J. R. Valdés

Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XVI. A 13 Year Study of Spectral Variability in NGC 5548

B. M. Peterson, R. Bertram, K. Bischoff et al. · The Astrophysical Journal · 2002 · 206 citations · Full text

Natural Sciences, Astronomy, Physics +13

Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using Its General Relativity Centenary Flare: Improved Orbital Parameters

Lankeswar Dey, M. J. Valtonen, A. Gopakumar et al. · The Astrophysical Journal · 2018 · 121 citations · Full text

Natural Sciences, Astronomy, Physics +15

<i>Spitzer</i> IRS spectra of Virgo Early-Type Galaxies: Detection of Stellar Silicate Emission

A. Bressan, P. Panuzzo, L. M. Buson et al. · The Astrophysical Journal · 2006 · 110 citations · Full text

Natural Sciences, Astronomy, Physics +14

SPECTRAL OPTICAL MONITORING OF THE NARROW-LINE SEYFERT 1 GALAXY Ark 564

A. I. Shapovalova, Luka Č. Popović, A. N. Burenkov et al. · The Astrophysical Journal Supplement Series · 2012 · 98 citations · Full text

Natural Sciences, Astronomy, Physics +13

EVIDENCE FOR PERIODICITY IN 43 YEAR-LONG MONITORING OF NGC 5548

E. Bon, S. Zucker, H. Netzer et al. · The Astrophysical Journal Supplement Series · 2016 · 83 citations · Full text

Natural Sciences, Astronomy, Physics +13