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arXiv · 2411.19348

Long term UBV RI photometric and spectral monitoring of nova KT Eri during 2009-2023

S. Yu. Shugarov·P. Yu. Golysheva·S. Dallaporta·U. Munari
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Abstract

We present a status report of our intensive and long-term UBV RI photometric monitoring of nova KT Eri since its outbust in 2009. The old-nova in quiescence is characterized by very high excitation conditions (HeII 4686 being constantly the strongest emission line in optical spectra) and a complex-pattern photometric variability of one mag amplitude in which multi-periodicities (from hours to years) are mixed with chaotic activity of similar amplitude. Mean color and brightness levels are the same for pre- and post- outburst quiescence.

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S. Yu. Shugarov, P. Yu. Golysheva, S. Dallaporta, U. Munari. 2024-11-28. Long term UBV RI photometric and spectral monitoring of nova KT Eri during 2009-2023. https://arxiv.org/abs/2411.19348

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