- Fausnaugh, MM;
- Starkey, DA;
- Horne, Keith;
- Kochanek, CS;
- Peterson, BM;
- Bentz, MC;
- Denney, KD;
- Grier, CJ;
- Grupe, D;
- Pogge, RW;
- De Rosa, G;
- Adams, SM;
- Barth, AJ;
- Beatty, Thomas G;
- Bhattacharjee, A;
- Borman, GA;
- Boroson, TA;
- Bottorff, MC;
- Brown, Jacob E;
- Brown, Jonathan S;
- Brotherton, MS;
- Coker, CT;
- Crawford, SM;
- Croxall, KV;
- Eftekharzadeh, Sarah;
- Eracleous, Michael;
- Joner, MD;
- Henderson, CB;
- Holoien, TW-S;
- Hutchison, T;
- Kaspi, Shai;
- Kim, S;
- King, Anthea L;
- Li, Miao;
- Lochhaas, Cassandra;
- Ma, Zhiyuan;
- MacInnis, F;
- Manne-Nicholas, ER;
- Mason, M;
- Montuori, Carmen;
- Mosquera, Ana;
- Mudd, Dale;
- Musso, R;
- Nazarov, SV;
- Nguyen, ML;
- Okhmat, DN;
- Onken, Christopher A;
- Ou-Yang, B;
- Pancoast, A;
- Pei, L;
- Penny, Matthew T;
- Poleski, Radosław;
- Rafter, Stephen;
- Romero-Colmenero, E;
- Runnoe, Jessie;
- Sand, David J;
- Schimoia, Jaderson S;
- Sergeev, SG;
- Shappee, BJ;
- Simonian, Gregory V;
- Somers, Garrett;
- Spencer, M;
- Stevens, Daniel J;
- Tayar, Jamie;
- Treu, T;
- Valenti, Stefano;
- Van Saders, J;
- Villanueva, S;
- Villforth, C;
- Weiss, Yaniv;
- Winkler, H;
- Zhu, W
We present optical continuum lags for two Seyfert 1 galaxies, MCG+08-11-011 and NGC 2617, using monitoring data from a reverberation mapping campaign carried out in 2014. Our light curves span the ugriz filters over four months, with median cadences of 1.0 and 0.6 days for MCG+08-11-011 and NGC 2617, respectively, combined with roughly daily X-ray and near-UV data from Swift for NGC 2617. We find lags consistent with geometrically thin accretion-disk models that predict a lag-wavelength relation of τ ∝ λ 4/3. However, the observed lags are larger than predictions based on standard thin-disk theory by factors of 3.3 for MCG+08-11-011 and 2.3 for NGC 2617. These differences can be explained if the mass accretion rates are larger than inferred from the optical luminosity by a factor of 4.3 in MCG+08-11-011 and a factor of 1.3 in NGC 2617, although uncertainty in the SMBH masses determines the significance of this result. While the X-ray variability in NGC 2617 precedes the UV/optical variability, the long (2.6 day) lag is problematic for coronal reprocessing models.