V/149 LAMOST DR2 catalogs (Luo+, 2016)
The second data release (DR2) of the LAMOST regular survey.
Luo A.-L., Zhao Y.-H., Zhao G., Deng L.-C., Liu X.-W., Jing Y.-P., Wang G.,
Zhang H.-T., Shi J.-R., Cui X.-Q., Chu Y.-Q., Li G.-P., Bai Z.-R., Wu Y.,
Cai Y., Cao S.-Y., Cao Z.-H., Carlin J.L., Chen H.-Y., Chen J.-J.,
Chen K.-X., Chen L., Chen X.-L., Chen X.-Y., Chen Y., Christlieb N.,
Chu J.-R., Cui C.-Z., Dong Y.-Q., Du B., Fan D.-W., Feng L., Fu J.-N.,
Gao P., Gong X.-F., Gu B.-Z., Guo Y.-X., Han Z.-W., He B.-L., Hou J.-L.,
Hou Y.-H., Hou W., Hu H.-Z., Hu N.-S., Hu Z.-W., Huo Z.-Y., Jia L.,
Jiang F.-H., Jiang X., Jiang Z.-B., Jin G., Kong X., Kong X., Lei Y.-J.,
Li A.-H., Li C.-H., Li G.-W., Li H.-N., Li J., Li Q., Li S., Li S.-S.,
Li X.-N., Li Y., Li Y.-B., Li Y.-P., Liang Y., Lin C.-C., Liu C.,
Liu G.-R., Liu G.-Q., Liu Z.-G., Lu W.-Z., Luo Y., Mao Y.-D., Newberg H.,
Ni J.-J., Qi Z.-X., Qi Y.-J., Shen S.-Y., Shi H.-M., Song J., Song Y.-H.,
Su D.-Q., Su H.-J., Tang Z.-H., Tao Q.-S., Tian Y., Wang D., Wang D.-Q.,
Wang F.-F., Wang G.-M., Wang H., Wang H.-C., Wang J., Wang J.-N.,
Wang J.-L., Wang J.-P., Wang J.-X., Wang L., Wang M.-X., Wang S.-G.,
Wang S.-Q., Wang X., Wang Y.-N., Wang Y., Wang Y.-F., Wang Y.-F., Wei P.,
Wei M.-Z., Wu H., Wu K.-F., Wu X.-B., Wu Y.-Z., Xing X.-Z., Xu L.-Z.,
Xu X.-Q., Xu Y., Yan T.-S., Yang D.-H., Yang H.-F., Yang H.-Q., Yang M.,
Yao Z.-Q., Yu Y., Yuan H., Yuan H.-B., Yuan H.-L., Yuan W.-M., Zhai C.,
Zhang E.-P., Zhang H.-W., Zhang J.-N., Zhang L.-P., Zhang W., Zhang Y.,
Zhang Y.-X., Zhang Z.-C., Zhao M., Zhou F., Zhou X., Zhu J., Zhu Y.-T.,
Zou S.-C., Zuo F.
<Res. Astron Astrophys., in prep. (2016)>
=2016yCat.5149....0L 2016yCat.5149....0L
ADC_Keywords: Surveys ; Spectroscopy ; Photometry
Keywords: techniques: spectroscopic survey - data release - catalog
Abstract:
The Large sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST)
general survey is a spectroscopic survey that will eventually cover
approximately half of the celestial sphere and collect 10 million
spectra of stars, galaxies and QSOs.
Description:
There are a couple of corrections been made in this releasing:
Recalculated all the errors of Teff, Logg, Fe/H and rv in the AFGK
catalog. Refer to the DR2 paper (in preparation) for details.
Compare to the previous internal releasing, some extra spectra has
been added into this version of releasing: STAR from 3,779,597 to
3,843,597, increased 63,923; GALAXY from 37,665 to 47,036, increased
9,371; QSO from 8,633 to 13,262, increased 4,629.
The major contribution to this increasing is that we applied a new
method to reduce the data which previously was abandoned due to lack
of standard stars with high enough S/N. Refer to the paper 'LAMOST
Spectrograph Response Curves: Stability and Application to flux
calibration' (in preparation) for details.
