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Hubble Space Telescope Observations of the Host Galaxies of BL Lacertae Objects

  • Authors: C. Megan Urry, Renato Falomo, Riccardo Scarpa, Joseph E. Pesce, Aldo Treves, and Mauro Giavalisco

Urry et al. 1999 The Astrophysical Journal 512 88.

  • Provider: AAS Journals

Caption: Fig. 4.

The χ2 confidence contours for the two parameters of interest (de Vaucouleurs model fits), host galaxy magnitude (﹩m_{\mathrm{gal}\,}﹩), and half‐light radius (﹩r_{e}﹩). Uncertainties in Table 2 were derived from the 68% contours (﹩\Delta \chi ^{2}=2.3﹩), the innermost contour shown; also shown are the 95% (﹩\Delta \chi ^{2}=6﹩) and 99% (﹩\Delta \chi ^{2}=9.2﹩) contours. The best‐fit (minimum χ2) is indicated with an x. The limits of each box indicate the parameter space explored in the fitting procedure.

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