OSSOS III—Resonant trans-Neptunian populations: constraints from the first quarter of the Outer Solar System Origins Survey

Volk, Kathryn; Murray-Clay, Ruth; Gladman, Brett; Lawler, Samantha; Bannister, Michele T.; Kavelaars, J. J.; Petit, Jean-Marc; Gwyn, Stephen; Alexandersen, Mike; Chen, Ying-Tung; Lykawka, Patryk Sofia; Ip, Wing; Lin, Hsing Wen

doi:10.3847/0004-6256/152/1/23

All Reviews

AstronomyMust Read

intermediate

OSSOS III—Resonant trans-Neptunian populations: constraints from the first quarter of the Outer Solar System Origins Survey

Volk, Kathryn et al. (2016)

Published: Jul 1, 2016
DOI: 10.3847/0004-6256/152/1/23

View Original

At a GlanceAI

First OSSOS resonant sample independently confirms CFEPS models and that the 5:2 is overpopulated relative to theory.

SummaryAI

Using the 31 securely resonant TNOs from the first two OSSOS sky blocks, the authors check the CFEPS resonant population models and find broad agreement. The high-eccentricity part of the 5:2 resonance is at least as populous as the 2:1 and possibly as the 3:2, more than migration models predict. OSSOS also finds 3:2 objects with libration amplitudes below the CFEPS cutoff, confirms a colder inclination distribution in the 2:1, and constrains the fractions of symmetric and leading-island asymmetric 2:1 librators, which depend on how Neptune migrated.

Method SnapshotAI

Characterized survey detections compared with resonant population models via a survey simulator.

BackgroundAI

Resonant libration modes (symmetric/asymmetric) and survey bias.

In Collections

Astronomy33 papers

The trans-Neptunian region: surveys, populations and dynamics

The region beyond Neptune holds leftovers of planet formation, and its orbital structure is a record of how the giant planets migrated. This collection goes from the systematic surveys that built the modern census (Deep Ecliptic Survey, CFEPS, OSSOS, the Dark Energy Survey search) through dynamical classification of thousands of objects and population estimates for Neptune's resonances, to resonance sticking, the scattered disk, the coupling between Kozai (ZLK) dynamics and mean-motion resonances, and the distant clustered orbits. It ends with what the next surveys (DEEP, CLASSY, LSST) are designed to answer. Terms: * TNO: trans-Neptunian object * MMR: mean-motion resonance * ZLK(R): von Zeipel-Lidov-Kozai (resonance) * DES: two different projects share this acronym here, the Deep Ecliptic Survey (2002, 2005) and the Dark Energy Survey (2022)

Evgeny Smirnov

Foundational papers from the foundational TNO project. Tons of new data.

— ES