Tackling the FeO orange band puzzle in meteor and airglow spectra through combined astronomical and laboratory studies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00548960" target="_blank" >RIV/67985815:_____/21:00548960 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1093/mnras/staa3487" target="_blank" >https://doi.org/10.1093/mnras/staa3487</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/staa3487" target="_blank" >10.1093/mnras/staa3487</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tackling the FeO orange band puzzle in meteor and airglow spectra through combined astronomical and laboratory studies

Popis výsledku v původním jazyce

The iron oxide 'orange arc' bands are unambiguously detected in persistent meteor trains, meteor wakes, and clouds, as well as in the terrestrial airglow. In contrast to the majority of other astronomically important diatomic molecules, theoretical simulation of the FeO rovibronic spectra is not feasible due to the extremely condensed and strongly perturbed multiplet structure of its excited states. In this work, the time-evolution of the laser-induced breakdown spectra (LIBS) of high-purity iron recorded in air at high temperature and impact conditions is used to mimic the FeO pseudo-continuum emission observed during meteor events and the terrestrial night airglow. The relative intensity distributions in the structural continuum of the LIBS spectra are measured at 530-660 nm and a plasma temperature of 1500-6500 K. The anomalous increase of the intensity observed at 620-640 nm and temperature < 2000 K could be attributed to the emission of higher oxides of iron as explained by the conducted thermodynamic and kinetic modelling of iron burning in the atmosphere.

Název v anglickém jazyce

Tackling the FeO orange band puzzle in meteor and airglow spectra through combined astronomical and laboratory studies

Popis výsledku anglicky

The iron oxide 'orange arc' bands are unambiguously detected in persistent meteor trains, meteor wakes, and clouds, as well as in the terrestrial airglow. In contrast to the majority of other astronomically important diatomic molecules, theoretical simulation of the FeO rovibronic spectra is not feasible due to the extremely condensed and strongly perturbed multiplet structure of its excited states. In this work, the time-evolution of the laser-induced breakdown spectra (LIBS) of high-purity iron recorded in air at high temperature and impact conditions is used to mimic the FeO pseudo-continuum emission observed during meteor events and the terrestrial night airglow. The relative intensity distributions in the structural continuum of the LIBS spectra are measured at 530-660 nm and a plasma temperature of 1500-6500 K. The anomalous increase of the intensity observed at 620-640 nm and temperature < 2000 K could be attributed to the emission of higher oxides of iron as explained by the conducted thermodynamic and kinetic modelling of iron burning in the atmosphere.

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

2021

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

1365-2966

Svazek periodika

500

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

4296-4306

Kód UT WoS článku

000606297700003

EID výsledku v databázi Scopus

2-s2.0-85099682642