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3C 273 - half a century later

We have presented an optical monitoring of 3C 273, the first quasar discovered fifty years ago. It does not show variability both on intra-night and long-term time scales. To facilitate the further monitoring of 3C 273, we compiled the available calibrations of the comparison stars in its field into a mean sequence.

preprint2013arXivOpen access
L. Slavcheva-MihovaB. MihovI. Iliev
astro-ph.HE
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L. Slavcheva-MihovaB. MihovI. Iliev

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