Title: Discovery of Two Different Full Disk Evolutionary Patterns of M-Type T Tauri Stars with LAMOST DR8 Authors: Haerken H., Li G.-W., Li M., Duan F., Zhao Y. Table: M-type TTS catalog ================================================================================ Byte-by-byte Description of file: datafile1.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 4 I4 --- Seq Sequential running number 6- 14 I9 --- LAMOST LAMOST Observation Identifier [obsid] 16- 34 I19 --- Gaia Gaia EDR3 identifier [source_id] 36- 54 A19 --- ALLWISE ALLWISE position-based designation 56- 65 F10.6 deg RAdeg Right Ascension, LAMOST, decimal degrees (J2000) 67- 75 F9.6 deg DEdeg Declination, LAMOST, decimal degrees (J2000) 77- 86 F10.6 deg GLON Galactic longitude 88- 97 F10.6 deg GLAT Galactic latitude 99-102 I4 K Teff Surface Effective Temperature (1) 104-107 F4.2 [cm.s-2] logg log, surface gravity (1) 109-109 A1 --- l_logAge1 Limit on logAge1 110-113 F4.2 [yr] logAge1 PARSEC-based, log, Age, years (2) 115-118 F4.2 Msun Mstar1 PARSEC-based, Mass, solar units (2) 120-121 A2 --- SpT Spectral Type 123-128 F6.2 10-10m EWHa Equivalent width, H{alpha}, Angstroms 130-133 F4.2 10-10m FWHM Full-width at Half max, H{alpha} 135-136 A2 --- LiI [-NY? ] Li I in Medium-resolution spectra? (3) 138-138 A1 --- TTS [WC] TTS Type (4) 140-140 A1 --- Acc [-Y] Y = Accretion detected 142-142 A1 --- Disk [-Y] Y = Full disk detected 144-144 A1 --- New [-Y] Y = Newly spectrally identified TTS 146-150 F5.2 mag E(Ks-W3) ?="" Color excess, Ks-W3 152-156 F5.2 mag E(Ks-W4) ?="" Color excess, Ks-W4 158-161 F4.2 mag Ks-W2 Color, Ks-W2 163-167 F5.2 mas plx Gaia EDR3 parallax 169-169 A1 --- l_logAge2 [