Research output per year
Research output per year
- 150 - 178 out of 178 results
Search results
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1996
A lower limit of 9.5 Gyr on the age of the Galactic disk from the oldest white dwarf stars
Oswalt, T. D., Smith, J. A., Wood, M. A., Hintzen, P., Hintzen, P. & Hintzen, P., Aug 1 1996, In: Nature. 382Research output: Contribution to journal › Article › peer-review
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Back to the Future: The SARA Observatory at Kitt Peak and the Future of Small Telescopes at National Sites
Oswalt, T. D., Sep 1 1996, In: IAPPP. 65Research output: Contribution to journal › Article › peer-review
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White Dwarfs in Wide Binaries: Calibrating the Age of the Galaxy
Ahrens, T. J., Oswalt, T. D., Smith, J. A. & Wood, M. A., Jun 1 1996, In: International Amateur-Professional Photoelectric Photometry Communications. 64Research output: Contribution to journal › Article › peer-review
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1995
A Peculiar New Variable Star Near the Wide Binary L266-18A/B
Oswalt, T. D. & Smith, J. A., Jun 1 1995, In: Information Bulletin on Variable Stars. 4215Research output: Contribution to journal › Article › peer-review
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Hubble Space Telescope observations of cool white dwarf stars: Detection of new species of heavy elements
Shipman, H. L., Barnhill, M., Barnhill, M., Provencal, J., Roby, S., Bues, I., Cordova, F., Hammond, G., Hintzen, P., Koester, D., Liebert, J., Oswalt, T., Starfield, S., Wegner, G. & Weideman, V., Mar 1 1995, In: The Astronomical Journal. 109Research output: Contribution to journal › Article › peer-review
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Progress Report on the SARA 0.9-m Telescope Project at Kitt Peak
Oswalt, T. D., Rafert, J. B., Powell, H. D., Shaw, J. S., Rumstay, K. S. & Webb, J. R., Sep 1 1995, In: International Amateur-Professional Photoelectric Photometry Communications. 61Research output: Contribution to journal › Article › peer-review
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Willem Jacob Luyten (1899-1994)
Oswalt, T. D., Jan 1 1995, In: IAPPP. 58Research output: Contribution to journal › Article › peer-review
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1992
Astronomy in Russia: A New Visitors' Program
Leiker, S., Oswalt, T., Stepanyan, J. & Neizvestny, S., Jun 1 1992, In: International Amateur-Professional Photoelectric Photometry Communications. 48Research output: Contribution to journal › Article › peer-review
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Possible Variability of Landolt Standard SA 103-526
Smith, J. A., Smith, B. J. & Oswalt, T. D., Mar 1 1992, In: International Amateur-Professional Photoelectric Photometry Communications. 47Research output: Contribution to journal › Article › peer-review
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The binary system L151-81A/B : a potential test of accretion theory
Wood, M. A. & Oswalt, T. D., Aug 1 1992, In: The Astrophysical Journal. 394Research output: Contribution to journal › Article › peer-review
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The SARA KITT Peak 0.9-m Telescope Project
Oswalt, T. D., Rafert, J. B., Wood, M. A., Castelaz, M. W., Collins, L. F., Henson, G. D., Powell, H. D., Caillault, J. P., Shaw, J. S., Magnani, L., Leake, M. A., Marks, D. W. & Rumstay, K. S., Jan 1 1992, In: ASPC. 28Research output: Contribution to journal › Article › peer-review
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1991
IAPPP: The Next Generation (Abstract)
Oswalt, T. D., Sep 1 1991, In: International Amateur-Professional Photoelectric Photometry Communications. 45Research output: Contribution to journal › Article › peer-review
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The physical properties of double degenerate common proper motion binaries
Sión, E. M., Oswalt, T. D., Liebert, J. W. & Hintzen, P. M. N., Apr 1 1991, In: The Astronomical Journal. 101Research output: Contribution to journal › Article › peer-review
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The Sanyo Rechargeable Flashlight: New Life for an Old Friend
Oswalt, T. D., Dec 1 1991, In: International Amateur-Professional Photoelectric Photometry Communications. 46Research output: Contribution to journal › Article › peer-review
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UBV Photometry of SAO 138613
