Asteroid rotation excitation by subcatastrophic impacts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F13%3A00069594" target="_blank" >RIV/00216224:14310/13:00069594 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985815:_____/13:00421271

Výsledek na webu

<a href="http://arxiv.org/abs/1304.7083" target="_blank" >http://arxiv.org/abs/1304.7083</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stt581" target="_blank" >10.1093/mnras/stt581</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Asteroid rotation excitation by subcatastrophic impacts

Popis výsledku v původním jazyce

Photometric observations of asteroids show that some of them are in non-principal axis rotation state (free precession), called tumbling. Collisions between asteroids have been proposed as a possible asteroid rotation excitation mechanism. We simulated subcatastrophic collisions between asteroids of various physical and material parameters to find out whether they could be responsible for the excited rotation. For every simulated target body after the collision, we computed its rotational lightcurve andwe found that tumbling was photometrically detectable for the rotational axis misalignment angle beta greater than about 15 deg. We found that subcatastrophic collisions are a plausible cause of non-principal axis rotation for small slowly rotating asteroids. The determining parameter is the ratio of the projectile orbital angular momentum to the target rotational angular momentum and we derived an approximate relation between this ratio and the angle beta.

Název v anglickém jazyce

Asteroid rotation excitation by subcatastrophic impacts

Popis výsledku anglicky

Photometric observations of asteroids show that some of them are in non-principal axis rotation state (free precession), called tumbling. Collisions between asteroids have been proposed as a possible asteroid rotation excitation mechanism. We simulated subcatastrophic collisions between asteroids of various physical and material parameters to find out whether they could be responsible for the excited rotation. For every simulated target body after the collision, we computed its rotational lightcurve andwe found that tumbling was photometrically detectable for the rotational axis misalignment angle beta greater than about 15 deg. We found that subcatastrophic collisions are a plausible cause of non-principal axis rotation for small slowly rotating asteroids. The determining parameter is the ratio of the projectile orbital angular momentum to the target rotational angular momentum and we derived an approximate relation between this ratio and the angle beta.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

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Svazek periodika

432

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

1623-1631

Kód UT WoS článku

000319832300059

EID výsledku v databázi Scopus

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