Interacting Galaxies: Near and Far

Research Interests

J. E. Hibbard, NRAO-CV

Interactions can have a decisive effect on galaxy evolution, up to an including galaxy transformation (turning a galaxy from one type into another, e.g. spirals to ellipticals; dIrr to dEs). In the early universe, when galaxies were relatively much more gas rich, this process may be indistinguishable from galaxy formation.

I study interacting galaxies (primiarily involving at least one disk galaxy) in order to understand the effects on the structure, dynamics, and populations of the participants. The main questions I am interested in:

When was the Hubble Sequence in Place?
What existed before the Hubble Sequence?
How will the Hubble Sequence evolve?

near

far

Near:

HI in Interacting Galaxies
Model Matching
1. Identikit
Simulating Observations
1. Masses of Tidal Dwarf Galaxies
Evolutionary Endpoints of Mergers
More pretty pictures
1. HST of Toomre Seqence
2. Color of Tidal Tails

Far:

Simulating Mergers at Higher Redshift
To do: more extensive comparison with large UBVR imaging survey of peculiars
Can extend to higher redshift with HST MUV survey

Former Student Projects

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Maintained by jhibbard @ nrao.edu

Last modified: Fri Mar 26 16:54:19 EST 2004