Fig. 7 from Distributions of Galaxy Spectral Types in the Sloan Digital Sky Survey

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Distributions of Galaxy Spectral Types in the Sloan Digital Sky Survey

Authors: C. W. Yip, A. J. Connolly, A. S. Szalay, T. Budavári, M. SubbaRao, J. A. Frieman, R. C. Nichol, A. M. Hopkins, D. G. York, S. Okamura, J. Brinkmann, I. Csabai, A. R. Thakar, M. Fukugita, and Ž. Ivezić

Yip et al. 2004 The Astronomical Journal 128 585.

Provider: AAS Journals

Caption: Fig. 7.

Eigencoefficients a₃ vs. a₂ of our sample (≈170,000 galaxy spectra). The introduction of the third eigencoefficient further discriminates galaxies with poststarburst activity (they are the group of galaxies with negative a₃ and a₂ values in this plot). Also, a group of outliers are apparent (a small group of objects with positive a₃ and negative a₂ values), which are explained in the text.

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