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=224410
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200012 07 30.9000 "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)
_DEJ2000-04 21 49.900 "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)
_RAB195012 04 57.0026 "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)
_DEB1950-04 05 08.240 "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)
_Glon282.6543515 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+56.7686725 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)
146883recno 146883  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

SeqNum224410  (i) 2dFGRS serial number (SEQNUM) (meta.id)
o_SeqNum1   [1,6] Number of spectra obtained (meta.number)
NameTGN120Z057  (i) 2dFGRS name (NAME) (meta.id;meta.main)
UKST787  UKST plate number (IFIELD) (obs.field)
RAJ200012 07 30.90 "h:m:s" (i) Right ascension (J2000, hours) (pos.eq.ra;meta.main)
DEJ2000-04 21 49.9 "d:m:s" (i) Declination (J2000, degrees) (pos.eq.dec;meta.main)
Bjmag19.393 mag Final bj magnitude (BJG) (Note 1)   (phot.mag;em.opt.B)
Bjsel19.285 mag Final bj magnitude corrected from extinction (BJSEL) (Note G2)   (phot.mag;em.opt.B)
Bjmag.o19.500 mag Original bj magnitude (BJG_OLD) (Note 1)   (phot.mag;em.opt.B)
Bjsel.o19.420 mag Original bj magnitude corrected from extinction (BJSELOLD) (phot.mag;em.opt.B)
Gext 0.108 mag Galactic extinction value (GALEXT) (phys.absorption)
Bjmag.S19.520 mag SuperCosmos bj magnitude (SB_BJ) (Note 1)   (phot.mag;em.opt.B)
Rmag.S18.531 mag SuperCosmos R magnitude (SR_R) (Note 1)   (phot.mag;em.opt.R)
ObsRun98MAY  Observation run of best spectrum (OBSRUN) (obs.param;obs)
z.obs 0.1221   Best redshift (observed) (Z) (Note 2)   (src.redshift;pos.heliocentric)
z 0.1220   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_z1  Redshift type (abs=1, emi=2, man=3) (ABEMMA) (meta.note)
z.abs 0.1221   Cross-correlation redshift (Z_ABS) (Note 2)   (src.redshift;pos.heliocentric)
T5  Cross-correlation template (KBESTR) (Note 2)   (stat.fit.param)
Rx 5.12   Cross-correlation R value (R_CRCOR) (Note 2)   (stat.fit.param)
z.em 0.1216   Emission redshift (Z_EMI) (Note 2)   (src.redshift;pos.heliocentric)
o_z.em1  Number of emission lines for Z_EMI (NMBEST) (Note 2)   (meta.number)
SNR 10.4  Median signal to noise ratio per pixel (Note 2)   (em.wl.central;stat.median)
eta 0.6203   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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