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Fields Dictionary

Field	Variable	Type	Units	Description
galaxy	galaxy	byte		Simulated galaxy
lsr	lsr	byte		Local Standard of Rest (LSR) between 0-2
slice	slice	byte		slices between 0-9
Indices		float
source_id	source_id	long		Unique source identifier (per mock catalog)
random_index	random_index	long		Random index used to select subsets
parentid	parentid	long		array index of the generating star particle in the snapshot file
partid	partid	short		0 if phase-space coordinates are identical to generating star particle, 1 otherwise
Astrometry		float
Coord		float	deg
ra	ra	double	deg	Right ascension
ra_error	ra_error	double	deg	Standard error of right ascension
dec	dec	double	deg	Declination
dec_error	dec_error	double	deg	Standard error of declination
parallax	parallax	double	mas	Parallax
parallax_error	parallax_error	double	mas	Standard error of parallax
parallax_over_error	parallax_over_error	float		Parallax divided by its error
pmra	pmra	double	mas/year	Proper motion in right ascension direction
pmra_error	pmra_error	double	mas/year	Standard error of proper motion in right ascension direction
pmdec	pmdec	double	mas/year	Proper motion in declination direction
pmdec_error	pmdec_error	double	mas/year	Standard error of proper motion in declination direction
l	l	double	deg	Galactic longitude
b	b	double	deg	Galactic latitude
Phase Space		float
ra_true	ra_true	double	deg	true right ascension
dec_true	dec_true	double	deg	true declination
dmod_true	dmod_true	double	mag	true distance modulus
parallax_true	parallax_true	double	mas	true parallax
pmra_true	pmra_true	double	mas/year	true proper motion in right ascension direction
pmdec_true	pmdec_true	double	mas/year	true proper motion in declination direction
radial_velocity_true	radial_velocity_true	double	km/s	true radial velocity
l_true	l_true	double	deg	true galactic longitude
b_true	b_true	double	deg	true galactic latitude
px_true	px_true	double	kpc	true position relative to LSR
py_true	py_true	double	kpc	true position relative to LSR
pz_true	pz_true	double	kpc	true position relative to LSR
vx_true	vx_true	double	km/s	true velocity relative to LSR
vy_true	vy_true	double	km/s	true velocity relative to LSR
vz_true	vz_true	double	km/s	true velocity relative to LSR
Photometry		float
phot_g_mean_mag		float	mag
mag	phot_g_mean_mag	float	mag	Extincted apparent G-band mean magnitude
mag_error	phot_g_mean_mag_error	float	mag	Standard error of G-band mean magnitude
mag_true	phot_g_mean_mag_true	float	mag	true (i.e. after extinction, but before error convolution) apparent G-Band mean magnitude
mag_int	phot_g_mean_mag_int	float	mag	intrinsic (i.e. after extinction, but before error convolution) apparent G-Band mean magnitude
phot_bp_mean_mag		float	mag
mag	phot_bp_mean_mag	float	mag	Extincted apparent G_Bp-band mean magnitude
mag_error	phot_bp_mean_mag_error	float	mag	Standard error of G_Bp-band mean magnitude
mag_true	phot_bp_mean_mag_true	float	mag	true apparent of G_Bp-band mean magnitude
mag_int	phot_bp_mean_mag_int	float	mag	intrinsic apparent of G_Bp-band mean magnitude
phot_rp_mean_mag		float	mag
mag	phot_rp_mean_mag	float	mag	Extincted apparent G_Rp-band mean magnitude
mag_error	phot_rp_mean_mag_error	float	mag	Standard error of G_Rp-band mean magnitude
mag_true	phot_rp_mean_mag_true	float	mag	true apparent of G_Rp-band mean magnitude
mag_int	phot_rp_mean_mag_int	float	mag	intrinsic apparent of G_Rp-band mean magnitude
bp_rp	bp_rp	float	mag	BP - RP colour
bp_rp_true	bp_rp_true	float	mag	true BP - RP colour
bp_rp_int	bp_rp_int	float	mag	intrinsic BP - RP colour
bp_g	bp_g	float	mag	BP - G colour
bp_g_true	bp_g_true	float	mag	true BP - G colour
bp_g_int	bp_g_int	float	mag	intrinsic BP - G colour
g_rp	g_rp	float	mag	G - RP colour
g_rp_true	g_rp_true	float	mag	true G - RP colour
g_rp_int	g_rp_int	float	mag	intrinsic G - RP colour
a_g_val	a_g_val	float	mag	line-of-sight extinction in the G band, A_G
e_bp_min_rp_val	e_bp_min_rp_val	float	mag	line-of-sight reddening E(BP-RP)
Extinction		float
lognh	lognh	float	cm-2	log_10 equivalent H column density along line of sight to star
ebv	ebv	float	mag	E(B-V) reddening, calculated from equivalent N_H
A0	A0	float	mag	A_0 extinction at 550 nm, assuming R_v = 3.1
Spectroscopy		float
radial_velocity	radial_velocity	double	km/s	Radial velocity
radial_velocity_error	radial_velocity_error	double	km/s	Radial velocity error
Stellar Parameters		float
teff_val	teff_val	float	K	stellar effective temperature
lum_val	lum_val	float	L_sun	stellar luminosity
mact	mact	float	\(M_\odot\)	current stellar mass
mtip	mtip	float	\(M_\odot\)	mass of a star at tip of giant branch for given age, metallicity
mini	mini	float	\(M_\odot\)	stellar mass on zero-age main sequence
age	age	float	log yr	log_10 stellar age; identical for all stars generated from the same particle
logg	logg	float	log cgs	surface gravity
Abundances		float	dex
feh	feh	float	dex	[Fe/H]
alpha	alpha	float	dex	[Mg/Fe]
carbon	carbon	float	dex	[C/H]
helium	helium	float	dex	[He/H]
nitrogen	nitrogen	float	dex	[N/H]
sulphur	sulphur	float	dex	[S/H]
oxygen	oxygen	float	dex	[O/H]
silicon	silicon	float	dex	[Si/H]
calcium	calcium	float	dex	[Ca/H]
magnesium	magnesium	float	dex	[Mg/H]
neon	neon	float	dex	[Ne/H]

