Deneb Is a Large-amplitude Polarimetric Variable

We write to report the discovery that Deneb is a large-amplitude polarization variable. Over a ∼400 days time span from 2022 August Deneb’s polarization was typically around 3900 parts per million (ppm) in the SDSS ${g}^{{\prime} }$ band. Yet, it varied by several hundred parts per million in an irr...

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Bibliographic Details
Published in:	The Astrophysical Journal Letters
Main Authors:	Daniel V. Cotton, Jeremy Bailey, Jean Perkins, Derek L. Buzasi, Ievgeniia Boiko
Format:	Article
Language:	English
Published:	IOP Publishing 2024-01-01
Subjects:	Polarimetry Alpha Cygni variable stars Starlight polarization
Online Access:	https://doi.org/10.3847/2041-8213/ad4b0f

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