Tuning the Legacy Survey of Space and Time (LSST) Observing Strategy for Solar System Science: Incremental Templates in Year 1

作     者：Robinson, James E. Schwamb, Megan E. Jones, R. Lynne Jurić, Mario Yoachim, Peter Bolin, Bryce T. Chandler, Colin O. Chesley, Steven R. Fedorets, Grigori Fraser, Wesley C. Greenstreet, Sarah Hsieh, Henry H. McGinley, Lauren J. Merritt, Stephanie R. Opitom, Cyrielle Parejko, John K. 

作者机构：Institute for Astronomy University of Edinburgh Royal Observatory Edinburgh Blackford Hill EdinburghEH9 3HJ United Kingdom Astrophysics Research Centre School of Mathematics and Physics Queen’s University Belfast BelfastBT7 1NN United Kingdom Rubin Observatory 950 N. Cherry Ave. TucsonAZ85719 United States Aerotek Suite 150 4321 Still Creek Drive BurnabyBCV5C6S Canada Department of Astronomy the DiRAC Institute University of Washington 3910 15th Ave NE SeattleWA98195 United States Eureka Scientific Inc. 2452 Delmer Street Suite 100 OaklandCA94602-3017 United States LSST Interdisciplinary Network for Collaboration and Computing 933 N. Cherry Avenue TucsonAZ85721 United States Department of Astronomy & Planetary Science Northern Arizona University P.O. Box 6010 FlagstaffAZ86011 United States Raw Data Speaks Initiative United States Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr. PasadenaCA91109 United States Finnish Centre for Astronomy with ESO University of Turku TurkuFI-20014 Finland Department of Physics University of Helsinki P.O. Box 64 Helsinki00014 Finland Herzberg Astronomy and Astrophysics Research Centre National Research Council 5071 W. Saanich Rd. VictoriaBCV9E 2E7 Canada Rubin Observatory/NSF NOIRLab 950 N. Cherry Ave TucsonAZ85719 United States Planetary Science Institute 1700 East Fort Lowell Rd. Suite 106 TucsonAZ85719 United States Department of Astronomy University of Washington 3910 15th Ave NE SeattleWA98195 United States 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2024年

核心收录：

主　　题：Solar system 

摘      要：The Vera C. Rubin Observatory is due to commence the 10-year Legacy Survey of Space and Time (LSST) at the end of 2025. To detect transient/variable sources and identify solar system objects (SSOs), the processing pipelines require templates of the static sky to perform difference imaging. During the first year of the LSST, templates must be generated as the survey progresses, otherwise SSOs cannot be discovered nightly. The incremental template generation strategy has not been finalized;therefore, we use the Metric Analysis Framework (MAF) and a simulation of the survey cadence (one snap v4.0 10yrs) to explore template generation in Year 1. We have assessed the effects of generating templates over timescales of days-weeks, when at least four images of sufficient quality are available for ≥ 90% of the visit. We predict that SSO discoveries will begin ∼2-3 months after the start of the survey. We find that the ability of the LSST to discover SSOs in real-time is reduced in Year 1. This is especially true for detections in areas of the sky that receive fewer visits, such as the North Ecliptic Spur (NES), and in less commonly used filters, such as the u and g-bands. The lack of templates in the NES dominates the loss of real-time SSO discoveries;across the whole sky the MAF Main-Belt asteroid (MBA) discovery metric decreases by up to 63% compared to the baseline observing strategy, whereas the metric decreases by up to 79% for MBAs in the NES alone. © 2024, CC BY.