About Catalog

Sanderson et al 2018.
Data release v- ____-__-__.
The ananke framework, which generates realistic synthetic stellar surveys from cosmological baryonic simulations, was used to create a set of synthetic phase-space surveys designed to resemble Data Release 2 of the Gaia astrometric survey from different solar viewpoints in the Latte suite of FIRE-2 simulations of Milky Way-mass galaxies. The synthetic surveys are described in detail in Sanderson et al 2018. The full dataset is available here.

More under:

milkyway/ananke

galaxy Simulated galaxy	lsr Local Standard of Rest (LSR) between 0-2	slice slices between 0-9	Indices				Astrometry													Phase Space															Photometry																							Extinction			Spectroscopy		Stellar Parameters							Abundances dex
			source_id Unique source identifier (per mock catalog)	random_index Random index used to select subsets	parentid array index of the generating star particle in the snapshot file	partid 0 if phase-space coordinates are identical to generating star particle, 1 otherwise	Coord deg				parallax mas Parallax	parallax_error mas Standard error of parallax	parallax_over_error Parallax divided by its error	pmra mas/year Proper motion in right ascension direction	pmra_error mas/year Standard error of proper motion in right ascension direction	pmdec mas/year Proper motion in declination direction	pmdec_error mas/year Standard error of proper motion in declination direction	l deg Galactic longitude	b deg Galactic latitude	ra_true deg true right ascension	dec_true deg true declination	dmod_true mag true distance modulus	parallax_true mas true parallax	pmra_true mas/year true proper motion in right ascension direction	pmdec_true mas/year true proper motion in declination direction	radial_velocity_true km/s true radial velocity	l_true deg true galactic longitude	b_true deg true galactic latitude	px_true kpc true position relative to LSR	py_true kpc true position relative to LSR	pz_true kpc true position relative to LSR	vx_true km/s true velocity relative to LSR	vy_true km/s true velocity relative to LSR	vz_true km/s true velocity relative to LSR	phot_g_mean_mag mag				phot_bp_mean_mag mag				phot_rp_mean_mag mag				bp_rp mag BP - RP colour	bp_rp_true mag true BP - RP colour	bp_rp_int mag intrinsic BP - RP colour	bp_g mag BP - G colour	bp_g_true mag true BP - G colour	bp_g_int mag intrinsic BP - G colour	g_rp mag G - RP colour	g_rp_true mag true G - RP colour	g_rp_int mag intrinsic G - RP colour	a_g_val mag line-of-sight extinction in the G band, A_G	e_bp_min_rp_val mag line-of-sight reddening E(BP-RP)	lognh cm-2 log_10 equivalent H column density along line of sight to star	ebv mag E(B-V) reddening, calculated from equivalent N_H	A0 mag A_0 extinction at 550 nm, assuming R_v = 3.1	radial_velocity km/s Radial velocity	radial_velocity_error km/s Radial velocity error	teff_val K stellar effective temperature	lum_val L_sun stellar luminosity	mact \(M_\odot\) current stellar mass	mtip \(M_\odot\) mass of a star at tip of giant branch for given age, metallicity	mini \(M_\odot\) stellar mass on zero-age main sequence	age log yr log_10 stellar age; identical for all stars generated from the same particle	logg log cgs surface gravity	feh dex [Fe/H]	alpha dex [Mg/Fe]	carbon dex [C/H]	helium dex [He/H]	nitrogen dex [N/H]	sulphur dex [S/H]	oxygen dex [O/H]	silicon dex [Si/H]	calcium dex [Ca/H]	magnesium dex [Mg/H]	neon dex [Ne/H]
