SAPFIRE: Streams on FIRE
Plot type: Histogram bins the data by a single field and displays count of objects per bin. Heatmap bins the data by two fields and displays count as color. Conditional distribution bins the data by one field and displays the distribution of a second field within that bin as a boxplot (range and quartiles). Shows a scatterplot of a (random subset) of actual data points.
For log functionality, set the filter to enable only positive values.
For log functionality, set the filter to enable only positive values.
For log functionality, set the filter to enable only positive values.
Count: Choose whether the object count per bin is shown in linear or log scale. Count is shown on the Y axis. Count is shown on the color (Z) axis.
Active Filters
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μ : {{filter.aggs.avg?filter.render(filter.aggs.avg):'no data'}}
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Example python code to apply the above filters and retrieve data. To use, download and install this module .


Fields Dictionary
Field Variable Type Units Description
simname simname byte
index index byte
star particle id st_index integer star particle indices at the present day snapshot (z=0)
position float kpc positions of star particles (x,y,z) in principal axes cartesian coordinates with respect to the center of the host galaxy. The z-direction is perpendicular to the disk.
X position_x float
Y position_y float
Z position_z float
velocity float km/s velocities of star particles (vx, vy, vz) in principal axes cartesian coordinates with respect to the center of the host galaxy. The z-direction is perpendicular to the disk.
x velocity_x float
y velocity_y float
z velocity_z float
mass particle_mass_z0 float particle masses at present day snapshot (z=0) in solar masses
iron abundance metallicity_iron float dex iron abundances [Fe/H] of star particles
alpha-element abundance metallicity_alpha float dex alpha-element abundances [alpha/H] of star particles
infall time t_infall float Gyr infall look-back time of the progenitor defined as the first virial radius crossing
peak stellar mass time t_peak float Gyr peak stellar mass look-back time throughout the evolution of the progenitor
stream-formation time t_stream float Gyr stream-formation look-back time
infall mass mass_infall float M_sun total mass of the progenitor bound part at infall
infall stellar mass stellar_mass_infall float M_sun stellar mass of the progenitor bound part at infall
peak stellar mass stellar_mass_peak float M_sun peak stellar mass of the progenitor bound part throughout its evolution
present stellar mass stellar_mass_z0 float M_sun stellar mass of the stream at present day, defined as the sum of all the particle masses at present day
About Catalog

Streams And their Progenitors in FIRE cosmological simulations
Panithanpaisal et al 2021.
This is a catalogue of present-day simulated stellar streams with galaxy progenitors. These streams are selected from the Latte suite and ElVIS suite of FIRE-2 cosmological simulations of isolated and paired Milky Way-mass galaxies. The stream classification and determination of important timescales are described in detail in Panithanpaisal et al 2021.
Accompanying potential models for all of the simulations can be found here.
This dataset is made available under Creative Commons BY 4.0

Active Filters

{{filter.field.name}}

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Raw Data
simname index star particle id star particle indices at the present day snapshot (z=0) position kpc positions of star particles (x,y,z) in principal axes cartesian coordinates with respect to the center of the host galaxy. The z-direction is perpendicular to the disk. velocity km/s velocities of star particles (vx, vy, vz) in principal axes cartesian coordinates with respect to the center of the host galaxy. The z-direction is perpendicular to the disk. mass particle masses at present day snapshot (z=0) in solar masses iron abundance
dex iron abundances [Fe/H] of star particles
alpha-element abundance
dex alpha-element abundances [alpha/H] of star particles
infall time
Gyr infall look-back time of the progenitor defined as the first virial radius crossing
peak stellar mass time
Gyr peak stellar mass look-back time throughout the evolution of the progenitor
stream-formation time
Gyr stream-formation look-back time
infall mass
M_sun total mass of the progenitor bound part at infall
infall stellar mass
M_sun stellar mass of the progenitor bound part at infall
peak stellar mass
M_sun peak stellar mass of the progenitor bound part throughout its evolution
present stellar mass
M_sun stellar mass of the stream at present day, defined as the sum of all the particle masses at present day
X Y Z x y z