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arXiv · 2109.08012

The Altered State of $η$Carinae: HST's Photometric Record 1998--2021

John C. Martin·Kris Davidson·Roberta M. Humphreys·Kazunori Ishibashi
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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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John C. Martin, Kris Davidson, Roberta M. Humphreys, Kazunori Ishibashi. 2021-09-16. The Altered State of $η$Carinae: HST's Photometric Record 1998--2021. https://doi.org/10.3847/2515-5172%2Fac1fff

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