Follow-up Imaging of Disk Candidates from the Disk Detective Citizen Science Project: New Discoveries and False-Positives in WISE Circumstellar Disk Surveys

摘要: The Disk Detective citizen science project aims to find new stars with excess 22-$\mu$m emission from circumstellar dust in the AllWISE data release Wide-field Infrared Survey Explorer (WISE). We evaluated 261 objects of interest imaging Robo-AO adaptive optics instrument on 1.5m telescope at Palomar Observatory and RetroCam 2.5m du Pont Las Campanas search for background 0.15''-12'' separations each target. Our analysis these lead us reject 7% targets. Combining this result statistics our online image classification efforts implies that most $7.9\% \pm 0.2\%$ AllWISE-selected infrared excesses are good disk candidates. Applying false positive rates other surveys, we searches McDonald et al. (2012), (2017), Marton (2016) all have $>70\%$. Moreover, thirteen candidates Theissen & West (2014) W4 signal-to-noise >3 positives. present 244 survived vetting by follow-up imaging. Of these, 213 newly-identified systems. Twelve candidate members comoving pairs based \textit{Gaia} astrometry, supporting hypothesis warm is associated binary also note discovery 22 $\mu$m around two known Scorpius-Centaurus association, identify host WISEA J164540.79-310226.6 as a likely Sco-Cen member. Thirty-one closer than $\sim 125$ pc (including 27 debris disks), making them targets direct exoplanet searches.