Data on 824 fireballs observed by the digital cameras of the European Fireball Network in 2017-2018 II. Analysis of orbital and physical properties of centimeter-sized meteoroids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00567443" target="_blank" >RIV/67985815:_____/22:00567443 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0338700" target="_blank" >https://hdl.handle.net/11104/0338700</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202244197" target="_blank" >10.1051/0004-6361/202244197</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Data on 824 fireballs observed by the digital cameras of the European Fireball Network in 2017-2018 II. Analysis of orbital and physical properties of centimeter-sized meteoroids

Popis výsledku v původním jazyce

In this work, data on 824 fireballs presented in an accompanying paper and catalog are used. We propose a new empirical parameter for the classification of the physical properties of meteoroids, based on the maximum dynamic pressure suffered by the meteoroid in the atmosphere. We then compare the physical and orbital properties of meteoroids. We find that aphelion distance is a better indicator of asteroidal origin than the Tisserand parameter. Meteoroids with aphelia lower than 4.9 AU are mostly asteroidal, with the exception of the Taurids and α Capricornids associated with the comets 2P/Encke and 169P/NEAT, respectively. We found another population of strong meteoroids of probably asteroidal origin on orbits with either high eccentricities or high inclinations, and aphelia up to χ 7 AU. Among the meteoroid streams, the Geminids and η Virginids are the strongest, and Leonids and α Capricornids the weakest. We found fine orbital structures within the Geminid and Perseid streams. Four minor meteoroid streams from the working list of the International Astronomical Union were confirmed. No meteoroid with perihelion distance lower than 0.07 AU was detected. Spectra are available for some of the fireballs, and they enabled us to identify several iron meteoroids and meteoroids deficient in sodium. Recognition and frequency of fireballs leading to meteorite falls is also discussed.

Název v anglickém jazyce

Data on 824 fireballs observed by the digital cameras of the European Fireball Network in 2017-2018 II. Analysis of orbital and physical properties of centimeter-sized meteoroids

Popis výsledku anglicky

In this work, data on 824 fireballs presented in an accompanying paper and catalog are used. We propose a new empirical parameter for the classification of the physical properties of meteoroids, based on the maximum dynamic pressure suffered by the meteoroid in the atmosphere. We then compare the physical and orbital properties of meteoroids. We find that aphelion distance is a better indicator of asteroidal origin than the Tisserand parameter. Meteoroids with aphelia lower than 4.9 AU are mostly asteroidal, with the exception of the Taurids and α Capricornids associated with the comets 2P/Encke and 169P/NEAT, respectively. We found another population of strong meteoroids of probably asteroidal origin on orbits with either high eccentricities or high inclinations, and aphelia up to χ 7 AU. Among the meteoroid streams, the Geminids and η Virginids are the strongest, and Leonids and α Capricornids the weakest. We found fine orbital structures within the Geminid and Perseid streams. Four minor meteoroid streams from the working list of the International Astronomical Union were confirmed. No meteoroid with perihelion distance lower than 0.07 AU was detected. Spectra are available for some of the fireballs, and they enabled us to identify several iron meteoroids and meteoroids deficient in sodium. Recognition and frequency of fireballs leading to meteorite falls is also discussed.

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/GX19-26232X" target="_blank" >GX19-26232X: Mapování zdrojů meteoroidů z hlediska jejich složení a výskytu ve sluneční soustavě</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Svazek periodika

667

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

24

Strana od-do

A158

Kód UT WoS článku

000892293400007

EID výsledku v databázi Scopus

2-s2.0-85145192274