self.kdtree.populate(sm, 'v_disp', nn=nsmooth, smooth=self['smooth'], rho=self['rho'])
if config['verbose']: print 'Velocity dispersion done.'
return sm
@SimSnap.derived_quantity
def age(self) :
return self.properties['time'].in_units(self['tform'].units, **self.conversion_context()) - self['tform']
bands_available = ['u','b','v','r','i','j','h','k','U','B','V','R','I',
'J','H','K']
for band in bands_available :
X = lambda s, b=str(band): analysis.luminosity.calc_mags(s,band=b)
X.__name__ = band+"_mag"
SimSnap.derived_quantity(X)
X = lambda s, b=str(band): (10**(-0.4*s[b+"_mag"]))*s['rho']/s['mass']
X.__name__ = band+"_lum_den"
SimSnap.derived_quantity(X)
@SimSnap.derived_quantity
def theta(self) :
"""Angle from the z axis, from [0:2pi]"""
return np.arccos(self['z']/self['r'])
@SimSnap.derived_quantity
def alt(self) :
"""Angle from the horizon, from [-pi/2:pi/2]"""
return np.pi/2 - self['theta']
'u', 'b', 'v', 'r', 'i', 'j', 'h', 'k', 'U', 'B', 'V', 'R', 'I', 'J', 'H',
'K'
]
def lum_den_template(band, s):
val = (10**(-0.4 * s[band + "_mag"])) * s['rho'] / s['mass']
val.units = s['rho'].units / s['mass'].units
return val
for band in bands_available:
X = lambda s, b=str(band): analysis.luminosity.calc_mags(s, band=b)
X.__name__ = band + "_mag"
X.__doc__ = band + " magnitude from analysis.luminosity.calc_mags" ""
SimSnap.derived_quantity(X)
lum_den = functools.partial(lum_den_template, band)
lum_den.__name__ = band + "_lum_den"
lum_den.__doc__ = "Luminosity density in astronomy-friendly units: 10^(-0.4 %s_mag) per unit volume. " \
"" \
"The magnitude is taken from analysis.luminosity.calc_mags."%band
SimSnap.derived_quantity(lum_den)
@SimSnap.derived_quantity
def theta(self):
"""Angle from the z axis, from [0:2pi]"""
return np.arccos(self['z'] / self['r'])
"""Stellar age determined from formation time and current snapshot time"""
return self.properties['time'].in_units(self['tform'].units, **self.conversion_context()) - self['tform']
bands_available = ['u', 'b', 'v', 'r', 'i', 'j', 'h', 'k', 'U', 'B', 'V', 'R', 'I',
'J', 'H', 'K']
def lum_den_template(band, s):
val = (10 ** (-0.4 * s[band + "_mag"])) * s['rho'] / s['mass']
val.units = s['rho'].units/s['mass'].units
return val
for band in bands_available:
X = lambda s, b=str(band): analysis.luminosity.calc_mags(s, band=b)
X.__name__ = band + "_mag"
X.__doc__ = band + " magnitude from analysis.luminosity.calc_mags"""
SimSnap.derived_quantity(X)
lum_den = functools.partial(lum_den_template,band)
lum_den.__name__ = band + "_lum_den"
lum_den.__doc__ = "Luminosity density in astronomy-friendly units: 10^(-0.4 %s_mag) per unit volume. " \
"" \
"The magnitude is taken from analysis.luminosity.calc_mags."%band
SimSnap.derived_quantity(lum_den)
@SimSnap.derived_quantity
def theta(self):
"""Angle from the z axis, from [0:2pi]"""
return np.arccos(self['z'] / self['r'])
def age(self):
"""Stellar age determined from formation time and current snapshot time"""
return self.properties['time'].in_units(
self['tform'].units, **self.conversion_context()) - self['tform']
bands_available = [
'u', 'b', 'v', 'r', 'i', 'j', 'h', 'k', 'U', 'B', 'V', 'R', 'I', 'J', 'H',
'K'
]
for band in bands_available:
X = lambda s, b=str(band): analysis.luminosity.calc_mags(s, band=b)
X.__name__ = band + "_mag"
X.__doc__ = band + " magnitude from analysis.luminosity.calc_mags" ""
SimSnap.derived_quantity(X)
X = lambda s, b=str(band): (10**
(-0.4 * s[b + "_mag"])) * s['rho'] / s['mass']
X.__name__ = band + "_lum_den"
X.__doc__ = band + \
" luminosity density from analysis.luminosity.calc_mags"""
SimSnap.derived_quantity(X)
@SimSnap.derived_quantity
def theta(self):
"""Angle from the z axis, from [0:2pi]"""
return np.arccos(self['z'] / self['r'])
