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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 331 to 340 of 1780 (0.027 seconds)Spelling suggestions: "subject:"start"" "subject:"stark""
| 331 |
THE CHROMOSPHERES OF M DWARF STARSGiampapa, M. S. (Mark S.) January 1980 (has links)
No description available.
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| 332 |
THE ABSORPTION LINE SPECTRA OF HIGH REDSHIFT QSOSColeman, Gary Dean, 1951- January 1978 (has links)
No description available.
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| 333 |
A gravitational redshift determination of the mean mass of white dwarfs. DA stars.Falcon, Ross Edward 17 December 2010 (has links)
We measure apparent velocities (v_app) of the H alpha and H beta Balmer line cores for 449 non-binary thin disk normal DA white dwarfs (WDs) using optical spectra taken for the European Southern Observatory SN Ia progenitor survey (SPY). Assuming these WDs are nearby and comoving, we correct our velocities to the local standard of rest so that the remaining stellar motions are random. By averaging over the sample, we are left with the mean gravitational redshift, <v_g>: we find <v_g> = <v_app> = 32.57+/-1.17 km/s. Using the mass-radius relation from evolutionary models, this translates to a mean mass of 0.647+0.013-0.014 Msun. We interpret this as the mean mass for all DAs. Our results are in agreement with previous gravitational redshift studies but are significantly higher than all previous spectroscopic determinations except the recent findings of Tremblay & Bergeron. Since the gravitational redshift method is independent of surface gravity from atmosphere models, we investigate the mean mass of DAs with spectroscopic Teff both above and below 12,000 K; fits to line profiles give a rapid increase in the mean mass with decreasing Teff. Our results are consistent with no significant change in mean mass: <M>^hot = 0.640+/-0.014 Msun and <M>^cool = 0.686+0.035-0.039 Msun. / text
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| 334 |
Searching for the existence of unusual nuclear shapes inside neutron starsLi, Chiu-fai., 李朝暉. January 2003 (has links)
published_or_final_version / abstract / toc / Physics / Master / Master of Philosophy
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| 335 |
Anisotropic heat transfer inside rotating neutron starsHui, Chung-yue., 許宗宇. January 2004 (has links)
published_or_final_version / abstract / toc / Physics / Master / Master of Philosophy
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| 336 |
Topics in white dwarf astrophysicsHintzen, Paul Michael Norman, 1950- January 1975 (has links)
No description available.
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| 337 |
STELLAR DISTRIBUTIONS AT HIGH GALACTIC LATITUDESSchreur, Julian Jay, 1939- January 1971 (has links)
No description available.
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| 338 |
THIRTEEN-COLOR PHOTOMETRY OF SUBDWARFSSchuster, William John, 1948- January 1976 (has links)
No description available.
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| 339 |
THE MAGNETIC FIELD STRUCTURE AND EMBEDDED STELLAR POPULATION OF DARK CLOUD COMPLEXESVrba, Frederick John, 1949- January 1976 (has links)
No description available.
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| 340 |
THE NATURE OF HEAVY-ELEMENT ABUNDANCE GRADIENTS IN GALAXIESJensen, Eric Bruce, 1948- January 1977 (has links)
No description available.
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