Small iron meteoroids Observation and modeling of meteor light curves

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F19%3A00511000" target="_blank" >RIV/67985815:_____/19:00511000 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1051/0004-6361/201935203" target="_blank" >https://doi.org/10.1051/0004-6361/201935203</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201935203" target="_blank" >10.1051/0004-6361/201935203</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Small iron meteoroids Observation and modeling of meteor light curves

Popis výsledku v původním jazyce

The goals of the study are to observe faint, slow, low altitude meteors, to identify candidates for iron meteoroids among them, to model their ablation and light curves, and to determine their properties. The model is able to explain the majority of the selected light curves, and meteoroid parameters that are not directly observable - m(infinity), D-dr, and tau - are determined. Unlike in most meteor studies, the mass and luminous efficiency are determined independently. Luminous efficiency ranges from 0.08 to 5.8%. It weakly decreases with increasing initial meteoroid mass. No simple dependency on initial velocity was found. The mean size of iron drops depends on the meteoroid velocity. Slower meteoroids can produce drops with a wide range of mean sizes, whereas faster ones are better matched with larger drops with a smaller dispersion of sizes.

Název v anglickém jazyce

Small iron meteoroids Observation and modeling of meteor light curves

Popis výsledku anglicky

The goals of the study are to observe faint, slow, low altitude meteors, to identify candidates for iron meteoroids among them, to model their ablation and light curves, and to determine their properties. The model is able to explain the majority of the selected light curves, and meteoroid parameters that are not directly observable - m(infinity), D-dr, and tau - are determined. Unlike in most meteor studies, the mass and luminous efficiency are determined independently. Luminous efficiency ranges from 0.08 to 5.8%. It weakly decreases with increasing initial meteoroid mass. No simple dependency on initial velocity was found. The mean size of iron drops depends on the meteoroid velocity. Slower meteoroids can produce drops with a wide range of mean sizes, whereas faster ones are better matched with larger drops with a smaller dispersion of sizes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GA16-00761S" target="_blank" >GA16-00761S: Rozpady meteoroidů a malých asteroidů v zemské atmosféře</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Astronomy & Astrophysics

ISSN

1432-0746

e-ISSN

—

Svazek periodika

625

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

17

Strana od-do

A106

Kód UT WoS článku

000468380000008

EID výsledku v databázi Scopus

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