0434832 - ASÚ 2015 RIV NL eng J - Článek v odborném periodiku
Borovička, Jiří - Koten, Pavel - Shrbený, Lukáš - Štork, Rostislav - Hornoch, Kamil
Spectral, Photometric, and Dynamic Analysis of Eight Draconid Meteors.
Earth, Moon, and Planets. Roč. 113, 1-4 (2014), s. 15-31. ISSN 0167-9295. E-ISSN 1573-0794
Grant CEP: GA ČR(CZ) GAP209/11/1382; GA ČR GPP209/11/P651; GA ČR GA205/09/1302
Institucionální podpora: RVO:67985815
Klíčová slova: meteors * meteoroids * Draconids
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
Impakt faktor: 0.667, rok: 2014

We analyzed spectra, trajectories, orbits, light curves, and decelerations of eight Draconid meteors observed from Northern Italy on October 8, 2011. Meteor morphologies of two of the meteors are also presented, one of them obtained with a high resolution camera. Meteor radiants agree with theoretical predictions, with a hint that some meteors may belong to the pre-1900 meteoroid trails. The spectra confirm that Draconids have normal chondritic composition of main elements (Mg, Fe, Na). There are, nevertheless, differences in the temporal evolution of Na line emission. The differences are correlated with the shapes of the light curves and the deceleration rates. Our data confirm that Draconids are porous conglomerates of grains, nevertheless, significant differences in the atmospheric fragmentation of cm-sized Draconids were found. Various textures with various resistance to fragmentation exist among Draconid meteoroids and even within single meteoroids.
Trvalý link: http://hdl.handle.net/11104/0238816