Search

Image Details

View Article Bookmark & Share

Choose export citation format:

Export Citation
Large resolution
Hi-Resolution Export to PDF

NGC 3227 Blinks: An Extreme Changing-look Event in a Seyfert Galaxy

  • Authors: Kaiwen Zhang, Michael S. Brotherton, Pu Du, Dong-Wei Bao, Bi-Xuan Zhao, Feng-na Fang, Yan-Rong Li, Chen Hu, Ming Xiao, Keith Horne, Gerard A. Kriss, Daniel Proga, Jian-Min Wang

Kaiwen Zhang et al 2026 The Astrophysical Journal Letters 1011 .

  • Provider: AAS Journals

Caption: Figure 1.

Mean and rms spectra from the WIRO monitoring campaign of NGC 3227. Left: mean spectrum. Right: rms spectrum. The gray region marks the local continuum window used for Hβ pseudocontinuum subtraction, the orange region marks the Hβ measurement window (4800–4929 Å), and the cyan region marks the [O III] λλ4959, 5007 doublet (4929–5040 Å). The minimal [O III] variability in the rms spectrum confirms the stability of the flux calibration.

Other Images in This Article
Image in this article
Image in this article
Image in this article
Image in this article
Image in this article
Copyright and Terms & Conditions

Additional terms of reuse