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OSSOS. XIX. Testing Early Solar System Dynamical Models Using OSSOS Centaur Detections

The result's identifiers

  • Result code in 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>

  • Result on the web

    <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>

Alternative languages

  • Result language

    angličtina

  • Original language name

    OSSOS. XIX. Testing Early Solar System Dynamical Models Using OSSOS Centaur Detections

  • Original language description

    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 &lt; 30 au, perihelion distances of q &gt; 7.5 au, and diameter of D &gt; 10km (absolute magnitude H-r &lt; 13.7 for a 6% albedo). This is consistent with 15 actual OSSOS Centaur detections with H-r &lt; 13.7. The population of Centaurs is estimated to be 21,000 +/- 8000 for D &gt; 10 km. The inner scattered disk at 50 &lt; a &lt; 200 au should contain (2.0 +/- 0.8) x 10(7) D &gt; 10km bodies and the Oort cloud should contain (5.0 +/- 1.9) x 10(8) D &gt; 10 km comets. Population estimates for different diameter cutoffs can be obtained from the size distribution of Jupiter trojans (N(&gt;D) proportional to D-2.1 for 5 &lt; D &lt; 100 km). We discuss model predictions for the Large Synoptic Survey Telescope observations of Centaurs.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - 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)

Result continuities

  • 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)

Others

  • Publication year

    2019

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    The Astronomical Journal

  • ISSN

    0004-6256

  • e-ISSN

  • Volume of the periodical

    158

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    6

  • Pages from-to

    132

  • UT code for WoS article

    000484525100001

  • EID of the result in the Scopus database

    2-s2.0-85072370837