Figure 11 from Molecular Clouds in the North American and Pelican Nebulae: Structures

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Molecular Clouds in the North American and Pelican Nebulae: Structures

Authors: Shaobo Zhang, Ye Xu, and Ji Yang

Zhang, Xu, & Yang 2014 The Astronomical Journal 147 46.

Provider: AAS Journals

Caption: Figure 11.

Surface density of H ₂ traced by ¹²CO, ¹³CO, and C ¹⁸O with the same dynamical range. The abundances N(H ₂)/ N( ¹³CO) = 7 × 10 ⁵ (Nagahama et al. 1998) and N(H ₂)/ N(C ¹⁸O) = 7 × 10 ⁶ (Castets & Langer 1995) are adopted in the surface density calculation.

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