Optical Continuum and Emission‐Line Variability of Seyfert 1 Galaxies | Zendy

B. M. Peterson | Zendy; I. Wanders | Zendy; R. Bertram | Zendy; James F. Hunley | Zendy; Richard W. Pogge | Zendy; R. M. Wagner | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Optical Continuum and Emission‐Line Variability of Seyfert 1 Galaxies

Author(s) -

B. M. Peterson,

I. Wanders,

R. Bertram,

James F. Hunley,

Richard W. Pogge,

R. M. Wagner

Publication year - 1998

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/305813

Subject(s) - galaxy , physics , virial theorem , virial mass , astrophysics , active galactic nucleus , emission spectrum , line (geometry) , astronomy , spectral line , geometry , mathematics

We present the light curves obtained during an eight-year program of opticalspectroscopic monitoring of nine Seyfert 1 galaxies: 3C 120, Akn 120, Mrk 79,Mrk 110, Mrk 335, Mrk 509, Mrk 590, Mrk 704, and Mrk 817. All objects showsignificant variability in both the continuum and emission-line fluxes. We usecross-correlation analysis to derive the sizes of the broad Hbeta-emittingregions based on emission-line time delays, or lags. We successfully measuretime delays for eight of the nine sources, and find values ranging from abouttwo weeks to a little over two months. Combining the measured lags and widthsof the variable parts of the emission lines allows us to make virial massestimates for the active nucleus in each galaxy. The virial masses are in therange 10^{7-8} solar masses.Comment: 24 pages, 16 figures. Accepted for publication in Ap

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research