DATA ACCESS: http://lamost973.pku.edu.cn/site/data

Description of the first release of LSS-GAC value-added catalogues.

See Table6 of Yuan et al. 2015, MNRAS, 448, 855

http://adsabs.harvard.edu/abs/2015MNRAS.448..855Y

Col. |
Name |
Description |

1 |
spec_id |
LAMOST unique spectral ID, in format of date-plateid-spectrographid-fibreid |

2 |
date |
Date of observation |

3 |
plate |
LAMOST plate ID, not necessarily unique |

4 |
sp_id |
LAMOST spectrograph ID, ranging from 1 to 16 |

5 |
fibre_id |
LAMOST fibre ID for a given spectrograph, ranging from 1 to 250 |

6 |
platetype |
Plate type (`B', `M', `F' and `V') |

7 |
objid |
Object ID in the input catalogues |

8 |
objtype |
Initial object type from the survey input catalogues, could be stars (`star' and `Star'), emission line objects (`EMOs') and young stellar objects (`yso') |

9 |
snr_b |
S/N(4650A) per pixel |

10 |
snr_r |
S/N(7450A) per pixel |

11 |
ra |
Right Ascension of J2000.0 (deg) |

12 |
dec |
Declination of J2000.0 (deg) |

13 |
l |
Galactic longitude (deg) |

14 |
b |
Galactic latitude (deg) |

15 |
uqflag |
Uniqueness flag. If the target has been observed $n$ times, then uqflag runs from 1 to $n$, with 1 denoting the spectrum of the highest snr_b |

16 |
vr |
Radial velocity yielded by the LSP3, after corrected for a systematic offset of $-$3.5 kms~(kms) |

17 |
teff1 |
Teff yielded by the LSP3 from the weighted mean algorithm (K) |

18 |
logg1 |
Log g yielded by the LSP3 from the weighted mean algorithm (cm s$^{-2}$) |

19 |
feh1 |
[Fe/H] yielded by the LSP3 from the weighted mean algorithm (dex) |

20 |
teff2 |
Teff yielded by the LSP3 from the $chi^2$ minimization algorithm (K) |

21 |
logg2 |
Logg yielded by the LSP3 from the $chi^2$ minimization algorithm (cm s$^{-2}$) |

22 |
feh2 |
[Fe/H] yielded by the LSP3 from the $chi^2$ minimization algorithm (dex) |

23 |
teff |
Final teff~yielded by the LSP3 from the weighted mean algorithm, calibrated to photometric temperatures (K) |

24 |
logg |
Final logg~ yielded by the LSP3 from the weighted mean algorithm, same to logg1 in the current version (cm s$^{-2}$) |

25 |
feh |
Final feh~yielded by the LSP3 from the weighted mean algorithm, same to feh1 in the current version (dex) |

26 |
vr_err |
Error of radial velocity yielded by the LSP3 (kms) |

27 |
teff_err |
Error of the final teff~yielded by the LSP3 (K) |

28 |
logg_err |
Error of the final logg~yielded by the LSP3 (cm s$^{-2}$) |

29 |
feh_err |
Error of the final feh~yielded by the LSP3 (dex) |

30 |
flags[9] |
Flags assigned to the final LSP3
parameters |

31 |
fuv |
GALEX $FUV$ band magnitude (mag) % $-$99.00 if null |

32 |
nuv |
GALEX $NUV$ band magnitude (mag) |

33 |
g |
XSTPS-GAC $g$ band magnitude (mag) |

34 |
r |
XSTPS-GAC $r$ band magnitude (mag) |

35 |
i |
XSTPS-GAC $i$ band magnitude (mag) |

36 |
j |
2MASS $J$ band magnitude (mag) |

37 |
h |
2MASS $H$ band magnitude (mag) |

38 |
k |
2MASS $K_{rm s}$ band magnitude (mag) |

39 |
w1 |
WISE $W1$ band magnitude (mag) |

40 |
w2 |
WISE $W2$ band magnitude (mag) |

41 |
w3 |
WISE $W3$ band magnitude (mag) |

42 |
w4 |
WISE $W4$ band magnitude (mag) |

43 |
err_fuv |
Error of the GALEX $FUV$ magnitude (mag) % $-$99.00 if null |

44 |
err_nuv |
Error of the GALEX $NUV$ magnitude (mag) |

45 |
err_g |
Error of the XSTPS-GAC $g$ band magnitude (mag) |

46 |
err_r |
Error of the XSTPS-GAC $r$ band magnitude (mag) |

47 |
err_i |
Error of the XSTPS-GAC $i$ band magnitude (mag) |

48 |
err_j |
Error of the 2MASS $J$ band magnitude (mag) |

49 |
err_h |
Error of the 2MASS $H$ band magnitude (mag) |

50 |
err_k |
Error of the 2MASS $K_{rm s}$ band magnitude (mag) |

51 |
err_w1 |
Error of the WISE $W1$ band magnitude (mag) |

52 |
err_w2 |
Error of the WISE $W2$ band magnitude (mag) |

53 |
err_w3 |
Error of the WISE $W3$ band magnitude (mag) |

54 |
err_w4 |
Error of the WISE $W4$ band magnitude (mag) |

55 |
ph_qual_2mass |
2MASS photometric quality flag |

56 |
ph_qual_wise |
WISE photometric quality flag |

57 |
var_flg_wise |
WISE variability flag$^c$ |

58 |
ext_flg_wise |
WISE extended source flag$^c$ |

59 |
cc_flg_wise |
WISE contamination and confusion flag$^c$ |

60 |
ebv_sfd |
ebv~from the SFD extinction map (mag) |

61 |
ebv_sp |
ebv~ derived from the star pair method (mag) |

62 |
ebv_mod |
ebv~derived by comparing the observed and synthetic model atmosphere colours (mag) |

