SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. I. ULTRAVIOLET OBSERVATIONS OF THE SEYFERT 1 GALAXY NGC 5548 WITH THE COSMIC ORIGINS SPECTROGRAPH ON HUBBLE SPACE TELESCOPE

@article{Rosa2015SPACETA,
  title={SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. I. ULTRAVIOLET OBSERVATIONS OF THE SEYFERT 1 GALAXY NGC 5548 WITH THE COSMIC ORIGINS SPECTROGRAPH ON HUBBLE SPACE TELESCOPE},
  author={Gisella de Rosa and Bradley M. Peterson and Justin Ely and Gerard A. Kriss and D. Michael Crenshaw and Keith Horne and K. T. Korista and Hagai Netzer and Richard W. Pogge and Patricia Ar{\'e}valo and Aaron J. Barth and Misty C. Bentz and William N. Brandt and A. A. Breeveld and Brendon J. Brewer and Elena Dalla Bont{\`a} and Adriana de Lorenzo-C{\'a}ceres and Kelly D. Denney and Matthias Dietrich and Richard Allen Edelson and P. A. Evans and Michael M. Fausnaugh and Neil A. Gehrels and Jonathan Mark Gelbord and M. R. Goad and Catherine J. Grier and Dirk Grupe and Patrick B. Hall and Jelle S. Kaastra and Brandon C. Kelly and Jamie A. Kennea and Christopher S. Kochanek and P Lira and Smita Mathur and Ian M. McHardy and J A Nousek and Anna Pancoast and I. E. Papadakis and Liuyi Pei and Jaderson da Silva Schimoia and Michael H. Siegel and David Starkey and Tommaso Treu and Phil Uttley and Simon Vaughan and Marianne Vestergaard and Carolin Villforth and H. Yan and S. Young and Ying Zu},
  journal={The Astrophysical Journal},
  year={2015},
  volume={806},
  pages={128-128}
}
We describe the first results from a six-month long reverberation-mapping experiment in the ultraviolet based on 171 observations of the Seyfert 1 galaxy NGC 5548 with the Cosmic Origins Spectrograph on the Hubble Space Telescope. Significant correlated variability is found in the continuum and broad emission lines, with amplitudes ranging from ∼30% to a factor of two in the emission lines and a factor of three in the continuum. The variations of all the strong emission lines lag behind those… 

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