OSSOS. XIX. Testing Early Solar System Dynamical Models Using OSSOS Centaur Detections
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405850" target="_blank" >RIV/00216208:11320/19:10405850 - isvavai.cz</a>
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=sdqV-ZX3GY" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=sdqV-ZX3GY</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-3881/ab3651" target="_blank" >10.3847/1538-3881/ab3651</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
OSSOS. XIX. Testing Early Solar System Dynamical Models Using OSSOS Centaur Detections
Popis výsledku v původním jazyce
We use published models of the early solar system evolution with a slow, long-range and grainy migration of Neptune to predict the orbital element distributions and the number of modern-day Centaurs. The model distributions are biased by the Outer Solar System Origins Survey (OSSOS) simulator and compared with the OSSOS Centaur detections. We find an excellent match to the observed orbital distribution, including the wide range of orbital inclinations which was the most troublesome characteristic to fit in previous models. A dynamical model, in which the original population of outer disk planetesimals was calibrated from Jupiter trojans, is used to predict that OSSOS should detect 11 +/- 4 Centaurs with semimajor axes of a < 30 au, perihelion distances of q > 7.5 au, and diameter of D > 10km (absolute magnitude H-r < 13.7 for a 6% albedo). This is consistent with 15 actual OSSOS Centaur detections with H-r < 13.7. The population of Centaurs is estimated to be 21,000 +/- 8000 for D > 10 km. The inner scattered disk at 50 < a < 200 au should contain (2.0 +/- 0.8) x 10(7) D > 10km bodies and the Oort cloud should contain (5.0 +/- 1.9) x 10(8) D > 10 km comets. Population estimates for different diameter cutoffs can be obtained from the size distribution of Jupiter trojans (N(>D) proportional to D-2.1 for 5 < D < 100 km). We discuss model predictions for the Large Synoptic Survey Telescope observations of Centaurs.
Název v anglickém jazyce
OSSOS. XIX. Testing Early Solar System Dynamical Models Using OSSOS Centaur Detections
Popis výsledku anglicky
We use published models of the early solar system evolution with a slow, long-range and grainy migration of Neptune to predict the orbital element distributions and the number of modern-day Centaurs. The model distributions are biased by the Outer Solar System Origins Survey (OSSOS) simulator and compared with the OSSOS Centaur detections. We find an excellent match to the observed orbital distribution, including the wide range of orbital inclinations which was the most troublesome characteristic to fit in previous models. A dynamical model, in which the original population of outer disk planetesimals was calibrated from Jupiter trojans, is used to predict that OSSOS should detect 11 +/- 4 Centaurs with semimajor axes of a < 30 au, perihelion distances of q > 7.5 au, and diameter of D > 10km (absolute magnitude H-r < 13.7 for a 6% albedo). This is consistent with 15 actual OSSOS Centaur detections with H-r < 13.7. The population of Centaurs is estimated to be 21,000 +/- 8000 for D > 10 km. The inner scattered disk at 50 < a < 200 au should contain (2.0 +/- 0.8) x 10(7) D > 10km bodies and the Oort cloud should contain (5.0 +/- 1.9) x 10(8) D > 10 km comets. Population estimates for different diameter cutoffs can be obtained from the size distribution of Jupiter trojans (N(>D) proportional to D-2.1 for 5 < D < 100 km). We discuss model predictions for the Large Synoptic Survey Telescope observations of Centaurs.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10308 - Astronomy (including astrophysics,space science)
Návaznosti výsledku
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)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
The Astronomical Journal
ISSN
0004-6256
e-ISSN
—
Svazek periodika
158
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
6
Strana od-do
132
Kód UT WoS článku
000484525100001
EID výsledku v databázi Scopus
2-s2.0-85072370837