Figure 4 from Project 1640 Observations of Brown Dwarf GJ 758 B: Near-infrared Spectrum and Atmospheric Modeling

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Project 1640 Observations of Brown Dwarf GJ 758 B: Near-infrared Spectrum and Atmospheric Modeling

Authors: R. Nilsson, A. Veicht, P. A. Giorla Godfrey, E. L. Rice, J. Aguilar, L. Pueyo, L. C. Roberts, R. Oppenheimer, D. Brenner, S. H. Luszcz-Cook, E. Bacchus, C. Beichman, R. Burruss, E. Cady, R. Dekany, R. Fergus, L. Hillenbrand, S. Hinkley, D. King, T. Lockhart, I. R. Parry, A. Sivaramakrishnan, R. Soummer, G. Vasisht, C. Zhai, and N. T. Zimmerman

2017 The Astrophysical Journal 838 64.

Provider: AAS Journals

Caption: Figure 4.

Left: plot of the mean noise over all wavelength channels for the S4 spectral extraction of GJ 758 B in 2013-07, over the full range of principal components examined. An overall minimum is generally reached for N_PC ≈ 100–250. Right: extracted companion spectra from the 2013-07 epoch for the full ﹩{N}_{\mathrm{PC}}=\{10,20,30,\ldots ,400\}﹩ sample in each wavelength channel plotted in red, with the selected optimized (N_PC = {160, 170, 180, 190, 200, 225}) sub-sample plotted in green.

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