There are also a small amount of increasing is due to the correction
of fiber flag, and to the eye check work, etc.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
dr2.dat 396 4132782 LAMOST DR2 catalog (30/06/2016 version)
stellar2.dat 439 2207189 A, F, G and K type stars catalog
astars2.dat 640 196876 A type stars catalog
mstars2.dat 692 205760 M type stars catalog
dr2_plan.dat 103 1934 Observed plate information catalog
--------------------------------------------------------------------------------
See also:
V/146 : LAMOST DR1 catalogs (Luo+, 2015)
http://dr2.lamost.org : LAMOST DR2 Home Page
Byte-by-byte Description of file: dr2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 I9 --- ObsID [101001/244316245] Observation ID
11- 29 A19 --- Target Target Designation (JHHMMSS.ss+DDMMSS.s)
31- 40 A10 "date" Obs.Date Target Observation Date
42- 46 I5 --- LMJD [55859/56812] Local Modified Julian Day
48- 52 I5 --- MJD [55858/56811] Modified Julian Day
54- 73 A20 --- PlanId Plan Name
75- 76 I02 --- spId [1/16] Spectrograph ID
78- 80 I03 --- FiberId [1/250] Fiber ID
82- 95 F14.10 deg RAdeg Fiber pointing right ascension (J2000)
97-109 F13.10 deg DEdeg Fiber pointing declination (J2000)
111-116 F6.2 --- snru ?=-9999 Signal Noise Ratio of u filter
118-123 F6.2 --- snrg ?=-9999 Signal Noise Ratio of g filter
125-130 F6.2 --- snrr ?=-9999 Signal Noise Ratio of r filter
132-137 F6.2 --- snri ?=-9999 Signal Noise Ratio of i filter
139-144 F6.2 --- snrz ?=-9999 Signal Noise Ratio of z filter
146-155 A10 --- objType Object Type
157-163 A7 --- Class Spectra Type
165-174 A10 --- SubClass Stellar Sub-Class
176-191 F16.10 --- z ?=-9999 Redshift
193-208 F16.10 --- e_z []?=-9999 rms uncertainty on z
210-219 A10 --- magType Target Magnitude Type
221-225 F5.2 --- mag1 ?=99 Magnitude in Band 1 of magType
227-231 F5.2 --- mag2 ?=99 Magnitude in Band 2 of magType
233-237 F5.2 --- mag3 ?=99 Magnitude in Band 3 of magType
239-243 F5.2 --- mag4 ?=99 Magnitude in Band 4 of magType
245-249 F5.2 --- mag5 ?=99 Magnitude in Band 5 of magType
251-255 F5.2 --- mag6 ?=99 Magnitude in Band 6 of magType
257-261 F5.2 --- mag7 ?=99 Magnitude in Band 7 of magType
263-272 A10 --- tsource Organization or person who submits input
catalog
274-278 A5 --- FiberType Fiber Type of target
(Obj, Sky, F-std, Unused, PosErr, Dead)
280-297 A18 --- tfrom Input catalog submitted by an organization or
a person determined by the tsource
299-358 A60 --- tInfo Target ID from SDSS, UCAC4, PANSTAR and
other catalogue
360 I1 --- n_offset [0/1] Whether there is a fiber offset
during observation
362-367 F6.3 arcsec offset [0/99] If offset is true, it gives the offset
distance from the target's coordinator in
input catalog
369-382 F14.10 --- RA1deg Rigth ascension from input catalog (J2000)
384-396 F13.10 --- DE1deg Declination from input catalog (J2000)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: stellar2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 I9 --- ObsID [101001/244316245] Observation ID
11- 29 A19 --- Target Target Designation (JHHMMSS.ss+DDMMSS.s)
31- 40 A10 "date" ObsDate Target Observation Date
42- 46 I5 d LMJD [55859/56812] Local Modified Julian Day
48- 52 I5 d MJD [55858/56811] Modified Julian Day
54- 73 A20 --- PlanId Plan Name
75- 76 I2 --- spId [1/16] Spectrograph ID
78- 80 I3 --- FiberId [1/250] Fiber ID
82- 95 F14.10 deg RAdeg Fiber pointing right Ascension (J2000)
97-109 F13.10 deg DEdeg Fiber pointing declination (J2000)
111-116 F6.2 --- snru ?=-9999 Signal Noise Ratio of u filter
118-123 F6.2 --- snrg ?=-9999 Signal Noise Ratio of g filter
