Fig. 4 from Helium Abundance in the Most Metal‐deficient Blue Compact Galaxies: I Zw 18 and SBS 0335−052

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Helium Abundance in the Most Metal‐deficient Blue Compact Galaxies: I Zw 18 and SBS 0335−052

Authors: Yuri I. Izotov, Frederic H. Chaffee, Craig B. Foltz, Richard F. Green, Natalia G. Guseva, and Trinh X. Thuan

Izotov et al. 1999 The Astrophysical Journal 527 757.

Provider: AAS Journals

Caption: Fig. 4.

Keck II LRIS spectrum of the brightest part of SBS 0335−052 within a ﹩0\farcs 8\times 1\farcs 0﹩ aperture. The strongest nebular emission lines are marked. Note the presence of the broad W‐R bump at rest wavelength 4620–4640 Å. The redshift of SBS 0335−052 is ﹩z=0.0136﹩.

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