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A previous study of the X-ray luminosity function of the X-ray sources in thefield of the Draco dwarf spheroidal (dSph) galaxy indicated the presence of apopulation of unknown X-ray sources in the soft energy range of 0.5-2 keV. In2015, Draco dSph was observed again in twenty-six deep XMM-Newton, observationsproviding an opportunity for a new study of the yet unclassified sources. Weapply the classification criteria presented in our previous multi-wavelengthstudy of the X-ray sources of the Draco dSph to the sources detected in thecombined 2009 and 2015 XMM-Newton data set. These criteria are based on X-raystudies and properties of the optical, near-infrared, and mid-infraredcounterparts and allows us to distinguish background active galacticnuclei~(AGNs) and galaxies from other types of X-ray sources. We present theclassification of X-ray sources, for which the counterpart is identified as astellar object based on our criteria from multi-wavelength data. We identifythree new symbiotic stars in the Draco dSph with X-ray luminosities between$\sim$3.5$\times10^{34}$ erg s$^{-1}$ and 5.5$\times10^{34}$ erg s$^{-1}$. TheX-ray spectral analysis shows that two of the classified symbiotic stars are$\beta$-type. This is the first identification of this class of symbiotic starsin a nearby galaxy. Eight sources are classified as Galactic M dwarfs in thefield of the Draco dSph. The distances of these M dwarfs arebetween$\sim$140-800 pc, their X-ray luminosities are between $10^{28}-10^{29}$erg s$^{-1}$ and the logarithmic ratio of X-ray to bolometric luminosity,log$(\frac{L_\text{X}}{L_\text{bol}})$, is between $-3.4$ to $-2.1$. Themultiple observations allowed us to investigate flare activity of the M dwarfs.Moreover, we classified three foreground sources, located at distances of theorder of $\sim$1-3 kpc in the field of the Draco dSph.

Classification of low-luminosity stellar X-ray sources in the field of the Draco dwarf spheroidal galaxy