The Cepheid Distance to the Seyfert 1 Galaxy NGC 4151.

Authors :: Yuan, W.
Fausnaugh, M. M.
Hoffmann, S. L.
Macri, L. M.
Peterson, B. M.
Riess, A. G.
Bentz, M. C.
Brown, J. S.
Bontŕ, E. Dalla
Davies, R. I.
De Rosa, G.
Ferrarese, L.
Grier, C. J.
Hicks, E. K. S.
Onken, C. A.
Pogge, R. W.
Storchi-Bergmann, T.
Vestergaard, M.
Source :: Astrophysical Journal; 10/10/2020, Vol. 902 Issue 1, p1-15, 15p
Publication Year :: 2020
Abstract: We derive a distance of 15.8 ± 0.4 Mpc to the archetypal Seyfert 1 galaxy NGC 4151 based on the near-infrared Cepheid period–luminosity relation and new Hubble Space Telescope multiband imaging. This distance determination, based on measurements of 35 long-period (P > 25 days) Cepheids, will support the absolute calibration of the supermassive black hole mass in this system, as well as studies of the dynamics of the feedback or feeding of its active galactic nucleus. [ABSTRACT FROM AUTHOR]