outside of our solar system in the 1990s (for a review see this link), the exoplanet field has quickly grown. Initially, exoplanet detections were dominated by searches for Doppler shifts in the spectra of bright stars caused by the gravitational pull of one of more planets (known as the radial velocity method). In the last decade however, space-based satellites such as Kepler and TESS have shifted the focus to the transit method, or searching for small dips in the light received from stars as planets pass in front of them. However, these are not the only methods we can use to find planets. Astronomers have also made use of the light-bending power of gravity (known as microlensing) to find planets, which is a major science goal of the upcoming Nancy Grace Roman Space Telescope. Sometimes, it is even possible to directly image ...

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