Figure 7 from Reverberation Mapping of the Seyfert 1 Galaxy NGC 7469

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Reverberation Mapping of the Seyfert 1 Galaxy NGC 7469

Authors: B. M. Peterson, C. J. Grier, Keith Horne, R. W. Pogge, M. C. Bentz, G. De Rosa, K. D. Denney Paul Martini, S. G. Sergeev, S. Kaspi, T. Minezaki, Y. Zu, C. S. Kochanek, R. J. Siverd, B. Shappee, C. Araya Salvo, T. G. Beatty, J. C. Bird, D. J. Bord, G. A. Borman, X. Che, C.-T. Chen, S. A. Cohen, M. Dietrich, V. T. Doroshenko, T. Drake, Yu. S. Efimov N. Free, I. Ginsburg, C. B. Henderson, A. L. King, S. Koshida, K. Mogren, M. Molina, A. M. Mosquera, K. Motohara, S. V. Nazarov, D. N. Okhmat, O. Pejcha S. Rafter, J. C. Shields, D. M. Skowron, J. Skowron, M. Valluri, J. L. van Saders, and Y. Yoshii

Peterson et al. 2014 The Astrophysical Journal 795 149.

Provider: AAS Journals

Caption: Figure 7.

Relationship between emission-line width and lag. The top panel shows the relationship between line dispersion in the RMS spectrum and cross-correlation centroid τ_cent. The open circles are lower-confidence measurements of the Hβ and Hα lines from the AGN Watch program in 1996. The red line is the fit to the relationship log σ_line = a + blog τ, which has slope b = −0.45 ± 0.05. The dotted magenta line is the best fit with a forced virial slope of b = −0.5. The bottom panel is exactly the same as the top panel, except that the time lags τ are from JAVELIN. The JAVELIN results for Hα and Hβ from the AGN Watch program are ambiguous and therefore not included. The best-fit slope for these data is b = −0.38 ± 0.06.

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