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=023570
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200001 27 56.8300 "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)
_DEJ2000-35 42 59.000 "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)
_RAB195001 25 40.9146 "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)
_DEB1950-35 58 30.222 "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)
_Glon263.0288461 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-78.4179023 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)
12364recno 12364  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

SeqNum023570  (i) 2dFGRS serial number (SEQNUM) (meta.id)
o_SeqNum1   [1,6] Number of spectra obtained (meta.number)
NameTGS623Z103  (i) 2dFGRS name (NAME) (meta.id;meta.main)
UKST353  UKST plate number (IFIELD) (obs.field)
RAJ200001 27 56.83 "h:m:s" (i) Right ascension (J2000, hours) (pos.eq.ra;meta.main)
DEJ2000-35 42 59.0 "d:m:s" (i) Declination (J2000, degrees) (pos.eq.dec;meta.main)
Bjmag14.993 mag Final bj magnitude (BJG) (Note 1)   (phot.mag;em.opt.B)
Bjsel14.919 mag Final bj magnitude corrected from extinction (BJSEL) (Note G2)   (phot.mag;em.opt.B)
Bjmag.o14.770 mag Original bj magnitude (BJG_OLD) (Note 1)   (phot.mag;em.opt.B)
Bjsel.o14.720 mag Original bj magnitude corrected from extinction (BJSELOLD) (phot.mag;em.opt.B)
Gext 0.074 mag Galactic extinction value (GALEXT) (phys.absorption)
Bjmag.S14.025 mag SuperCosmos bj magnitude (SB_BJ) (Note 1)   (phot.mag;em.opt.B)
Rmag.S12.660 mag SuperCosmos R magnitude (SR_R) (Note 1)   (phot.mag;em.opt.R)
ObsRun00SEP  Observation run of best spectrum (OBSRUN) (obs.param;obs)
z.obs 0.0191   Best redshift (observed) (Z) (Note 2)   (src.redshift;pos.heliocentric)
z 0.0191   Best redshift (heliocentric) (Z_HELIO) (Note 2)   (src.redshift)
q_z5   [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 0.0191   Cross-correlation redshift (Z_ABS) (Note 2)   (src.redshift;pos.heliocentric)
T2  Cross-correlation template (KBESTR) (Note 2)   (stat.fit.param)
Rx17.51   Cross-correlation R value (R_CRCOR) (Note 2)   (stat.fit.param)
z.em 0.1746   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 32.8  Median signal to noise ratio per pixel (Note 2)   (em.wl.central;stat.median)
eta -1.7311   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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