CAOSP abstracts, Volume: 55, No.: 3, year: 2025

Author(s): Shugarov, S.Yu.; Golysheva, P.Yu.; Dallaporta, S.; Munari, U.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 55, no. 3, p. 108-111.
Date: 04/2025
Title: Long term UBVRI photometric and spectral monitoring of nova KT Eri during 2009-2023
Keyword(s): nova, spectrum, outburst, color variations
Pages: 108 -- 111
DOI: https://doi.org/10.31577/caosp.2025.55.3.108
NASA ADS Abstract Service: 2025CoSka..55c.108S
Citation:
License: This work is licensed under a Creative Commons Attribution 4.0 International License

Abstract: We present a status report of our intensive and long-term UBVRI photometric monitoring of nova KT Eri since its outburst 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.