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- W4320342308 abstract "Neptunian Trojans (NTs), trans-Neptunian objects in 1:1 mean-motion resonance with Neptune, are generally thought to have been captured from the original trans-Neptunian protoplanetary disk into co-orbital resonance with the ice giant during its outward migration. It is possible, therefore, that the colour distribution of NTs is a constraint on the location of any colour transition zones that may have been present in the disk. In support of this possible test, we obtained $g$, $r$, and $i$-band observations of 18 NTs, more than doubling the sample of NTs with known visible colours to 31 objects. Out of the combined sample, we found $approx$4 objects with $g$-$i$ colours of $>$1.2 mags placing them in the very red (VR) category as typically defined. We find, without taking observational selection effects into account, that the NT $g$-$i$ colour distribution is statistically distinct from other trans-Neptunian dynamical classes. The optical colours of Jovian Trojans and NTs are shown to be less similar than previously claimed with additional VR NTs. The presence of VR objects among the NTs may suggest that the location of the red to VR colour transition zone in the protoplanetary disk was interior to 30-35 au." @default.
- W4320342308 created "2023-02-13" @default.
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- W4320342308 date "2023-02-08" @default.
- W4320342308 modified "2023-09-26" @default.
- W4320342308 title "Keck, Gemini, and Palomar 200-inch visible photometry of red and very-red Neptunian Trojans" @default.
- W4320342308 doi "https://doi.org/10.48550/arxiv.2302.04280" @default.
- W4320342308 hasPublicationYear "2023" @default.
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