125-130 F6.2 --- snrr ?=-9999 Signal Noise Ratio of r filter
132-137 F6.2 --- snri ?=-9999 Signal Noise Ratio of i filter
139-144 F6.2 --- snrz ?=-9999 Signal Noise Ratio of z filter
146-155 A10 --- objType Object Type
157-160 A4 --- Class Stellar Class
162-166 A5 --- SubClass Stellar Sub-Class
168-180 F13.10 --- z Redshift
182-193 F12.10 --- e_z rms uncertainty on z
195-204 A10 --- magType Target Magnitude Type
206-210 F5.2 mag mag1 ?=99 Magnitude in band 1 of magType
212-216 F5.2 mag mag2 ?=99 Magnitude in band 2 of magType
218-222 F5.2 mag mag3 ?=99 Magnitude in band 3 of magType
224-228 F5.2 mag mag4 ?=99 Magnitude in band 4 of magType
230-234 F5.2 mag mag5 ?=99 Magnitude in band 5 of magType
236-240 F5.2 mag mag6 ?=99 Magnitude in band 6 of magType
242-246 F5.2 mag mag7 ?=99 Magnitude in band 7 of magType
248-257 A10 --- tsource Organization or person who submits input
catalog
259-263 A5 --- FiberType Fiber Type of target
(Obj, Sky, F-std, Unused, PosErr, Dead)
265-282 A18 --- tfrom Input catalog submitted by an organization
or a person determined by the tsource
284-343 A60 --- tInfo Target ID from SDSS, UCAC4, PANSTAR and
other catalogue
345 I1 --- n_offset [0/1] Whether there is a fiber offset during
observation
347-352 F6.3 arcsec offset If offset is true, it gives the offset
distance from the target's coordinator
in input catalog
354-367 F14.10 deg RA1deg Right ascension from input catalog (J2000)
369-381 F13.10 deg DE1deg Declination from input catalog (J2000)
383-389 F7.2 K Teff Effective temperature
391-397 F7.2 K e_Teff Uncertainty of Effective temperature
399-404 F6.3 [cm/s2] logg Surface gravity
406-410 F5.3 [cm/s2] e_logg Uncertainty of Surface gravity
412-417 F6.3 [-] [Fe/H] Metallicity
419-423 F5.3 [-] e_[Fe/H] Uncertainty of Metallicity
425-431 F7.2 km/s HRV ? Heliocentric Radial Velocity
433-439 F7.2 km/s e_HRV ? Uncertainty of Heliocentric Radial
Velocity
--------------------------------------------------------------------------------
Byte-by-byte Description of file: astars2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 I9 --- ObsID [101013/244316204] Observation ID
11- 29 A19 --- Target Target Designation (JHHMMSS.ss+DDMMSS.s)
31- 40 A10 "date" ObsDate Target Observation Date
42- 46 I5 d LMJD [55859/56812] Local Modified Julian Day
48- 52 I5 d MJD [55858/56811] Modified Julian Day
54- 73 A20 --- PlanId Plan Name
75- 76 I2 --- spId [1/16] Spectrograph ID
78- 80 I3 --- FiberId [1/250] Fiber ID
82- 95 F14.10 deg RAdeg Fiber pointing right Ascension (J2000)
97-109 F13.10 deg DEdeg Fiber pointing declination (J2000)
111-116 F6.2 --- snru ? Signal Noise Ratio of u filter
118-123 F6.2 --- snrg ?=9999 Signal Noise Ratio of g filter
125-130 F6.2 --- snrr ?=9999 Signal Noise Ratio of r filter
132-137 F6.2 --- snri ?=9999 Signal Noise Ratio of i filter
139-144 F6.2 --- snrz ?=9999 Signal Noise Ratio of z filter
146-155 A10 --- objType Object Type
157-160 A4 --- Class Stellar Class
162-166 A5 --- SubClass Stellar Sub-Class
168-183 F16.10 --- z ?=-9999 Redshift
185-200 F16.10 --- e_z []?=-9999 rms uncertainty on z
202-211 A10 --- magType Target Magnitude Type
213-217 F5.2 mag mag1 ?=99 Magnitude in band 1 of magType
219-223 F5.2 mag mag2 ?=99 Magnitude in band 2 of magType
225-229 F5.2 mag mag3 ?=99 Magnitude in band 3 of magType
231-235 F5.2 mag mag4 ?=99 Magnitude in band 4 of magType
237-241 F5.2 mag mag5 ?=99 Magnitude in band 5 of magType
243-247 F5.2 mag mag6 ?=99 Magnitude in band 6 of magType
249-253 F5.2 mag mag7 ?=99 Magnitude in band 7 of magType
255-264 A10 --- tsource Organization or person who submits input
