Keck, gemini, and palomar 200-inch visible photometry of red and very-red neptunian trojans

被引：8

作者：

Bolin, B. T. ^{[1
,2
,3
]}

Fremling, C. ^{[2
,4
]}

Morbidelli, A. ^{[5
,6
]}

Noll, K. S. ^{[1
]}

van Roestel, J. ^{[2
,7
]}

Deibert, E. K. ^{[8
]}

Delbo, M. ^{[5
]}

Gimeno, G. ^{[8
]}

Heo, J-E ^{[8
]}

Lisse, C. M. ^{[9
]}

Seccull, T. ^{[10
]}

Suh, H. ^{[10
]}

机构：

[1] Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA

[2] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA

[3] CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA

[4] CALTECH, Caltech Opt Observ, Pasadena, CA 91125 USA

[5] Univ Nice Sophia Antipolis, CNRS, Observ Cote Azur, Lab Lagrange,UMR7293, F-06300 Nice, France

[6] Coll France, F-75231 Paris, France

[7] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands

[8] NSFs Natl Opt Astron Res Lab, Gemini Observ, Casilla 603, La Serena, Chile

[9] Johns Hopkins Univ, Appl Phys Lab, 11100 Johns Hopkins Rd, Laurel, MD 20723 USA

[10] NSFs NOIRLab, Gemini Observ, 670 N Aohoku Pl, Hilo, HI 96720 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 521卷 / 01期

关键词：

Kuiper Belt: general; minor planets; asteroids: general; APACHE POINT; COLOR; INCLINATION; MAGNITUDE; OSSOS; DISTRIBUTIONS; SEARCH; GROWTH; ZTF;

D O I：

10.1093/mnrasl/slad018

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 disc 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 disc. 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 approximate to 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 disc was interior to 30 - 35 au.

引用

页码：L29 / L33

页数：5

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