Roger Leon Ptak
Affiliations: | 1968-1998 | Astronomy | Bowling Green State University, Bowling Green, OH, United States |
Area:
quasarsWebsite:
http://www.toledoblade.com/Deaths/2014/09/22/Roger-Ptak-1938-2014-Physics-professor-at-BGSU-led-astronomy-department.htmlGoogle:
"Roger Leon Ptak"Bio:
(1938 - 2014)
https://aas.org/obituaries/roger-l-ptak-1938-2014
https://books.google.com/books?id=CUxZAAAAYAAJ
https://books.google.com/books?id=pUhZAAAAYAAJ
Parents
Sign in to add mentor| Edwin E. Salpeter | grad student | 1964 | Cornell (Physics Tree) | |
| (M.S. Thesis: Back-scattering of a plane wave incident upon a medium at an angle greater than critical.) | ||||
| Philip Morrison | grad student | 1966 | Cornell (Physics Tree) | |
| (Ph. D. Thesis: Optical emission from a charged particle slowing down in a plasma.) | ||||
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Publications
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| Wanders I, Peterson BM, Alloin D, et al. (1997) Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. XI. Intensive monitoring of the ultraviolet spectrum of NGC 7469 Astrophysical Journal, Supplement Series. 113: 69-88 |
| Rodríguez-Pascual PM, Alloin D, Clavel J, et al. (1997) Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. IX. Ultraviolet observations of fairall Astrophysical Journal, Supplement Series. 110: 9-20 |
| Reichert GA, Rodriguez-Pascual PM, Alloin D, et al. (1994) Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. 5: Variability of the ultraviolet continuum and emission lines of NGC 3783 The Astrophysical Journal. 425: 582 |
| Clavel J, Reichert GA, Alloin D, et al. (1991) Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. I. An 8 month campaign of monitoring NGC 5548 with IUE Astrophysical Journal. 366: 64-81 |
| Stoner RE, Ptak R, Ellis D. (1974) The interpretation of broad emission lines in high-redshift QSOS The Astrophysical Journal. 191: 291 |
| Ptak RL, Stoner RE. (1973) The Broad Component of Hα in the Seyfert Galaxy NGC 5548 The Astrophysical Journal. 179 |
| Ptak R, Stoner RE. (1973) A Radially Streaming Proton Model for the Broad Component of Hydrogen Emission in Seyfert Galaxies The Astrophysical Journal. 185: 121-136 |
| Ellis D, Ptak R, Stoner R. (1973) Balmer-line emission from auroral protons The Astrophysical Journal. 182: 637-648 |
| Ptak R, Stoner R. (1973) Origin of Broad Emission Lines from Quasistellar Objects Nature. 243: 280-280 |
| Ptak R. (1970) Balmer Emission Lines In Seyfert Galaxies. The Astrophysical Journal. 162: 425 |