Observations and Simulation of N4676 ("The Mice" =
Arp 242 = UGC 7938/9)
John Hibbard, NRAO
The HI data were obtained at the
VLA in 5/91 & 5/92.
The Halpha and R-band data were
obtained with the KPNO 2.1m in 3/92.
The BVRK-band data were obtained with the UH88" in 1995-1997.
Halpha velocity data from
Mihos, Bothun & Richstone, 1993, ApJ 418, 82.
CO data were obtained
from OVRO with Min Yun in 12/94.
Simulation run with
Josh Barnes,
Institute for Astronomy.
Simulations (J. Barnes, MNRAS, 2003, submitted. Hibbard &
Barnes in prep):
Trade study done with Treecode, N=16,000, no gas. Optimized
velocity field in 20 runs. High-res model run with N=2E20=1million
particles. 4 runs varying Rperi.
!!!WARNING!!! Work in progress!!
-
Josh Barnes' webpage on Models of Interacting Galaxies
-
mpeg of Simulation. Time evolution. From
Josh Barnes'
SAAS-Fee lectures.
-
mpeg of Simulation Rotation of best match. Also from
Josh Barnes'
SAAS-Fee lectures.
-
Josh Barnes' mpeg movie of high-resolution particle simulation.
- MPEG of fit of N-body data (red dots) to HI (blue circles) and CO (black circle):
4 plane view (RA-Dec, Vz-Dec, RA-Vz, RA-z)
(2.1MB mpg)
4 plane view (RA-Dec, Vz-Dec, RA-Vz,
RA-z) (0.9MB animated gif)
2 plane view (RA-Dec, Vz-Dec (1.1MB mpg)
- Final N-body Fit to Observations
- Top view, different color coding
- N-body Time Evolution
- Modeling trade study
(varying arguement of periapses only)
- 1 Million particle simulation
Back to home
Maintained by
jhibbard
@ nrao.edu
Last modified: Fri Oct 10 13:22:36 EDT 2003