Galaxy Zoo: Passive Red Spirals (2009)
Masters, Karen L., Mosleh, Moein, Romer, A. Kathy, Nichol, Robert C., Bamford, Steven P., Schawinski, Kevin, ...
We study the spectroscopic properties and environments of red spiral galaxies found by the Galaxy Zoo project. By carefully selecting face-on, disk dominated spirals we construct a sample of truly...