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Ground-Based Optical Deep Pencil Beam Surveys

Published online by Cambridge University Press:  26 May 2016

P. C. Boeshaar  and
V. Margoniner
P. C. Boeshaar
Affiliation:
Drew University
V. Margoniner
Affiliation:
Bell Laboratories, Lucent Technologies and the Deep Lens Survey Team

Abstract

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The initial results of the Deep Lens Survey (http://dls.bell-labs.com) to identify possible brown dwarfs and extremely metal poor red halo subdwarfs near the hydrogen burning limit are presented. Individual deep CCD high galactic latitude survey fields appear to offer a low probability of discovering field BD's, but taken collectively offer an opportunity to begin addressing questions regarding the scale height and distribution of these objects. In all likelihood, the very depth of such surveys will greatly increase our knowledge of the coolest extreme halo objects, which currently are known in far fewer numbers than T dwarfs. Ultimately, the large volume surveyed by the Large Synoptic Survey Telescope will identify vast numbers of such objects, providing a more complete picture of their spatial distribution.

Type
Part 5. Imaging Searches for Mature Ultracool Dwarfs
Information
Symposium - International Astronomical Union , Volume 211: Brown Dwarfs , 2003 , pp. 203 - 210
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Beers, T.C., Rossi, S., Norris, J.E., Ryan, S.G., Molaro, P., Rebolo, R. 1998, Space Science Reviews, 84, Issue 1/2, 139 Google Scholar
Boeshaar, PC., Tyson, J.A., Seitzer, P.O., 1986, Dark Matter in the Universe, Knapp, G. and Kormendy, J. eds. (Dordrecht, Reidel), 32 Google Scholar
Boeshaar, P.C., Tyson, J.A., Bernstein, G. 1994, A.S.P Conf. Ser., 64 ed. Caillault, J.P., 64 Google Scholar
Bruzual, G., Chariot, S. 1993, ApJ 405, 538 Google Scholar
Dahn, C.C., Liebert, J.W., Harris, H., Guetter, H.C. 1995, in The Bottom of the Main Sequence and Beyond, ed. Tinney, C.J., Springer, Heidelberg, 239 Google Scholar
Dahn, C.C. 1996, private communication.Google Scholar
Dahn, C.C., Harris, H.C., Vrba, F.J. et al. 2002, AJ, in press (astro-ph/0205050) Google Scholar
Gizis, J. E. 1997, AJ, 113, 806 Google Scholar
Gizis, J.E., Reid, I.N. 2002, PASP, 112, 610 Google Scholar
Gullixson, C.A., Boeshaar, P.C., Tyson, J.A. 1995, ApJS, 99, 281 Google Scholar
Hartwick, F.D.A., Cowley, A. P., Mould, J. R. 1984, ApJ, 286, 269 Google Scholar
Liu, M.C., Wainscoat, R., Martín, E.L., Barris, B., Tonry, J. 2002, ApJ, 568, L107 Google Scholar
Reid, I.N., Yan, L., Majewski, S., Thompson, I., Smail, I. 1996, AJ, 112, 1472 Google Scholar
Reid, I.N., Hawley, S.L., 2000, New Light On Dark Stars: Red Dwarfs, Low Mass Stars, Brown Dwarfs, 436 Google Scholar
Tiede, G.P., Dey, A., Jannuzi, B.T., Brown, M.J.I., Ryan, E., Najita, J.R. 2002, BAAS, 33, 1487 Google Scholar
Tyson, J. A., Boeshaar, P.C. 1997, Proceedings of Dark Matter '96: The Physics of Dark Matter, ed. Spooner, N., World Scientific, 164 Google Scholar