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Multiwavelength monitoring of the narrow-line Seyfert 1 galaxy Arakelian 564. III. Optical observations and the optical-UV-X-ray connection
This article presents the results of a 2 year long optical monitoring program of the narrow-line Seyfert 1 galaxy Ark 564.
Date:
July 3, 2001
Creator:
Shemmer, Ohad; Romano, P.; Bertram, Ray; Brinkman, Jon; Collier, S.; Crowley, K.A. et al.
System:
The UNT Digital Library
Multiwavelength monitoring of the narrow-line Seyfert 1 galaxy Arakelian 564. II. Ultraviolet continuum and emission-line variability
This article presents the results of an intensive 2 month campaign of approximately daily spectrophotometric monitoring of the narrow-line Seyfert 1 galaxy Ark 564 with the Hubble Space Telescope.
Date:
July 3, 2001
Creator:
Collier, S.; Crenshaw, D.M.; Peterson, Bradley M.; Brandt, William Nielsen; Clavel, J.; Edelson, R. et al.
System:
The UNT Digital Library