Introduction

AnastrisTNG is a python package for processing and analyzing the cosmological simulation IllustrisTNG.

Installation

for 3.8 =< Python version <3.10:

git clone https://github.com/wx-ys/AnastrisTNG.git

for Python version >=3.10 and pynbody version >=2.0:

git clone -b release-v2.0.0 https://github.com/wx-ys/AnastrisTNG.git

Install this in editable mode.

cd AnastrisTNG
pip install -e .

AnastrisTNG uses the following python packages:

• numpy, scipy
• pynbody
• h5py
• tqdm
• six
• numba

Feature

• Supports TNG50, TNG100 and TNG300, including all data units.

• Quickly explore galaxy evolution history, merger history, halo evolution history.

• Analyze galactic interactions under the same coordinate system.

• Analyze groupcatalog, trace gas particles, etc

• Easy to view the radial and vertical distribution of the constituent properties of galaxies, including 3D properties and 2D projection properties.

• Quickly (tens of seconds) check galaxy star formation history over time and space (not public). If you're interested, please contact me lushuai@stu.xmu.edu.cn.

Usage

from AnastrisTNG import TNGsimulation 
BasePath = 'filepath'       
snap=99  #snapshot

Snapshot=TNGsimulation.Snapshot(BasePath,snap) # use the data of snapshot99

Snapshot.load_halo(400)    #load a halo(id=400)
Snapshot.load_subhalo(8)    #load a subhalo(id=8)

# load a single subhalo
sub = Snapshot.load_particle(ID=10, groupType='Subhalo', decorate=True)
sub.physical_units() #in physical unit
sub.face_on(alignwith='star',rmax=8) # face on, based on stellar angular momentum.

See examples for more details,

Maintainers

@wx-ys.

License

MIT © Shuai Lu

Acknowledgments

• illustris_python
• pytreegrav
• pynbody