Results of a long-term optical variability study of 11 quasars and VRI photometry of comparison stars

We present the results of a 15-yr long-term optical monitoring of 11 quasars conducted with the 2-m Ritchey–Chretien–Coude and the 50/70 cm Schmidt telescopes at the Rozhen National Astronomical Observatory, Bulgaria. Our observations are performed with standard Johnson-Cousins $VRI$ band filters an...

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Veröffentlicht in:	Monthly notices of the Royal Astronomical Society 2024-06, Vol.531 (4), p.4746-4761
Hauptverfasser:	Minev, Milen, Trifonov, Trifon, Ivanov, Valentin D, Ovcharov, Evgeni, Bozhilov, Vladimir, Valcheva, Antoniya, Kostov, Andon, Nedialkov, Petko
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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