catalog
266-270 A5 --- FiberType Fiber Type of target
(Obj, Sky, F-std, Unused, PosErr, Dead)
272-289 A18 --- tfrom Input catalog submitted by an organization or
a person determined by the tsource
291-350 A60 --- tInfo Target ID from SDSS, UCAC4, PANSTAR and
other catalogue
352 I1 --- n_offset [0/1] Whether there is a fiber offset during
observation
354-358 F5.3 arcsec offset If offset is true, it gives the offset
distance from the target's coordinator in
input catalog
360-373 F14.10 --- RA1deg Right ascension from input catalog (J2000)
375-387 F13.10 --- DE1deg Declination from input catalog (J2000)
389-397 F9.2 0.1nm KP12 ?=-9999 Ca II K line index with band widths
of 12Å
399-407 F9.2 0.1nm KP18 ?=-9999 Ca II K line index with band widths
of 18Å
409-417 F9.2 0.1nm KP6 ?=-9999 Ca II K line index with band widths
of 6Å
419-427 F9.2 0.1nm Hdelta12 ?=-9999 Hdelta Line Index with band widths
of 12Å
429-437 F9.2 0.1nm Hdelta24 ?=-9999 Hdelta Line Index with band widths
of 24Å
439-448 F10.2 0.1nm Hdelta48 ?=-9999 Hdelta Line Index with band widths
of 48Å
450-459 F10.2 0.1nm Hdelta62 ?=-9999 Hdelta Line Index with band widths
of 62Å
461-469 F9.2 0.1nm Hgamma12 ?=-9999 Hgamma Line Index with band widths
of 12Å
471-479 F9.2 0.1nm Hgamma24 ?=-9999 Hgamma Line Index with band widths
of 24Å
481-489 F9.2 0.1nm Hgamma48 ?=-9999 Hgamma Line Index with band widths
of 48Å
491-499 F9.2 0.1nm Hgamma54 ?=-9999 Hgamma Line Index with band widths
of 54Å
501-509 F9.2 0.1nm Hbeta12 ?=-9999 Hbeta Line Index with band widths
of 12Å
511-519 F9.2 0.1nm Hbeta24 ?=-9999 Hbeta Line Index with band widths
of 24Å
521-529 F9.2 0.1nm Hbeta48 ?=-9999 Hbeta Line Index with band widths
of 48Å
531-539 F9.2 0.1nm Hbeta60 ?=-9999 Hbeta Line Index with band widths
of 60Å
541-548 F8.2 0.1nm Halpha12 ?=-9999 Halpha Line Index with band widths
of 12Å
550-557 F8.2 0.1nm Halpha24 ?=-9999 Halpha Line Index with band widths
of 24Å
559-566 F8.2 0.1nm Halpha48 ?=-9999 Halpha Line Index with band widths
of 48Å
568-575 F8.2 0.1nm Halpha70 ?=-9999 Halpha Line Index with band widths
of 70Å
577-585 F9.2 0.1nm Pa13 ?=-9999 Paschen line index from local
continuum at 8467.5 with band widths
of 13.0Å
587-594 F8.2 0.1nm Pa142 ?=-9999 Paschen line index from local
continuum at 8598.0 with band widths
of 42.0Å
596-604 F9.2 0.1nm Pa242 ?=-9999 Paschen line index from local
continuum at 8751.0 with band widths
of 42.0Å
606-613 F8.2 0.1nm HaD0.2 ?=-9999 Width at 20% below the local continuum
of Halpha line
615-622 F8.2 0.1nm HbD0.2 ?=-9999 Width at 20% below the local continuum
of beta line
624-631 F8.2 0.1nm HgD0.2 ?=-9999 Width at 20% below the local continuum
of Hgamma line
633-640 F8.2 0.1nm HdD0.2 ?=-9999 Width at 20% below the local continuum
of Hdelta line
--------------------------------------------------------------------------------
Byte-by-byte Description of file: mstars2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 I9 --- ObsID [101007/244316054] Observation ID
11- 29 A19 --- Target Target Designation (JHHMMSS.ss+DDMMSS.s)
31- 40 A10 "date" ObsDate Target Observation Date
42- 46 I5 d LMJD [55859/56812] Local Modified Julian Day
48- 52 I5 d MJD [55858/56811] Modified Julian Day
54- 73 A20 --- PlanId Plan Name
75- 76 I2 --- spId [1/16] Spectrograph ID
78- 80 I3 --- FiberId [1/250] Fiber ID
82- 95 F14.10 deg RAdeg Fiber pointing right Ascension (J2000)
97-109 F13.10 deg DEdeg Fiber pointing declination (J2000)
111-115 F5.2 --- snru ? Signal Noise Ratio of u filter
117-122 F6.2 --- snrg ? Signal Noise Ratio of g filter
124-129 F6.2 --- snrr ? Signal Noise Ratio of r filter
