The Altered State of ηCarinae: HST's Photometric Record 1998--2021
Abstract
Hubble Space Telescope photometry of η Carinae spans 23 years, including five spectroscopic events. The rapid brightening rate decreased after 2010, and the spectroscopic events in 2014 and 2020 had light curves different from their predecessors. Together with other indicators, these developments probably foretell the conclusion of η Car's change of state.
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