The CaO orange system in meteor spectra

0494620 - ASÚ 2019 RIV US eng J - Článek v odborném periodiku
Berezhnoy, A.A. - Borovička, Jiří - Santos, J. - Rivas-Silva, J.F. - Sandoval, L. - Stolyarov, A.V. - Palma, A.
The CaO orange system in meteor spectra.
Planetary and Space Science. Roč. 151, February (2018), s. 27-32. ISSN 0032-0633. E-ISSN 1873-5088
Institucionální podpora: RVO:67985815
Klíčová slova: CaO orange system * meteor spectra * chemistry of impact events
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 1.815, rok: 2018

The CaO orange band system was simulated in the region 5900-6300 angstrom and compared with the experimentally observed spectra of Benesov bolide wake. The required vibronic Einstein emission coefficients were estimated by means of the experimental radiative lifetimes under the simplest Franck-Condon approximation. A moderate agreement was achieved, and the largest uncertainties come from modeling shape of FeO orange bands. Using a simple model the CaO column density in the wake of the Bendov bolide at the height of 29 km was estimated as (5 +/- 2) x 10(14) cm(-2) by a comparison of the present CaO spectra with the MO bands nicely observed at 4600-5200 angstrom in the same spectrum. The obtained CaO content is in a good agreement with the quenching model developed for the impact-produced cloud, although future theoretical and experimental studies of both CaO and FeO orange systems contribution would be needed to confirm these results.
Trvalý link: http://hdl.handle.net/11104/0287731