Abstract
Lenticular galaxies display the prominent disks that are characteristic
of late-type galaxies, but contain no gas, dust or star formation like
early-type systems. So are they more closely related to spiral or
ellipticals?.
One important clue to their origin is recorded in the kinematics. If
they are simply quenched spiral galaxies then their stellar motions
should be identical to those in spirals, whereas if their origins are
closer to an elliptical, produced through merging, then this history
should be reflected in more random stellar motions ([1]).
We performed a maximum likelihood analysis in order to recover rotation
velocity and random motions in the spheroidal and disk component of the
galaxy NGC 1023. Its kinematics are consistent with the one of a
stripped spiral, somehow complicated by an ongoing minor merger.
Original language | English |
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Title of host publication | Hunting for the Dark |
Subtitle of host publication | The Hidden Side of Galaxy Formation. AIP Conference Proceedings |
Editors | Victor P. Debattista, Cristina C. Popescu |
Pages | 289-290 |
Number of pages | 2 |
Volume | 1240 |
DOIs | |
Publication status | Published - Jun-2010 |
Keywords
- spiral galaxies
- star formation
- stellar rotation
- merging
- Galaxy mergers
- collisions
- and tidal interactions