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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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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 441 to 450 of 1780 (0.052 seconds)Spelling suggestions: "subject:"A start."" "subject:"A stark.""
| 441 |
Q-nucleosynthesis : implications for stellar evolution /Joseph, Craig L. January 1985 (has links)
No description available.
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| 442 |
A spectral analysis of RV Tauri variables /Wahlgren, Glenn Michael January 1986 (has links)
No description available.
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| 443 |
Theoretical atmospheres of stars in the broad line regions of active galaxies /Scott, John F. January 1987 (has links)
No description available.
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| 444 |
A spectroscopic and photometric investigation of the stellar association Cepheus OB2 /Simonson, S. C. January 1967 (has links)
No description available.
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| 445 |
Observed and predicted intensities of absorption lines in Mira variables /Morris, Synnöve Voss January 1970 (has links)
No description available.
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| 446 |
Near infrared photoelectric photometry of M type supergiants /White, Nathaniel Miller January 1971 (has links)
No description available.
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| 447 |
A photometric study of stars with composite spectra /Young, Warren Melvin January 1971 (has links)
No description available.
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| 448 |
Near infrared photometry and absolute magnitudes of carbon stars.Baumert, John Henry January 1972 (has links)
No description available.
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| 449 |
The characteristics of the red spectra of the late-type supergiants /Imhoff, Catherine Louise January 1976 (has links)
No description available.
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| 450 |
A Combined Multiwavelength VLA/ALMA/Chandra Study Unveils the Complex Magnetosphere of the B-Type Star HR5907Leto, P., Trigilio, Courtney, Oskinova, Lidia M., Ignace, Richard, Buemi, C. S., Umana, G., Ingallinera, A., Leone, F., Phillips, N. M., Agliozzo, C., Todt, H., Cerrigone, L. 01 May 2018 (has links)
We present new radio/millimeter measurements of the hot magnetic star HR 5907 obtained with the VLA and ALMA interferometers. We find that HR 5907 is the most radio luminous early type star in the cm–mm band among those presently known. Its multi-wavelength radio light curves are strongly variable with an amplitude that increases with radio frequency. The radio emission can be explained by the populations of the non-thermal electrons accelerated in the current sheets on the outer border of the magnetosphere of this fast-rotating magnetic star. We classify HR 5907 as another member of the growing class of strongly magnetic fast-rotating hot stars where the gyro-synchrotron emission mechanism efficiently operates in their magnetospheres. The new radio observations of HR 5907 are combined with archival X-ray data to study the physical condition of its magnetosphere. The X-ray spectra of HR 5907 show tentative evidence for the presence of non-thermal spectral component. We suggest that non-thermal X-rays originate a stellar X-ray aurora due to streams of non-thermal electrons impacting on the stellar surface. Taking advantage of the relation between the spectral indices of the X-ray power-law spectrum and the non-thermal electron energy distributions, we perform 3-D modelling of the radio emission for HR 5907. The wavelength-dependent radio light curves probe magnetospheric layers at different heights above the stellar surface. A detailed comparison between simulated and observed radio light curves leads us to conclude that the stellar magnetic field of HR 5907 is likely non-dipolar, providing further indirect evidence of the complex magnetic field topology of HR 5907.
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