Hostname: page-component-76fb5796d-zzh7m Total loading time: 0 Render date: 2024-04-26T01:19:18.437Z Has data issue: false hasContentIssue false
  • English
  • Français

Structure of Comets and the Possible Origin of Faint Asteroids

Published online by Cambridge University Press:  12 April 2016

V. Vanýsek
V. Vanýsek*
Affiliation:
Charles University, Prague

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

It is shown that very old and still active icy-conglomerate or “clathrate” cometary nuclei may exist at the outer boundary of the asteroidal belt and belong to the group of relatively stable “outer” short-period comets of which only a small fraction have been discovered or recognized as cometary objects.hich is much more convincing, it explains their brightness dependence on the heliocentric distance.

The search for these comets among very faint asteroids with the mean motion μ ≤ 600”, and the study of their behavior could be very important to our knowledge about the final stage of cometary nuclei.

Type
Part II-Origin of Asteroids Interrelations with Comets, Meteorites, and Meteors
Information
International Astronomical Union Colloquium , Volume 12: Physical Studies of Minor Planets , 1971 , pp. 465 - 469
Copyright
Copyright © NASA 1971

References

Bouška, J. 1965, The Collisions of Asteroids. Bull. Astron. Inst. Czech. 16, 358.Google Scholar
Code, A.D., and Houck, T.E. 1970, OAO Observations of Comet 1969g and Comet 1969i. Bull. AAS 2, 321.Google Scholar
Delsemme, A.H., and Miller, D.C. 1970, Physico-Chemical Phenomena in Comets. II. Gas Adsorption in the Snows of the Nucleus. Planet. Space Sci. 18, 717–730.CrossRefGoogle Scholar
Donn, B., and Urey, H.C. 1957, Chemical Heating Processes in Astronomical Objects. Mém. Soc. Roy. Sci. Liège Ser. 4, vol. 18, pp. 124–132.Google Scholar
Harwit, M. 1968, “Spontaneously” Split Comets. Astrophys. J. 151, 789–790. CrossRefGoogle Scholar
Huebner, W.F. 1965, Über die Gasproduktion der Kometen. Z. Astrophys. 63, 22–34.Google Scholar
Kresák, L. 1965, On Two Aspects of Evolution of Short-Period Comets. Mém. Soc. Roy. Sci. Liège Ser. 5, vol. 12, pp. 459–467.Google Scholar
Kresák, L. 1971, The Dividing Line Between Cometary and “Asteroidal Orbits.” The Motion, Evolution of Orbits and Origin of Comets, IAU Symp. 45. D. Reidel. Dordrecht. In press.Google Scholar
Pittich, E.M. 1969, Sudden Changes in the Brightness of Comets Before Their Discovery. Bull. Astron. Inst. Czech. 20, 251–292.Google Scholar
Pittich, E.M. 1971, The Motion, Evolution of Orbits and Origin of Comets, IAU Symp. 45. D. Reidel. Dordrecht. In press.Google Scholar
Stefanik, R.P. 1965, On Thirteen Split Comets. Mém. Soc. Roy. Sei. Liege Ser. 5, vol. 12, pp. 29–32.Google Scholar
Urey, H.C. 1952, The Planets. Yale Univ. Press. New Haven.Google Scholar
Whipple, F.L. 1950, A Comet Model. I. The Acceleration of Comet Encke. Astrophys. J. 111, 375–394.CrossRefGoogle Scholar
Whipple, F.L. 1951, A Comet Model. II. Physical Relations for Comets and Meteors. Astrophys. J. 113, 464–474.CrossRefGoogle Scholar
Whipple, F.L., and Stefanik, R.P. 1965, On the Physics and Splitting of Cometary Nuclei. Mém. Soc. Roy. Sci. Liège Ser. 5, vol. 12, pp. 33–52.Google Scholar