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An Intrinsic Baldwin Effect in the H-beta Broad Emission Line in the Spectrum of NGC 5548 | | Karoline M. Gilbert
; Bradley M. Peterson
; | | Date: |
17 Dec 2002 | | Journal: | Astrophys.J. 587 (2003) 123-127 | | Subject: | astro-ph | | Abstract: | We investigate the possibility of an intrinsic Baldwin Effect (i.e.,nonlinear emission-line response to continuum variations) in the broad H-beta emission line of the active galaxy NGC 5548 using cross-correlation techniques to remove light travel-time effects from the data. We find a nonlinear relationship between the H-beta emission line and continuum fluxes that is in good agreement with theoretical predictions. We suggest that similar analysis of multiple lines might provide a useful diagnostic of physical conditions in the broad-line region. | | Source: | arXiv, astro-ph/0212379 | | Services: | Forum | Review | PDF | Favorites | |
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