Soifer, B. T. and Neugebauer, G. and Oke, J. B. and Matthews, K. (1980) Low resolution infrared spectra of quasars. In: Objects of High Redshift. IAU Symposia. No.92. D. Reidel , Dordrecht, pp. 279-282. ISBN 978-90-277-1118-2. http://resolver.caltech.edu/CaltechAUTHORS:20170308-104936898
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Abstract
Low resolution spectra of a significant sample of quasars show that the Paschen α and Balmer line ratios do not agree with the radiative recombination case B result and vary widely within the quasars sampled. The range in Pα:Hβ ratios is a factor of ~6, while the range in Lyα:Hα ratios is a factor of ~5. For the Pα:Balmer series, the deviations from case B recombination are not consistent with reddening, but appear, within large dispersions, to be consistent with optical depth effects in the Balmer lines affecting the line ratios. The Lyα:Hα ratio is, however, correlated with the continuum spectral index, and can be explained as due to reddening affecting both the lines and continuum.
| Item Type: | Book Section | ||||||
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| Additional Information: | © 1980 by the IAU. This work was supported by NSF grant AST77-20516 and NASA grant NGL 05-002-207. | ||||||
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| Record Number: | CaltechAUTHORS:20170308-104936898 | ||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20170308-104936898 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 74892 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Tony Diaz | ||||||
| Deposited On: | 08 Mar 2017 19:09 | ||||||
| Last Modified: | 08 Mar 2017 19:09 |
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