63 |
ebv_phot |
ebv~derived by fitting multi-band photometry to the empirical stellar loci (Chen et al. 2014) (mag) |

64 |
dist_em |
Distance derived using the empirical relations of absolute magnitudes as a function of stellar atmospheric parameters as yielded by the MILES stars except for RCs. Distances of RCs are derived assuming they are standard candles (kpc) |

65 |
dist_mod |
Distance derived from the theoretical isochrones of stellar models (kpc) |

66 |
dist_phot |
Distance derived from the photometric parallax method (Chen et al. 2014) (kpc) |

67 |
pmra_ppmxl |
Proper motion $mu_alphacosdelta$ in RA from the PPMXL catalogues (mas yr$^{-1}$) |

68 |
pmdec_ppmxl |
Proper motion $mu_delta$ in Dec from the PPMXL catalogues (mas yr$^{-1}$) |

69 |
epmra_ppmxl |
Proper motion error in RA from the PPMXL catalogues (mas yr$^{-1}$) |

70 |
epmdec_ppmxl |
Proper motion error in Dec from the PPMXL catalogues (mas yr$^{-1}$) |

71 |
pmra_ppmxl_corr |
Proper motion $mu_alphacosdelta$ in RA from the PPMXL catalogues after corrected for systematics using the formula of Carlin et al. (2013) (mas yr$^{-1}$) |

72 |
pmdec_ppmxl_corr |
Proper motion $mu_delta$ in Dec from the PPMXL catalogues after corrected for systematics using the formula of Carlin et al. (2013) (mas yr$^{-1}$) |

73 |
pmra_ucac4 |
Proper motion $mu_alphacosdelta$ in RA from the UCAC4 catalogues (mas yr$^{-1}$) |

74 |
pmdec_ucac4 |
Proper motion $mu_delta$ in Dec from the UCAC4 catalogues (mas yr$^{-1}$) |

75 |
epmra_ucac4 |
Proper motion error in RA from the UCAC4 catalogues (mas yr$^{-1}$) |

76 |
epmdec_ucac4 |
Proper motion error in Dec from the UCAC4 catalogues (mas yr$^{-1}$) |

77 |
pmra_ucac4_corr |
Proper motion $mu_alphacosdelta$ in RA from the UCAC4 catalogues after corrected for systematics using the formula of Huang et al. (2014) (mas yr$^{-1}$) |

78 |
pmdec_ucac4_corr |
Proper motion in $mu_delta$ in Dec from the UCAC4 catalogues after corrected for systematics using the formula of Huang et al. (2014) (mas yr$^{-1}$) |

79 |
pmra_xuyi2mass |
Proper motion $mu_alphacosdelta$ in RA derived by comparing the XSTPS-GAC and 2MASS positions (mas yr$^{-1}$) |

80 |
pmdec_xuyi2mass |
Proper motion $mu_delta$ in Dec derived by comparing the XSTPS-GAC and 2MASS positions (mas yr$^{-1}$) |

81 |
x |
x coordinate in a Galactocentric Cartesian reference system, positive towards the Galactic centre (kpc) |

82 |
y |
y coordinate in a Galactocentric Cartesian reference system, positive in the direction of disc rotation (kpc) |

83 |
z |
z coordinate in a Galactocentric Cartesian reference system, positive towards the North Galactic Pole (kpc) |

84 |
u[2] |
Galactic space velocities in the x direction computed from dist_em and the corrected PPMXL and UCAC4 proper motions, respectively, positive towards the Galactic centre (km s$^{-1}$) |

85 |
v[2] |
Galactic space velocities in the y direction computed from dist_em and the corrected PPMXL and UCAC4 proper motions, respectively, positive in the direction of Galactic rotation (km s$^{-1}$) |

86 |
w[2] |
Galactic space velocities in the z direction computed from dist_em and the corrected PPMXL and UCAC4 proper motions, respectively, positive towards the North Galactic Pole (km s$^{-1}$) |

87 |
v_r[2] |
Galactic space velocities in the $r$ direction in a Galactocentric cylindrical polar coordinate system, computed from dist_em and the corrected PPMXL and UCAC4 proper motions, respectively (km s$^{-1}$) |

88 |
v_phi[2] |
Galactic space velocities in the $phi$ direction in a Galactocentric cylindrical polar coordinate system, computed from dist_em and the corrected PPMXL and UCAC4 proper motions, respectively, positive in the direction of counter disc rotation (km s$^{-1}$) |

89 |
v_z[2] |
Galactic space velocities in the $z$ direction in a Galactocentric cylindrical polar coordinate system, computed from dist_em and the corrected PPMXL and UCAC4 proper motions, respectively, positive towards the North Galactic Pole (km s$^{-1}$) |

90 |
e[2] |
Orbital eccentricities computed from dist_em and the corrected PPMXL and UCAC4 proper motions, respectively |

91 |
Rapo[2] |
Maximum Galactic radii reached by the orbits from dist_em and the corrected PPMXL and UCAC4 proper motions, respectively (kpc) |

92 |
Rperi[2] |
Minimum Galactic radii reached by the orbits from dist_em and the corrected PPMXL and UCAC4 proper motions, respectively (kpc) |

93 |
Rg[2] |
Galactic guiding radii from dist_em and the corrected PPMXL and UCAC4 proper motions, respectively (kpc) |

(a) See Table,2 of Xiang et al. (2015b). http://adsabs.harvard.edu/abs/2015MNRAS.448..822X

(b) See http:g/www.ipac.caltech.edu/2mass/releases/allsky/doc/sec1_6b.html#origphot.

(c) See http:g/wise2.ipac.caltech.edu/docs/release/allsky/expsup/sec2_2a.html#ext_flg.