OSSOS XX: The Meaning of Kuiper Belt Colors

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10422459" target="_blank" >RIV/00216208:11320/20:10422459 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=mPt-3dZWz8" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=mPt-3dZWz8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-3881/ab98fb" target="_blank" >10.3847/1538-3881/ab98fb</a>

Result language

angličtina

Original language name

OSSOS XX: The Meaning of Kuiper Belt Colors

Original language description

Observations show that 100 km class Kuiper Belt objects (KBOs) can be divided into (at least) two color groups, red (R;g - i &lt; 1.2) and very red (VR;g - i &gt; 1.2), reflecting a difference in their surface composition. This is thought to imply that KBOs formed over a relatively wide range of radial distance,r. The cold classicals at 42 au r &lt; 47 au are predominantly VR, and known Neptune Trojans atr30 au are mostly R. Intriguingly, however, the dynamically hot KBOs show a mix of R and VR colors and no correlation of color withr. Here we perform migration/instability simulations where the Kuiper Belt is populated from an extended planetesimal disk. We find that the color observations can be best understood if R objects formed atr r* and VR objects atr &gt; r*, with 30 au r* r* &lt; 40 au would explain why the VR objects in the dynamically hot population have smaller orbital inclinations than the R objects, because the orbital excitation from Neptune weakens for orbits starting beyond 30 au. Possible causes of the R-VR color bimodality are discussed.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/GA18-06083S" target="_blank" >GA18-06083S: Evolution of solid bodies in protoplanetary disks and during collisions</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

The Astronomical Journal

ISSN

0004-6256

e-ISSN

—

Volume of the periodical

160

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

46

UT code for WoS article

000546813100001

EID of the result in the Scopus database

2-s2.0-85088030169