机译:Ringed spiral galaxy NGC4622. II. An independent determination that the two outer arms lead
Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA;
Bevill State Community Coll, Jasper, AL 35555 USA;
USN Observ, Washington, DC 20392 USA;
galaxies individual (NGC4622); galaxies : spiral; galaxies : structure; COROTATION RADII; NGC 4622; DENSITY;