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257 results on '"Shipman, Harry L."'

2. First Ultraviolet Spectrum of a Brown Dwarf: Evidence for H_2 Fluorescence and Accretion

Author

Gizis, John E., Shipman, Harry L., and Harvin, James A.

Subjects
Astrophysics
Abstract

We analyze an HST/STIS ultraviolet spectrum of the young brown dwarf 2MASSW J1207334-393254, a member of the ten million-year old TW Hya Association that has a planetary-mass companion. We detect and identify numerous emission lines. CIV and other ions are seen that arise in hot gas. We identify a series of lines with Lyman-pumped H_2 molecular lines, indicating that cool gas is also present. Overall, this substellar object shows many of the same characteristics as classical T Tauri stars. We interpret our results as direct evidence of accretion from a circumstellar gas disk, consistent with previous claims. The lack of SiIV emission from the accreting gas indicates that silicon has been depleted into grains., Comment: 8 pages, to appear in Astrophysical Journal Letters

Published
2005
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6. Evidence and Warrants for Belief in a College Astronomy Course.

Author

Brickhouse, Nancy W., Dagher, Zoubeida R., and Shipman, Harry L.

Abstract

Describes a study providing evidence of how students' talk and writing about the nature of science differs depending on the particular scientific topic under discussion. Describes the relationship between theory and evidence, warrants for belief, and nature of observation. (Contains 25 references.) (Author/YDS)

Published
2002

7. Changes in Student Views of Religion and Science in a College Astronomy Course.

Author

Shipman, Harry L., Brickhouse, Nancy W., and Dagher, Zoubeida

Abstract

A cautious introduction of the dialogue between science and religion into a college astronomy course provoked diverse reactions from the 340 students in the course. Reports that approximately half of the students in the class engaged with the issue of science and religion to some extent and that there were few negative reactions to this intervention. (Author/MM)

Published
2002

10. Thomas Kuhn's Influence on Astronomers.

Author

Shipman, Harry L.

Abstract

Surveys the astronomical community on their familiarity with the work of Thomas Kuhn. Finds that for some astronomers, Kuhn's thought resonated well with their picture of how science is done and provided perspectives on their scientific careers. (Author/CCM)

Published
2000

11. The HST white dwarf project: V 471 Tauri and Procyon B

Author

Shipman, Harry L., Araki, H., editor, Brézin, E., editor, Ehlers, J., editor, Frisch, U., editor, Hepp, K., editor, Jaffe, R. L., editor, Kippenhahn, R., editor, Weidenmüller, H. A., editor, Wess, J., editor, Zittartz, J., editor, Beiglböck, W., editor, Koester, Detlev, editor, and Werner, Klaus, editor

Published
1995
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13. Hubble Space Telescope Observations of White Dwarf Stars

Author

Shipman, Harry L., Barnhill, Maurice, Bond, Howard, Bruhweiler, Fred, Finley, David, Fontaine, Gilles, Holberg, Jay, Koester, Detlev, Liebert, Jim, Oswalt, Terry, Nousek, John, Roby, Scott, Sion, Ed, Tweedy, Richard, Wesemael, Francois, and Barstow, Martin A., editor

Published
1993
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15. The DBAQ G35–26

Author

Thejll, Peter, MacDonald, James, Shipman, Harry L., Vauclair, Gérard, editor, and Sion, Edward, editor

Published
1991
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