Smith, J., Smith, B., Oswalt, T. & Strother, E., Dec 1 1991, In: IAPPP. 46Research output: Contribution to journal › Article › peer-review
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UV observations of the cool DBQA5 white dwarf LDS 678A: Limits on the atmospheric composition, pressure shift, and gravitational redshift derived from C I 2479
Oswalt, T. D., Sion, E. M., Hammond, G., Vauclair, G., Liebert, J. W., Wegner, G., Koester, D. & Marcum, P. M., Feb 1991, In: Astronomical Journal. 101, 2, p. 583-586 4 p.Research output: Contribution to journal › Article › peer-review
Open Access -
1990
The CI pressure shift and gravitational redshift of the cool DBQA5 white dwarf LDS678A
Sion, E. M., Vauclair, G., Oswalt, T. D., Hammond, G., Liebert, J., Koester, D., Wegner, G. & Marcum, P., Aug 1 1990, In: ESA, Evolution in Astrophysics: IUE Astronomy in the Era of New Space Missions. 310Research output: Contribution to journal › Article › peer-review
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The Florida Institute of Technology Automatic Photometric Telescopes
Rafert, J. B., Oswalt, T. D., Freel, J., Leko, J. J., Mutchler, M., Proffit, J., Schufelt, S., Smith, J. A., Suárez, J. & Wells, J., Dec 1 1990, In: International Amateur-Professional Photoelectric Photometry Communications. 42Research output: Contribution to journal › Article › peer-review
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The I. A. P. P. P. Enters Its Second Decade: A Paper Presented at the 1990 Boston Meeting of the A. S. P.
Oswalt, T. D., Hall, D. S. & Reisenweber, R. C., Dec 1 1990, In: International Amateur-Professional Photoelectric Photometry Communications. 42Research output: Contribution to journal › Article › peer-review
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1989
REFLEX! A Program to Evaluate the Reaction Times of Visual Occultation Observers
Oswalt, T. D., Jun 1 1989, In: International Amateur-Professional Photoelectric Photometry Communications. 36Research output: Contribution to journal › Article › peer-review
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Three very cool degenerate stars in Luyten common proper motion binaries - Implications for the age of the galactic disk
Hintzen, P., Oswalt, T. D., Liebert, J. & Sion, E. M., Nov 1 1989, In: The Astrophysical Journal. 346Research output: Contribution to journal › Article › peer-review
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1988
Identifications and limited spectroscopy for Luyten common proper motion stars with probable white dwarf components. I - Pair brighter than 17th magnitude
Oswalt, T. D., Hintzen, P. M. & Luyten, W. J., Apr 1 1988, In: Astrophysical Journal Supplement Series. 66Research output: Contribution to journal › Article › peer-review
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L151-81A/B: A Unique White Dwarf Binary with DB and DA Components
Oswalt, T. D., Hintzen, P. M., Liebert, J. W. & Sion, E. M., Oct 15 1988, In: The Astrophysical Journal. 333Research output: Contribution to journal › Article › peer-review
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On the frequency of helium-rich degenerates in wide binaries
Sion, E. M. & Oswalt, T. D., Mar 1 1988, In: The Astrophysical Journal. 326Research output: Contribution to journal › Article › peer-review
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1987
The size, shape, density, and Albedo of Ceres from its occultation of BD+8°471
Millis, R. L., Wasserman, L. H., Franz, O. G., Nye, R. A., Oliver, R. C., Kreidl, T. J., Jones, S. E., Hubbard, W., Lebofsky, L., Goff, R., Marcialis, R., Sykes, M., Frecker, J., Hunten, D., Zellner, B., Reitsema, H., Schneider, G., Dunham, E., Klavetter, J. & Meech, K. & 22 others, , Dec 1 1987, In: Icarus. 72Research output: Contribution to journal › Article › peer-review
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1986
MicroComputer Reduction of Digital Photometric Occultation Data
Oswalt, T. D., Mar 1 1986, In: International Amateur-Professional Photoelectric Photometry Communications. 23Research output: Contribution to journal › Article › peer-review
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1985
A Portable Digital Data Acquisition System for Asteroid Occultation Photometry
Oswalt, T. D. & Rafert, J. B., Jun 1 1985, In: IAPPP. 20Research output: Contribution to journal › Article › peer-review
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1984
MRK 320 : a hot DA white dwarf.
Oswalt, T. D., Peterson, B. M. & Foltz, C. B., Mar 1 1984, In: The Astronomical Journal. 89Research output: Contribution to journal › Article › peer-review