The Binarity of η Carinae Revealed from Photoionization Modeling of the Spectral Variability of the Weigelt Blobs B and D

  title={The Binarity of $\eta$ Carinae Revealed from Photoionization Modeling of the Spectral Variability of the Weigelt Blobs B and D},
  author={Ekaterina M. Verner and Frederick C. Bruhweiler and T R Gull},
  journal={The Astrophysical Journal},
We focus on two Hubble Space Telescope Space Telescope Imaging Spectrograph (HST STIS) spectra of the Weigelt blobs B and D, extending from 1640 to 10400 A, one recorded during the 1998 minimum (1998 March) and the other recorded in 1999 February, early in the following broad maximum. The spatially resolved spectra suggest two distinct ionization regions. One structure is the permanently low-ionization cores of the Weigelt blobs B and D, located several hundred AU from the ionizing source… Expand

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