تقرير
TFAW survey II: 6 Newly Validated Planets and 13 Planet Candidates from K2
| العنوان: | TFAW survey II: 6 Newly Validated Planets and 13 Planet Candidates from K2 |
|---|---|
| المؤلفون: | del Ser, D., Fors, O., del Alcázar, M., Dyachenko, V., Horch, E. P., Tokovinin, A., Ziegler, C., van Belle, G. T., Clark, C. A., Hartman, Z. D. |
| سنة النشر: | 2022 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Earth and Planetary Astrophysics |
| الوصف: | 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-analyze 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 analyzed a first subset of 24 candidate planetary systems around relatively faint host stars (10.9 < $K_{p}$ < 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% 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 days. Some interesting systems include two ultra-short-period planets, three multi-planetary systems, three sub-Neptunes that appear to be within the small planet Radius Gap, and two validated and one candidate sub-Earths (EPIC 210706310, EPIC 210768568, and EPIC 246078343) orbiting metal-poor stars. Comment: Submitted to Monthly Notices of the Royal Astronomical Society. 25 pages, 14 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1093/mnras/stac3087 |
| URL الوصول: | http://arxiv.org/abs/2210.10805 |
| رقم الأكسشن: | edsarx.2210.10805 |
| قاعدة البيانات: | arXiv |
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