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Planetary Nebula Library: Hydro Runs

Reason for Library

Here we explore a variety possible parameters and environments that can shape planetary nebulae, presented in various forms. This library will record a number of combinations of different density backgrounds and types of flows and also any parameter changes within those different combinations. The environments and flow structures are listed below. Environments:

• Constant Ambient: The surrounding density is initially constant.
• Stratified Ambient: The surrounding density falls off as 1/r².
• Toroidal Ambient: The surrounding density decays from the equator to the pole as defined in ​Frank & Mellema, 1994 Apj by the variables \alpha_{t} and \beta_{t}.
  • \alpha_{t} describes the contrast in density of the torus from the pole to the equator.
  • \beta_{t} describes how elliptical or spherical the torus is. Small values coincide with a more elliptical torus while values closer to 1 indicate a more spherical torus.

Flow Structures:

• Clump: A spherical cloud of gas.
• Jet: A constant stream of gas.
• Diverging Wind: A constant stream of gas that sweeps an arc in the surrounding medium.

The tables below will be updated periodically with movies of new runs and their parameters with the newest runs appearing first.

Please see ​Ruka's PN Page for more movies and additional information.

Update 9/06: In order to keep the images and movies consistent with those on ​Ruka's PN Page I am converting all runs into cgs. This will take a little time.

A list of all changes made to this page can be found ​here.

Toroidal + Stratified Ambient

Jet

Jet Parameters

The following is what we consider the standard run for a jet in a torodial + stratified ambient.

Date	Jet Radius [AU]	Jet Density [particles/cm3]	Jet Velocity [km/s]	Jet Temperature [K]	Ambient Density [particles/cm3]	Ambient Temperature [K]	\alpha_{t}	\beta_{t}	Density	Thermal Pressure	Ram Pressure
8.27.2013	500	40,000	100	10	400	1	.7	.8	Updated 9/06 ​movie	8/28: A correction has been to this model. The original movie can still be seen following the "old movie" link. The image corresponds to the new movie.​movie ​old movie	This doesn't tell us anything new. ​movie

The following table shows different runs where changes made to the jet parameters are given in bold.

Date	Jet Radius [AU]	Jet Density [particles/cm3]	Jet Velocity [km/s]	Jet Temperature [K]	Density	Thermal Pressure
8.30.2013	500	40,000	200	10	Updated 9/06 This one has a shorter time period due to the run reaching it's time limit. ​movie	​movie
9.02.2013	500	40,000	300	10	Updated 9/06 ​movie	​movie
9.04.2013	500	40,000	100	10,000	​movie	​movie

Ambient Parameters

Date	Ambient Density [particles/cm3]	Ambient Temperature [K]	\alpha_{t}	\beta_{t}	Density	Thermal Pressure
9.05.2013	400	1	.3	.8	​movie
9.09.2013	400	1	.5	.8	​movie
9.09.2013	400	1	.9	.8