Polar Disk Galaxies as New Way to Study Galaxy Formation: the Case of NGC4650A

  title={Polar Disk Galaxies as New Way to Study Galaxy Formation: the Case of NGC4650A},
  author={Enrichetta Iodice},
NGC4650A is a polar disk galaxy: this is a peculiar object composed by a central spheroidal component, the host galaxy (HG), and an extended disk made up by gas, stars and dust, which orbits nearly perpendicular to the plane of the central galaxy. The existence of two decoupled components of the angular momentum makes this object an ideal laboratory i) to study gravitational interactions and merging and ii) to constrain the 3D shape of its dark matter halo. In view of these applications, I will… 

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Pèrez, a nd C
  • Kehrig,A&A 497,
  • 2009
Oosterloo, an d G. JÃşzsa
  • ASPC 396,
  • 2008