131-136 F6.2 --- snri ? Signal Noise Ratio of i filter
138-143 F6.2 --- snrz ? Signal Noise Ratio of z filter
145-154 A10 --- objType Object Type
156-159 A4 --- Class Stellar Class
161-162 A2 --- SubClass Stellar Sub-Class
164-179 F16.10 --- z ?=-9999 Redshift
181-196 F16.10 --- e_z []?=-9999 rms uncertainty on z
198-207 A10 --- magType Target Magnitude Type
209-213 F5.2 mag mag1 ?=99 Magnitude in band 1 of magType
215-219 F5.2 mag mag2 ?=99 Magnitude in band 2 of magType
221-225 F5.2 mag mag3 ?=99 Magnitude in band 3 of magType
227-231 F5.2 mag mag4 ?=99 Magnitude in band 4 of magType
233-237 F5.2 mag mag5 ?=99 Magnitude in band 5 of magType
239-243 F5.2 mag mag6 ?=99 Magnitude in band 6 of magType
245-249 F5.2 mag mag7 ?=99 Magnitude in band 7 of magType
251-260 A10 --- tsource Organization or person who submits
input catalog
262-266 A5 --- FiberType Fiber Type of target
(Obj, Sky, F-std, Unused, PosErr, Dead)
268-285 A18 --- tfrom Input catalog submitted by an organization or
a person determined by the tsource
287-346 A60 --- tInfo Target ID from SDSS, UCAC4, PANSTAR and
other catalogue
348 I1 --- n_offset [0/1] Whether there is a fiber offset during
observation
350-355 F6.3 arcsec offset If offset is true, it gives the offset
distance from the target's coordinator
in input catalog
357-370 F14.10 --- RA1deg Right ascension from input catalog (J2000)
372-384 F13.10 --- DE1deg Declination from input catalog (J2000)
386-397 F12.6 0.1nm EWHa ?=-9999 Halpha equivalent width
399-410 F12.6 0.1nm e_EWHa ?=-9999 rms uncertainty on EWHa
412-423 F12.6 --- TiO5 ?=-9999 Spectral index of TiO5
425-436 F12.6 --- CaH2 ?=-9999 Spectral index of CaH2
438-449 F12.6 --- CaH3 ?=-9999 Spectral index of CaH3
451-462 F12.6 --- TiO1 ?=-9999 Spectral index of TiO1
464-475 F12.6 --- TiO2 ?=-9999 Spectral index of TiO2
477-488 F12.6 --- TiO3 ?=-9999 Spectral index of TiO3
490-501 F12.6 --- TiO4 ?=-9999 Spectral index of TiO4
503-514 F12.6 --- CaH1 ?=-9999 Spectral index of CaH1
516-527 F12.6 --- CaOH ?=-9999 Spectral index of CaOH
529-540 F12.6 --- e_TiO5 ?=-9999 rms uncertainty on TiO5
542-553 F12.6 --- e_CaH2 ?=-9999 rms uncertainty on CaH2
555-566 F12.6 --- e_CaH3 ?=-9999 rms uncertainty on CaH3
568-579 F12.6 --- e_TiO1 ?=-9999 rms uncertainty on TiO1
581-592 F12.6 --- e_TiO2 ?=-9999 rms uncertainty on TiO2
594-605 F12.6 --- e_TiO3 ?=-9999 rms uncertainty on TiO3
607-618 F12.6 --- e_TiO4 ?=-9999 rms uncertainty on TiO4
620-631 F12.6 --- e_CaH1 ?=-9999 rms uncertainty on CAH1
633-644 F12.6 --- e_CaOH ?=-9999 rms uncertainty on CaOH
646-657 F12.6 --- zeta ?=-9999 Metallicity sensitive parameter
659-670 F12.6 --- e_zeta ?=-9999 rms uncertainty on zeta
672-679 F8.2 --- MA ?=-9999 Magnetic activity
681-692 F12.6 0.1nm NA ?=-9999 Line index of Na Line
--------------------------------------------------------------------------------
Byte-by-byte Description of file: dr2_plan.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- PlateId Plate ID
6- 15 A10 "date" ObsDate Target Observation Date
17- 36 A20 --- PlanId Plan Name
38- 48 F11.7 deg RA1deg Right Ascension of center star (J2000)
50- 59 F10.7 deg DE1deg Declination of center star (J2000)
61- 64 F4.2 mag mag1 Magnitude of the first exposure
66- 69 F4.2 --- Seeing Seeing of the first exposure
71- 94 A24 s ExpTime The total exposure time of n time exposures
96-103 I8 min MJM Modified Julian Minute at the start
time of each plate
--------------------------------------------------------------------------------
History: Copied at ftp://http://dr2.lamost.org/sas/catalog
(End) Patricia Vannier [CDS] 29-Nov-2016