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The Taiwan-America Occultation Survey for Kuiper Belt Objects

Published online by Cambridge University Press:  12 April 2016

Sun-Kun King*
Affiliation:
Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 1-87, Nankang, Taipei, Taiwan 115, R.O.C.

Abstract

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The purpose of the TAOS project is to directly measure the number of Kuiper Belt Objects (KBOs) down to the typical size of cometary nuclei (a few km). In contrast to the direct detection of reflected light from a KBO by a large telescope where its brightness falls off roughly as the fourth power of its distance to the sun, an occultation survey relies on the light from the background stars thus is much less sensitive to that distance. The probability of such occultation events is so low that we will need to conduct 100 billion measurements per year in order to detect the ten to four thousand occultation events expected. Three small (20 inch), fast (f/1.9), wide-field (3 square degrees) robotic telescopes, equipped with a 2,048 × 2,048 CCD camera, are being deployed in central Taiwan. They will automatically monitor 3,000 stars every clear night for several years and operate in a coincidence mode so that the sequence and timing of a possible occultation event can be distinguished from false alarms. More telescopes on a north-south baseline so as to measure the size of an occultating KBO may be later added into the telescope array. We also anticipate a lot of byproducts on stellar astronomy based on the large amount (10,000 giga-bytes/year) of photometry data to be generated by TAOS.

Type
VI. Solar System Studies
Copyright
Copyright © Astronomical Society of the Pacific 2001

References

Axelrod, T. 1998, personal communicationGoogle Scholar
Allen, R.L. & Bernstein, G.M. 2000, astro-ph/0011037Google Scholar
Bailey, M.E. 1976, Nature, 259, 290 Google Scholar
Chiang, E.I. & Brown, M.E. 1999, AJ, 118, 1411 Google Scholar
Cook, K.H., Alcock, C., Axelrod, , & Lissauer, J. 1995, BAAS, 27, 1124 Google Scholar
Dyson, F.J. 1992, QJRAS, 33, 45 Google Scholar
Edgeworth, K.E. 1949, MNRAS, 109, 600 CrossRefGoogle Scholar
Hayashi, C. 1981, Prog. Theor. Phys. Suppl., 70, 35 Google Scholar
Hayashi, C. 1985, in Protostars and Planets II, 1100Google Scholar
Jewitt, D.C. & Luu, J.X. 1993, Nature, 362, 730 Google Scholar
Jewitt, D.C. 1999, Annu. Rev. Earth Planet. Sci., 27, 287 Google Scholar
Kenyon, S.J. & Luu, J.X. 1999, AJ, 118, 1101 Google Scholar
Kuiper, G.P. 1951, in Astrophysics: A Topical Symposium, ed. Hynek, J. A., (McGraw-Hill, New York), 357 Google Scholar
Liang, C. 1999, thesis (in preparation), UC Berkeley, USA Google Scholar
Pollack, J.B., Hubickyj, O., Bodenheimer, P., Lissauer, J., Podolak, M., & Greenzweig, Y. 1996, Icarus, 124, 62 Google Scholar
Weidenschilling, S. 1977, Ap&SS, 51, 153 Google Scholar