Evolved massive stars at low-metallicity

We present a clean, magnitude-limited (IRAC1 or WISE1$\leq$15.0 mag) multiwavelength source catalog for the LMC. The was built upon crossmatching ($1''$) and deblending ($3''$) between SEIP list Gaia DR2, with strict constraints on astrometric solution to remove foreground contamination. contains 197,004 targets in 52 different bands including 2 ultraviolet, 21 optical, 29 infrared bands. Additional information about radial velocities spectral/photometric classifications were collected from literature. bright end of our sample is mostly comprised blue helium-burning stars (BHeBs) red HeBs inevitable contamination main sequence at end. After applying modified magnitude color cuts based previous studies, we identify rank 2,974 RSG, 508 YSG, 4,786 BSG candidates LMC six CMDs. comparison CMDs SMC indicates that most distinct difference appears optical near-infrared CMDs, where cool evolved (e.g., RSGs, AGB, RGs) are located, which likely due effect metallicity SFH. Further quantitative colors massive star equal absolute bins suggests that, there basically no candidates, but large discrepancy RSG as redder than ones, may be combined both spectral type mass-loss rate, also age effect. $T_{\rm eff}$ populations derived reddening-free $(J-K_{\rm S})_0$. ranges $35008000$ larger uncertainties towards hotter stars.