Archival Legacy Investigations of Circumstellar Environments (ALICE): Statistical assessment of point source detections
Perrin, Marshall D.; Pueyo, Laurent; Choquet, Élodie; Rajan, Abhijith; Soummer, Rémi; Hagan, J. Brendan; Gofas-Salas, Elena; Aguilar, Jonathan
United States
Abstract
The ALICE program, for Archival Legacy Investigation of Circumstellar Environment, is currently conducting a virtual survey of about 400 stars, by re-analyzing the HST-NICMOS coronagraphic archive with advanced post-processing techniques. We present here the strategy that we adopted to identify detections and potential candidates for follow-up observations, and we give a preliminary overview of our detections. We present a statistical analysis conducted to evaluate the confidence level on these detection and the completeness of our candidate search.