Material properties of transition objects 3200 Phaethon and 2003 EH1

0355125 - ASÚ 2011 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Borovička, Jiří - Koten, Pavel - Spurný, Pavel - Čapek, David - Shrbený, Lukáš - Štork, Rostislav
Material properties of transition objects 3200 Phaethon and 2003 EH1.
Icy Bodies of the Solar System. Cambridge: Cambridge University Press, 2010, s. 218-222. IAU Symposium Proceedings Series, IAU S263. ISBN 978-0-521-76488-9. ISSN 1743-9213.
[Symposium of the International Astronomical Union /263./. Rio de Janeiro (BR), 03.08.2009-07.08.2009]
Grant CEP: GA AV ČR IAA300030813; GA ČR GA205/09/1302
Výzkumný záměr: CEZ:AV0Z1003909
Klíčová slova: meteors * meteoroids * minor planets
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

Asteroids 3200 Phaethon and 196256 (2003 EH1) are connected with two major meteoroid streams, Geminids and Quadrantids, respectively. We have modeled the observed light curves and decelerations of Geminid and Quadrantid meteors and studied their spectra. In both cases, we have found typical bulk densities of about 2600 kg m(-3), much larger than in cometary meteoroids. Sodium was partially lost from Geminids and Quadrantids due to solar heating. The Quadrantid material was therefore not hidden deep inside the parent body 1500 years ago, when the perihelion was low enough for sodium loss to occur.
Trvalý link: http://hdl.handle.net/11104/0193965