VizieR

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VizieR

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VII/250/2dfgrs The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS Team, 1998-2003)
Best observations of 2dFGRS (low-quality redshifts are written in red) (245591 rows)
  SeqNum=189668
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200023 26 12.7700 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000-25 44 23.600 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195023 23 34.0490 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950-26 00 54.065 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon032.2589854 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-70.8936854 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
125828recno 125828  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

SeqNum189668  (i) 2dFGRS serial number (SEQNUM) (meta.id)
o_SeqNum1   [1,6] Number of spectra obtained (meta.number)
NameTGS128Z156  (i) 2dFGRS name (NAME) (meta.id;meta.main)
UKST536  UKST plate number (IFIELD) (obs.field)
RAJ200023 26 12.77 "h:m:s" (i) Right ascension (J2000, hours) (pos.eq.ra;meta.main)
DEJ2000-25 44 23.6 "d:m:s" (i) Declination (J2000, degrees) (pos.eq.dec;meta.main)
Bjmag18.701 mag Final bj magnitude (BJG) (Note 1)   (phot.mag;em.opt.B)
Bjsel18.614 mag Final bj magnitude corrected from extinction (BJSEL) (Note G2)   (phot.mag;em.opt.B)
Bjmag.o18.850 mag Original bj magnitude (BJG_OLD) (Note 1)   (phot.mag;em.opt.B)
Bjsel.o18.800 mag Original bj magnitude corrected from extinction (BJSELOLD) (phot.mag;em.opt.B)
Gext 0.087 mag Galactic extinction value (GALEXT) (phys.absorption)
Bjmag.S18.709 mag SuperCosmos bj magnitude (SB_BJ) (Note 1)   (phot.mag;em.opt.B)
Rmag.S17.739 mag SuperCosmos R magnitude (SR_R) (Note 1)   (phot.mag;em.opt.R)
ObsRun01MAY  Observation run of best spectrum (OBSRUN) (obs.param;obs)
z.obs 0.0512   Best redshift (observed) (Z) (Note 2)   (src.redshift;pos.heliocentric)
z 0.0513   Best redshift (heliocentric) (Z_HELIO) (Note 2)   (src.redshift)
q_z4   [1,5] Redshift quality for best spectrum (reliable redshifts have quality≥3) (Note 2)   (meta.code.qual;src.redshift)
n_z2  Redshift type (abs=1, emi=2, man=3) (ABEMMA) (meta.note)
z.abs 0.0513   Cross-correlation redshift (Z_ABS) (Note 2)   (src.redshift;pos.heliocentric)
T4  Cross-correlation template (KBESTR) (Note 2)   (stat.fit.param)
Rx 3.32   Cross-correlation R value (R_CRCOR) (Note 2)   (stat.fit.param)
z.em 0.0512   Emission redshift (Z_EMI) (Note 2)   (src.redshift;pos.heliocentric)
o_z.em3  Number of emission lines for Z_EMI (NMBEST) (Note 2)   (meta.number)
SNR 7.6  Median signal to noise ratio per pixel (Note 2)   (em.wl.central;stat.median)
eta 4.6682   Eta spectral type parameter from best spectrum (ETA_TYPE) (Note G1)   (stat.fit.param)

SpSp  Show the Image and annotated Spectrum of this 2dF Object (meta.ref.url)
  
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