Models for the Origin of the Quadrantids |
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| Authors: | Tomoyasu Tanigawa Shinsuke Abe Masateru Ishiguro and Tadashi Mukai |
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| Institution: | (1) Sanda Shounkan Senior High School, Gakuen 1-1, Sanda Hyogo 669-1337, Japan;(2) Institute of Astronomy, National Central University, 300 Jhongda Road, Jhongli, Taoyuan, 32001, Taiwan;(3) Department of Physics and Astronomy, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Korea;(4) Kobe University, Nada, Kobe Hyogo 657-8501, Japan |
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| Abstract: | We present two scenarios for production of the Quadrantid stream based on two different models for its origin: the extinct
model in which 2003EH1 was an active comet that released the dust particles during past 5000 years, stopping its activity
abruptly in AD 1488; and the split model; in which a catastrophic disruption of an asteroid at AD 1488 released a large number
of dust particles in a single event. We calculate the orbital evolution of test particles released in both cases and derive
the resulting size distribution of surviving meteoroids in the current Quadrantid stream in the form of s
−α
ds, where s denotes the radius of a meteoroid. We find α = 3.1 in the extinct model and 2.0 in the split model. In addition, the radius
of the surviving meteoroids is derived as s >10 μm in the both models. We propose, based on our estimation of the infrared color ratio for the Quadrantid stream derived
from both models, that infrared observations of the Quadrantid stream may determine which origin model is more reasonable. |
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