File Summary: -------------------------------------------------------------------------------- FileName Explanations ----------------------------------------------------------------- ReadMe This file mgiant.dat M giants catalog identified from the LAMOST DR5 mgiant.fits Fits version of mgiant.dat mdwarf.dat M dwarfs catalog identified from the LAMOST DR5 mdwarf.fits Fits version of mdwarf.dat -------------------------------------------------------------------------------- Byte-by-byte Description of file: mgiant.dat and mdwarf.dat --------------------------------------------------------------------------------------------------------------------- Bytes Format Units Label Explanations --------------------------------------------------------------------------------------------------------------------- 1- 19 A19 --- DESIGNATION object designation from the LAMOST DR5 21- 31 F11.6 deg RA object right ascension in LAMOST DR5 (J2000) 33- 43 F11.6 deg DEC object declination in LAMOST DR5 (J2000) 45- 49 F5.3 --- CaH2 spectral index of LAMOST spectrum 51- 55 F5.3 --- CaH3 spectral index of LAMOST spectrum 57- 61 F5.3 --- TiO5 spectral index of LAMOST spectrum 63- 67 F5.1 --- SNR singal to noise ratio of i filter in LAMOST spectrum 69- 76 A8 --- SpTy spectral subtype classified by the template-fit algorithm 78- 83 F6.3 mag Gmag0 dereddened G band magnitude from Gaia DR2 85- 90 F6.3 mag Gbp0 dereddened BP band magnitude from Gaia DR2 92- 97 F6.3 mag Grp0 dereddened RP band magnitude from Gaia DR2 99-104 F6.3 mag J0 dereddened J band magnitude from 2MASS 106-111 F6.3 mag H0 dereddened H band magnitude from 2MASS 113-118 F6.3 mag Ks0 dereddened Ks band magnitude from 2MASS 120-125 F6.3 mag W10 dereddened W1 band magnitude from WISE 127-132 F6.3 mag W20 dereddened W2 band magnitude from WISE 134-139 F6.2 mag EBV reddening from the 3D dust map 141-146 F6.0 pc Dist distance derived by the parallax in Gaia DR2 148-153 F6.0 km/s RV radial velocity measured from LAMOST spectrum 155-160 F6.1 --- [M/H] estimated photometric metallicity of M giants 162-167 F6.0 pc X Galactocentric coordinate points to the direction opposite to that of the Sun 169-174 F6.0 pc Y Galactocentric coordinate points to the direction of Galactic rotation 176-181 F6.0 pc Z Galactocentric coordinate points 183-188 F6.0 km/s U Galactic space velocity in X axis 190-195 F6.0 km/s V Galactic space velocity in Y axis 197-202 F6.0 km/s W Galactic space velocity in Z axis 205-206 A2 --- SFLAG label of subsamples (1) --------------------------------------------------------------------------------------------------------------------- Note (1): label of subsamples as follows: m = Comfirmed M type stars n = Non-M type stars c = Carbon stars w = White dwarf binaries u = Unconfirmed M type stars ---------------------------------------------------------------------------------------------------------------------