Do galaxies produce their own gaseous halos or do gaseous halos produce their own galaxies? To distinguish between gas circulating around an individual galaxy, and gas accreting from the outside, IT…
Ended Grant For Research Awarded Last action
- Contract number
- NNX10AI70G
- Awardee
-
University Of Wisconsin System UEI M73MZJWBNZN5
- Awarding agency
-
Shared Services Center
National Aeronautics and Space Administration
- Obligated
- $321,374
Award facts
- Contract value 100% obligated
- $321,374.23 Current and potential, with all options
- Completion date 100% complete
- Current and potential, with all options
- NAICS code
- Not on record
- Set-aside
- No set-aside
- Competition
- Full and Open Competition · 0 offers Basic Research
- Pricing
- Other
- Place of performance
- Whitewater, WI 53190, USA
Award details come from SAM.gov/FPDS.
Transactions
| Action | Obligated | Date |
|---|---|---|
| Funding Only Action | -$2,206 | |
| Other Administrative Action | $0 | |
| Other Administrative Action | $0 | |
| Other Administrative Action | $0 | |
| Funding Only Action | $101,037 | |
| Other Administrative Action | $0 | |
| Funding Only Action | $107,811 | |
| Original award | $114,732 |
Description
Do galaxies produce their own gaseous halos or do gaseous halos produce their own galaxies? To distinguish between gas circulating around an individual galaxy, and gas accreting from the outside, IT is necessary to develop kinematic tests to understand what physical processes affect the inflow, outflow, and rotation of the gas. This project will develop two classes of models to determine the kinematical signature of different types of flows: 1. Test cloud models of both galactic circulation and extragalactic accretion. We will calculate the orbits of large ensembles of test clouds in an adjustable galactic gravitational potential, using different density and velocity fields, and including drag, fragmentation, and coalescence. We will provide IDL-based visualization tools for galactic and extragalactic observers, including a web-interface for limited cloud calculations. These simulations will be used to (a) constrain the timescale for star-gas separation in the galactic halo, (b) constrain models of extragalactic gaseous accretion and identify what factors determine the ultimate fate of the accreted gas, and (c) track the overall mass and angular momentum flux for different accretion and circulation scenarios. 2. Three dimensional MHD models of galactic fountain flows. We will develop 3D MHO models of galactic circulation, with a range of assumptions for supernova energy input, pressure support, viscosity, and boundary conditions. These simulations will yield a globally consistent model for the velocity field of the diffuse extended ISM, predictions for how the velocity will vary with radius and height for different vertical configurations, and constraints on mass and angular momentum redistribution in the diffuse phase.
Quick answers
Who was awarded contract NNX10AI70G?
NNX10AI70G was awarded to University Of Wisconsin System by Shared Services Center (National Aeronautics and Space Administration) on May 20, 2010.
How much is contract NNX10AI70G worth?
The government has obligated $321,374 on NNX10AI70G.
Was contract NNX10AI70G competed?
The extent of competition for NNX10AI70G was full and open competition. The government received 0 offers.
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