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The Detailed Light Curve Evolution of V1674 Her (Nova Her 2021)

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arxiv 2107.05763 v1 pith:NVOKFOB7 submitted 2021-07-12 astro-ph.SR

R. M. Quimby , A. W. Shafter , H. Corbett This is my paper · ORCID
classification astro-ph.SR
keywords lightcurvebelowmaximumnovapeakplateaupre-maximum
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abstract

We report high-cadence photometry of the ultra-fast ($t_2\sim1.2$ d) nova V1674 Her during its rise to maximum light ($V\sim6.3$) and the beginning of its subsequent decline. These observations from Evryscope and the Mount Laguna Observatory All-Sky Camera reveal a plateau in the pre-maximum light curve at $g\sim14$ ($\sim$8 mag below peak) that lasted for at least three hours. Similar features (so-called pre-maximum halts) have been observed in some novae near maximum light, but to our knowledge the detection of a plateau in the light curve $\sim$8 mag below peak is unprecedented.

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