TFAW survey II: six newly validated planets and 13 planet candidates from <i>K2</i>

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 an ongoing project aims re-analyze all light curves K2 C1-C8 and C12-C18 campaigns with wavelet-based detrending denoising method, the period search algorithm TLS new transit candidates not detected previous works. We have analyzed first subset of 24 candidate planetary systems around relatively faint host stars (10.9 < $K_{p}$ 15.4) allow follow-up speckle imaging observations. Using VESPA TRICERATOPS, we statistically validate six orbiting four unique by obtaining false-positive probabilities smaller than 1% both methods. also present 13 vetted planet might benefit other, more precise All these are sub-Neptune-sized, two validated three sub-Earth sizes, orbital periods between 0.81 23.98 days. Some interesting include ultra-short-period planets, multi-planetary systems, sub-Neptunes appear within small Radius Gap, one sub-Earths (EPIC 210706310, EPIC 210768568, 246078343) metal-poor stars.