Simulating the Legacy Survey of Space and Time stellar content with TRILEGAL
Piero Dal Tio, Giada Pastorelli, Alessandro Mazzi, Michele Trabucchi,, Guglielmo Costa, Alice Jacques, Adriano Pieres, L\'eo Girardi, Yang Chen,, Knut A.G. Olsen, Mario Juric, \v{Z}eljko Ivezi\'c, Peter Yoachim, William I., Clarkson, Paola Marigo, Thaise S. Rodrigues

TL;DR
This paper presents a comprehensive simulation of the stellar content expected in the LSST survey using the TRILEGAL code, including detailed star and binary populations, to aid in survey planning and analysis.
Contribution
It introduces a large-scale, detailed simulation of LSST stellar observations with new binary star modeling and comparisons to real data, enhancing predictive capabilities.
Findings
Simulated star counts match observed data.
Predicted numbers of variable stars and binaries.
Crowding limits depend on seeing and filter conditions.
Abstract
We describe a large simulation of the stars to be observed by the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). The simulation is based on the TRILEGAL code, which resorts to large databases of stellar evolutionary tracks, synthetic spectra, and pulsation models, added to simple prescriptions for the stellar density and star formation histories of the main structures of the Galaxy, to generate mock stellar samples through a population synthesis approach. The main bodies of the Magellanic Clouds are also included. A complete simulation is provided for single stars, down to the mag depth of the co-added wide-fast-deep survey images. A second simulation is provided for a fraction of the binaries, including the interacting ones, as derived with the BinaPSE module of TRILEGAL. We illustrate the main properties and numbers derived from these simulations,…
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Taxonomy
TopicsAstronomy and Astrophysical Research · Stellar, planetary, and galactic studies · Astronomical Observations and Instrumentation
