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Physical properties of Taurid meteoroids of various sizes
- Source :
- Planetary and Space Science. 182:104849
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- The origin of the Taurid complex is still debated. In addition to comet 2P/Encke, various asteroids were proposed to be members of the complex and thus possible parent bodies of Taurid meteoroids. Studies of physical properties of Taurid meteoroids can provide constrains on their source. We used a well defined orbital sample of 16 Taurid fireballs with detailed radiometric light curves. The sample represented meteoroids of initial masses from 8 grams to 650 kg (diameters 1 - 70 cm). The semi-empirical fragmentation model was used to study their atmospheric fragmentation and derive strength distribution within the meteoroids. It was found that small meteoroids are stronger than large ones. When considering Taurid material as a whole, the majority has a very low strength of less than 0.01 MPa and a density less than 1000 kg/m3. The low strength material exists mostly as large bodies (>10 cm). If encountered in smaller bodies, it forms only a minor part. Stronger materials up to 0.3 MPa exist in Taurids as well, but the stronger material the rarer it is. Strong material forms small inclusions in large bodies or exists as small (cm-sized) separate bodies. These properties strongly suggest cometary origin of Taurids.<br />Accepted to Planetary and Space Science. 22 pages, 16 figures, 1 table. License CC-BY-NC-ND (required by the journal)
- Subjects :
- Earth and Planetary Astrophysics (astro-ph.EP)
Physics
010504 meteorology & atmospheric sciences
Meteoroid
Comet
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics
Light curve
01 natural sciences
Space and Planetary Science
Asteroid
0103 physical sciences
010303 astronomy & astrophysics
Astrophysics - Earth and Planetary Astrophysics
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 00320633
- Volume :
- 182
- Database :
- OpenAIRE
- Journal :
- Planetary and Space Science
- Accession number :
- edsair.doi.dedup.....4893a29898d668a8925655f68a344e5c