Predictions of the LSST Solar System Yield: Neptune Trojans

Fuente: arXiv
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Auteurs principaux: Murtagh, Joseph, Schwamb, Megan E., Bernardinelli, Pedro H., Lin, Hsing Wen, Kurlander, Jacob A., Merritt, Stephanie R., Cornwall, Samuel, Jurić, Mario, Fedorets, Grigori, Holman, Matthew J., Eggl, Siegfried, Jones, R. Lynne, Yoachim, Peter, Moeyens, Joachim, Kubica, Jeremy, Oldag, Drew, West, Maxine, Chandler, Colin Orion
Format: Preprint
Publié: 2025
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author Murtagh, Joseph
Schwamb, Megan E.
Bernardinelli, Pedro H.
Lin, Hsing Wen
Kurlander, Jacob A.
Merritt, Stephanie R.
Cornwall, Samuel
Jurić, Mario
Fedorets, Grigori
Holman, Matthew J.
Eggl, Siegfried
Jones, R. Lynne
Yoachim, Peter
Moeyens, Joachim
Kubica, Jeremy
Oldag, Drew
West, Maxine
Chandler, Colin Orion
author_facet Murtagh, Joseph
Schwamb, Megan E.
Bernardinelli, Pedro H.
Lin, Hsing Wen
Kurlander, Jacob A.
Merritt, Stephanie R.
Cornwall, Samuel
Jurić, Mario
Fedorets, Grigori
Holman, Matthew J.
Eggl, Siegfried
Jones, R. Lynne
Yoachim, Peter
Moeyens, Joachim
Kubica, Jeremy
Oldag, Drew
West, Maxine
Chandler, Colin Orion
contents The NSF-DOE Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST), beginning full operations in late 2025, will dramatically transform solar system science by vastly expanding discoveries and providing detailed characterization opportunities across all small body populations. This includes the co-orbiting 1:1 resonant Neptune Trojans, which are thought to be dynamically hot captures from the protoplanetary disk. Using the survey simulator $\texttt{Sorcha}$, combined with the latest LSST cadence simulations, we present the very first predictions for the Neptune Trojan yield within the LSST. We forecast a model-dependent median number of $\sim130-300$ discovered Neptune Trojans, and infer a notable 2:1 detection bias toward the recently emerged L5 cloud near the galactic plane versus the L4 cloud, reflecting the lower-cadence coverage in the Northern Ecliptic Spur region that suppresses L4 detections. The additionally simulated Science Validation survey will offer the very first early insights into this understudied cloud. Around 60\% of detected main survey Neptune Trojans will meet stringent color light curve quality criteria, increasing the sample size more than fourfold compared to existing datasets. This enhanced sample will enable robust statistical analyses of Neptune Trojan color and size distributions, crucial for understanding their origins and relationship to the broader trans-Neptunian population. These comprehensive color measurements represent a major step forward in characterizing the Neptune Trojan population and will facilitate future targeted spectroscopic observations.
format Preprint
id arxiv_https___arxiv_org_abs_2512_03892
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Predictions of the LSST Solar System Yield: Neptune Trojans
Murtagh, Joseph
Schwamb, Megan E.
Bernardinelli, Pedro H.
Lin, Hsing Wen
Kurlander, Jacob A.
Merritt, Stephanie R.
Cornwall, Samuel
Jurić, Mario
Fedorets, Grigori
Holman, Matthew J.
Eggl, Siegfried
Jones, R. Lynne
Yoachim, Peter
Moeyens, Joachim
Kubica, Jeremy
Oldag, Drew
West, Maxine
Chandler, Colin Orion
Earth and Planetary Astrophysics
The NSF-DOE Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST), beginning full operations in late 2025, will dramatically transform solar system science by vastly expanding discoveries and providing detailed characterization opportunities across all small body populations. This includes the co-orbiting 1:1 resonant Neptune Trojans, which are thought to be dynamically hot captures from the protoplanetary disk. Using the survey simulator $\texttt{Sorcha}$, combined with the latest LSST cadence simulations, we present the very first predictions for the Neptune Trojan yield within the LSST. We forecast a model-dependent median number of $\sim130-300$ discovered Neptune Trojans, and infer a notable 2:1 detection bias toward the recently emerged L5 cloud near the galactic plane versus the L4 cloud, reflecting the lower-cadence coverage in the Northern Ecliptic Spur region that suppresses L4 detections. The additionally simulated Science Validation survey will offer the very first early insights into this understudied cloud. Around 60\% of detected main survey Neptune Trojans will meet stringent color light curve quality criteria, increasing the sample size more than fourfold compared to existing datasets. This enhanced sample will enable robust statistical analyses of Neptune Trojan color and size distributions, crucial for understanding their origins and relationship to the broader trans-Neptunian population. These comprehensive color measurements represent a major step forward in characterizing the Neptune Trojan population and will facilitate future targeted spectroscopic observations.
title Predictions of the LSST Solar System Yield: Neptune Trojans
topic Earth and Planetary Astrophysics
url https://arxiv.org/abs/2512.03892