Quadruple-peaked spectral line profiles as a tool to constrain gravitational potential of shell galaxies
Quadruple-peaked spectral line profiles as a tool to constrain gravitational potential of shell galaxies
Stellar shells observed in many giant elliptical and lenticular as well as a few spiral and dwarf galaxies, presumably result from galaxy mergers. Line-of-sight velocity distributions of the shells could, in principle, if measured with a sufficiently high S/N, constitute one of methods to constrain the gravitational potential of the …