guide to supplementary data products for "The Binary Fraction of Stars in Dwarf Galaxies: The Cases of Draco and Ursa Minor", by Spencer et al. (2018)

Individual fits files are included for all individual spectroscopic targets and are named raAAA.AAAAAAdecBBBB.BBBBBBhjdCCCCCCC.CCC.fits, where

AAA.AAAAAA = right ascension of target (degrees)
BBBB.BBBBBB = declination of target (degrees)
CCCCCCC.CCC = heliocentric julian date of observation (days)

Each fits file includes the following fields:

radeg: right ascension (degrees)

decdeg: declination (degrees)

hjd: heliocentric julian date (days)

snratio: median signal to noise ratio per pixel

vmoments: four-element array containing mean (km/s), variance (km^2/s^2), skewness and kurtosis of posterior PDF for velocitiy 

teffmoments: four-element array containing mean (K), variance (K^2), skewness and kurtosis of posterior PDF for T_eff

loggmoments: four-element array containing mean (dex), variance (dex^2), skewness and kurtosis of posterior PDF for logg

fehmoments: four-element array containing mean (dex), variance (dex^2), skewness and kurtosis of posterior PDF for [Fe/H]

pdfsample: 16 x 1000-element array containing 1000 random draws from the 15-dimensional posterior PDF generated by MultiNest (Feroz & Hobson, 2008, MNRAS, 384, 449; 2009, MNRAS, 398, 1601; see below for labels of each dimension)

lambda: wavelength (angstroms)

skysub: sky-subtracted spectrum

varskysub: variance in skysub

bestfit: best-fitting model spectrum

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The 16 x 1000-element array in the 'pdfsample' field contains 1000 random draws from the 15-dimensional posterior PDF generated by MultiNest.  The quantities listed in each of the sixteen dimensions are (see Walker et al. 2015, MNRAS, 448, 2717 for details of model):

1. velocity (km/s)
2. Teff (K)
3. logg (dex)
4. [Fe/H] (dex)
5. p0
6. p1
7. p2
8. p3
9. p4
10. p5
11. h (angstroms)
12. q1 (km/s)
13. q2 (km/s)
14. s2
15. s1
16. log-likelihood