Binary survival in the outer solar system

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405396" target="_blank" >RIV/00216208:11320/19:10405396 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=mKMHFMBi1r" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=mKMHFMBi1r</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.icarus.2019.04.030" target="_blank" >10.1016/j.icarus.2019.04.030</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Binary survival in the outer solar system

Popis výsledku v původním jazyce

As indicated by their special characteristics, the cold classical Kuiper belt objects (KBOs) formed and survived at similar or equal to 42-47 au. Notably, they show a large fraction of equal-size binaries whose formation is probably related to the accretion of KBOs themselves. These binaries are uncommon in other -hot, resonant, scattered populations, which are thought to have been implanted from the massive disk below 30 au to &gt; 30 au during Neptune&apos;s migration. Here we highlight the possibility that equal-size binaries formed in the disk but were subsequently removed by impacts and/or dynamical effects (e.g., scattering encounters with Neptune). We determine the dependence of these processes on the size and separation of binary components. Our results indicate that tighter binaries, if they formed in the massive disk, have relatively good chances of survival (unless the disk was long-lived). In contrast, the widest binaries in the hot population, such as 2002 VF130, have a very low survival probability (&lt; 1%) even if the massive disk was short-lived. They may represent a trace of lucky survivors of a much larger population of the original disk binaries, or they formed at similar to 30-40 au and dodged the impact- and encounter-related perturbations that we studied here. We find that all known satellites of the largest KBOs would survive during the dynamical implantation of these bodies in the Kuiper belt. The low orbital eccentricities of Pluto&apos;s small moons may have been excited by impacts and/or encounters of the Pluto system to Neptune.

Název v anglickém jazyce

Binary survival in the outer solar system

Popis výsledku anglicky

As indicated by their special characteristics, the cold classical Kuiper belt objects (KBOs) formed and survived at similar or equal to 42-47 au. Notably, they show a large fraction of equal-size binaries whose formation is probably related to the accretion of KBOs themselves. These binaries are uncommon in other -hot, resonant, scattered populations, which are thought to have been implanted from the massive disk below 30 au to &gt; 30 au during Neptune&apos;s migration. Here we highlight the possibility that equal-size binaries formed in the disk but were subsequently removed by impacts and/or dynamical effects (e.g., scattering encounters with Neptune). We determine the dependence of these processes on the size and separation of binary components. Our results indicate that tighter binaries, if they formed in the massive disk, have relatively good chances of survival (unless the disk was long-lived). In contrast, the widest binaries in the hot population, such as 2002 VF130, have a very low survival probability (&lt; 1%) even if the massive disk was short-lived. They may represent a trace of lucky survivors of a much larger population of the original disk binaries, or they formed at similar to 30-40 au and dodged the impact- and encounter-related perturbations that we studied here. We find that all known satellites of the largest KBOs would survive during the dynamical implantation of these bodies in the Kuiper belt. The low orbital eccentricities of Pluto&apos;s small moons may have been excited by impacts and/or encounters of the Pluto system to Neptune.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GA18-06083S" target="_blank" >GA18-06083S: Vývoj pevných těles v protoplanetárních discích a během kolizí</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Icarus

ISSN

0019-1035

e-ISSN

—

Svazek periodika

331

Číslo periodika v rámci svazku

říjen

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

49-61

Kód UT WoS článku

000473554600004

EID výsledku v databázi Scopus

2-s2.0-85065608743