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Second Timescale Photometry of the Very Fast Nova V1674 Her with Palomar Gattini-IR

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arxiv 2110.13253 v1 pith:EKIVS7U5 submitted 2021-10-25 astro-ph.HE

Second Timescale Photometry of the Very Fast Nova V1674 Her with Palomar Gattini-IR

Kylie Y. Hansen , Kishalay De , Michael C. B. Ashley , Mansi M. Kasliwal , Alexander Delacroix , Tim Greffe , David Hale , Matthew J. Hankins
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Ryan Lau Chengkui Li Daniel McKenna Anna M. Moore Eran O. Ofek Roger M. Smith Jamie Soon Roberto Soria Gokul P. Srinivasaragavan Tony Travouillon
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keywords novafastfirstgattini-irinfraredpalomarperiodicphotometry
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We report second-timescale infrared photometry of the nova V1674 Her using Palomar Gattini-IR. These observations constitute the first infrared and highest temporal resolution data (resolution of ~ 0.84 s) of the nova reported to date. PGIR observed in this fast readout mode for more than an hour on three nights between 3 and 6 days after discovery. We searched for periodic variability using a Lomb-Scargle periodogram and did not detect anything down to a three sigma upper limit of 0.093 mag. This suggests that the periodic variability detected in the nova by Patterson et al. 2021 was lower by at least a factor of about 1.65 in the first week of the eruption.

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