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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2507.13151 |
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Table of Contents:
- We report medium-resolution $0.85-2.45\,μ$m spectroscopy obtained in 2015 and 2022 and high resolution $2.27-2.39\,μ$m and $4.59-4.77\,μ$m spectroscopy obtained in 2015 of V838 Monocerotis, along with modeling of the $0.85-2.45\,μ$ spectrum. V838 Mon underwent a series of eruptions and extreme brightenings in 2002, which are thought to have occured as a result of a stellar merger. The new spectra and modelling of them reveal a disturbed red giant photosphere that is probably continuing to contract and ejecta that are cooling and continuing to disperse at velocities up to 200kms$^{-1}$.