Optical Continuum and Emission-Line Variability of the Seyfert 1 Galaxy Markarian 509

Details Optical Continuum and Emission-Line Variability of the Seyfert 1 Galaxy Markarian 509 Optical Continuum and Emission-Line Variability of the Seyfert 1 Galaxy Markarian 509

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...471..737c&link_type=abstract

Astrophysical Journal v.471, p.737

Astronomy and Astrophysics

Astronomy

18

Galaxies: Active, Galaxies: Individual Name: Markarian 509, Galaxies: Seyfert

Scientific paper

We report on the results of a 5 year coordinated program of spectroscopic monitoring of the luminous Seyfert 1 galaxy Markarian 509. The Hβ and He II λ4686 emission lines are found to respond to continuum variations with time lags of ~80 and ~60 days, respectively, considerably longer than the emission-line lags measured for other Seyfert galaxies.

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