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http://hdl.handle.net/2445/206389
Title: | TFAW survey II: six newly validated planets and 13 planet candidates from K2 |
Author: | Ser Badia, Daniel del Fors Aldrich, Octavi Alcázar i Julià, Marc del Dyachenko, Vladimir Horch, Elliott P. Tokovinin, Andrei Ziegler, Carl van Belle, Gerard T. Clark, Catherine A. Hartman, Zachary D. |
Keywords: | Planetes Satèl·lits Fotometria Planets Satellites Photometry |
Issue Date: | 28-Oct-2022 |
Publisher: | Royal Astronomical Society |
Abstract: | Searching for Earth-sized planets in data from Kepler's extended mission (K2) is a niche that still remains to be fully exploited. The TFAW survey is an ongoing project that aims to re-analyse all light curves in K2 C1-C8 and C12-C18 campaigns with a wavelet-based detrending and denoising method, and the period search algorithm TLS to search for new transit candidates not detected in previous works. We have analysed a first subset of 24 candidate planetary systems around relatively faint host stars (10.9 < Kp < 15.4) to allow for follow-up speckle imaging observations. Using vespa and TRICERATOPS, we statistically validate six candidates orbiting four unique host stars by obtaining false-positive probabilities smaller than 1 per cent with both methods. We also present 13 vetted planet candidates that might benefit from other, more precise follow-up observations. All of these planets are sub-Neptune-sized with two validated planets and three candidates with sub-Earth sizes, and have orbital periods between 0.81 and 23.98 d. Some interesting systems include two ultra-short-period planets, three multiplanetary systems, three sub-Neptunes that appear to be within the small planet Radius Gap, and two validated and one candidate sub-Earths (EPIC 210706310.01, K2-411 b, and K2-413 b) orbiting metal-poor stars. |
Note: | Reproducció del document publicat a: https://doi.org/10.1093/mnras/stac3087 |
It is part of: | Monthly Notices of the Royal Astronomical Society, 2022, vol. 518, num.1, p. 669-690 |
URI: | http://hdl.handle.net/2445/206389 |
Related resource: | https://doi.org/10.1093/mnras/stac3087 |
ISSN: | 0035-8711 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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253849.pdf | 3.58 MB | Adobe PDF | View/Open |
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