Figure 1 from The Membership and Distance of the Open Cluster Collinder 419

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The Membership and Distance of the Open Cluster Collinder 419

Authors: Lewis C. Roberts Jr., Douglas R. Gies, J. Robert Parks, Erika D. Grundstrom, M. Virginia McSwain, David H. Berger, Brian D. Mason, Theo A. ten Brummelaar, and Nils H. Turner

ROBERTS et al. 2010 The Astronomical Journal 140 744.

Provider: AAS Journals

Caption: Figure 1.

Our estimate for the spectral type of HD 193322 B is B1.5 V based on comparisons to stars in Valdes et al. (2004). Walborn & Fitzpatrick (1990) advocate using the Si lines to classify early B stars, and those lines were given the strongest weight. The spectra were normalized and then offset to improve clarity.

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