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.
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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
kpc





y
position_y
float
kpc





z
position_z
float
kpc





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
km/s





y
velocity_y
float
km/s





z
velocity_z
float
km/s





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}}







Format


Download







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
kpc



y
kpc



z
kpc



x
km/s



y
km/s



z
km/s