H-alpha Images of Ultra-Flat Edge-On Spiral Galaxies

S. S. Kaisin, I. D. Karachentsev, H. Hernandez-Toledo +2

We present the H$\alpha$ images of ultra-flat (UF) spiral galaxies seen practically edge-on. The galaxies have the angular diameter in the $B$ band $a>1.9^{\prime }$ and the apparent ax…