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V1507 CYGNI (HD187399): A Highly Evolved, Enigmatic Interacting Binary System with an Eccentric Orbit

  • Authors: T. J. Davidge

T. J. Davidge 2023 The Astronomical Journal 166 .

  • Provider: AAS Journals

Caption: Figure 1.

Spectrum of V1507 Cyg that was recorded on 2022 May 10. The Si II and He I lines originate mainly in the spectrum of the brighter star, while the Hα emission originates in circumstellar and intrasystem material. The weak emission lines are cosmic rays that were not suppressed during processing. The slight shift in wavelength between the expected and observed locations of the Si II and He I lines is due to the orbital motion of the brighter star.

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