			source_id Unique source identifier (per mock catalog)	random_index Random index used to select subsets			ra deg Right ascension	ra_error deg Standard error of right ascension	dec deg Declination	dec_error deg Standard error of declination	parallax mas Parallax	parallax_error mas Standard error of parallax	parallax_over_error Parallax divided by its error	pmra mas/year Proper motion in right ascension direction		pmdec mas/year Proper motion in declination direction		l deg Galactic longitude	b deg Galactic latitude	ra_true deg true right ascension	dec_true deg true declination	dmod_true mag true distance modulus	parallax_true mas true parallax			radial_velocity_true km/s true radial velocity	l_true deg true galactic longitude	b_true deg true galactic latitude	px_true kpc true position relative to LSR	py_true kpc true position relative to LSR	pz_true kpc true position relative to LSR	vx_true km/s true velocity relative to LSR	vy_true km/s true velocity relative to LSR	vz_true km/s true velocity relative to LSR	mag mag Extincted apparent G-band mean magnitude	mag_error mag Standard error of G-band mean magnitude	mag_true mag true (i.e. after extinction, but before error convolution) apparent G-Band mean magnitude	mag_int mag intrinsic (i.e. after extinction, but before error convolution) apparent G-Band mean magnitude	mag mag Extincted apparent G_Bp-band mean magnitude	mag_error mag Standard error of G_Bp-band mean magnitude	mag_true mag true apparent of G_Bp-band mean magnitude	mag_int mag intrinsic apparent of G_Bp-band mean magnitude	mag mag Extincted apparent G_Rp-band mean magnitude	mag_error mag Standard error of G_Rp-band mean magnitude	mag_true mag true apparent of G_Rp-band mean magnitude	mag_int mag intrinsic apparent of G_Rp-band mean magnitude	bp_rp mag BP - RP colour	bp_rp_true mag true BP - RP colour	bp_rp_int mag intrinsic BP - RP colour	bp_g mag BP - G colour	bp_g_true mag true BP - G colour	bp_g_int mag intrinsic BP - G colour	g_rp mag G - RP colour	g_rp_true mag true G - RP colour	g_rp_int mag intrinsic G - RP colour	a_g_val mag line-of-sight extinction in the G band, A_G	e_bp_min_rp_val mag line-of-sight reddening E(BP-RP)		ebv mag E(B-V) reddening, calculated from equivalent N_H	A0 mag A_0 extinction at 550 nm, assuming R_v = 3.1	radial_velocity km/s Radial velocity	radial_velocity_error km/s Radial velocity error	teff_val K stellar effective temperature	lum_val L_sun stellar luminosity	mact \(M_\odot\) current stellar mass		mini \(M_\odot\) stellar mass on zero-age main sequence		logg log cgs surface gravity	feh dex [Fe/H]	alpha dex [Mg/Fe]	carbon dex [C/H]	helium dex [He/H]	nitrogen dex [N/H]	sulphur dex [S/H]	oxygen dex [O/H]	silicon dex [Si/H]	calcium dex [Ca/H]	magnesium dex [Mg/H]	neon dex [Ne/H]

Ananke: GAIA on FIRE

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Ananke: GAIA on FIRE

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