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The Close Agn Reference Survey (Cars): Mrk 1018 Returns To The Shadows After 30 Years As A Seyfert 1, R. E. Mcelroy, Bernd Husemann, S. M. Croom, T. A. Davis, Vardha N. Bennert, G. Busch, F. Combes, A. Eckart, M. Perez-Torres, M. Powell, J. Scharwächter, G. R. Tremblay, T. Urrutia
The Close Agn Reference Survey (Cars): Mrk 1018 Returns To The Shadows After 30 Years As A Seyfert 1, R. E. Mcelroy, Bernd Husemann, S. M. Croom, T. A. Davis, Vardha N. Bennert, G. Busch, F. Combes, A. Eckart, M. Perez-Torres, M. Powell, J. Scharwächter, G. R. Tremblay, T. Urrutia
Physics
We report the discovery that the known “changing look” AGN Mrk 1018 has changed spectral type for a second time. New VLT-MUSE data taken in 2015 as part of the Close AGN Reference Survey (CARS) shows that the AGN has returned to its original Seyfert 1.9 classification. The CARS sample is selected to contain only bright type 1 AGN, but Mrk 1018’s broad emission lines and continuum, typical of type 1 AGN, have almost entirely disappeared. We use spectral fitting of the MUSE spectrum and previously available spectra to determine the drop in broad line flux and the Balmer decrement. …