S. Collier

X‐Ray and Optical Variability in NGC 4051 and the Nature of Narrow‐Line Seyfert 1 Galaxies

B. M. Peterson, I. M. McHardy, B. J. Wilkes et al. · The Astrophysical Journal · 2000 · 223 citations · Full text

Natural Sciences, Astronomy, Physics +13

Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XIV. Intensive Optical Spectrophotometric Observations of NGC 7469

S. Collier, K. Horne, S. Kaspi et al. · The Astrophysical Journal · 1998 · 206 citations · Full text

Natural Sciences, Astronomy, Physics +14

Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XI. Intensive Monitoring of the Ultraviolet Spectrum of NGC 7469

I. Wanders, B. M. Peterson, D. Alloin et al. · The Astrophysical Journal Supplement Series · 1997 · 175 citations · Full text

Natural Sciences, Astronomy, Physics +13

A new direct method for measuring the Hubble constant from reverberating accretion discs in active galaxies

S. Collier, K. Horne, I. Wanders et al. · Monthly Notices of the Royal Astronomical Society · 1999 · 121 citations · Full text

Natural Sciences, Astronomy, Physics +13

Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XII. Ground‐based Monitoring of 3C 390.3

M. Dietrich, B. M. Peterson, P. Albrecht et al. · The Astrophysical Journal Supplement Series · 1998 · 116 citations · Full text

Natural Sciences, Astronomy, Physics +13