演講資訊

摘要：

The DECam Ecliptic Exploration Project (DEEP) is an extensive survey of the trans-Neptunian solar system conducted using the 4-meter Blanco telescope at the Cerro Tololo Inter-American Observatory in Chile, utilizing the Dark Energy Camera (DECam). Through the implementation of a shift-and-stack technique, DEEP achieves an impressive mean limiting magnitude of r ∼ 26.2, resulting in an unparalleled combination of survey area and depth. This advancement significantly enhances our understanding of the populations within the Kuiper Belt. This talk presents the findings from an analysis of 23 sq. deg. DECam fields situated along the invariable plane. Our analysis involves characterizing the efficiency and false-positive rates of our moving-object detection pipeline, enabling us to construct a Bayesian signal probability for each identified source. By employing this procedure, we can treat all detected Kuiper Belt Objects (KBOs) statistically, while simultaneously accounting for efficiency and false positives. As a result of our analysis, we found around 2300 Kuiper Belt Object detections with a signal-to-noise ratio (S/N) greater than 6.5. Leveraging these objects, we compute the luminosity function of the Kuiper Belt as a whole, including the Cold Classical (CC) population. Additionally, we investigate the absolute magnitude (H) distribution of the CCs, finding consistency with an exponentially tapered power-law, as predicted by streaming instability models of planetesimal formation. We plan to extend our search through the Jovian Trojans, the other primitive minor planet population of the solar system in the near future.