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=180039
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200022 55 57.7000 "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)
_DEJ2000-24 02 50.800 "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)
_RAB195022 53 15.4784 "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)
_DEB1950-24 18 52.475 "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)
_Glon033.1912094 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-63.8380243 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)
120587recno 120587  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

SeqNum180039  (i) 2dFGRS serial number (SEQNUM) (meta.id)
o_SeqNum1   [1,6] Number of spectra obtained (meta.number)
NameTGS068Z069  (i) 2dFGRS name (NAME) (meta.id;meta.main)
UKST534  UKST plate number (IFIELD) (obs.field)
RAJ200022 55 57.70 "h:m:s" (i) Right ascension (J2000, hours) (pos.eq.ra;meta.main)
DEJ2000-24 02 50.8 "d:m:s" (i) Declination (J2000, degrees) (pos.eq.dec;meta.main)
Bjmag16.264 mag Final bj magnitude (BJG) (Note 1)   (phot.mag;em.opt.B)
Bjsel16.145 mag Final bj magnitude corrected from extinction (BJSEL) (Note G2)   (phot.mag;em.opt.B)
Bjmag.o16.380 mag Original bj magnitude (BJG_OLD) (Note 1)   (phot.mag;em.opt.B)
Bjsel.o16.300 mag Original bj magnitude corrected from extinction (BJSELOLD) (phot.mag;em.opt.B)
Gext 0.119 mag Galactic extinction value (GALEXT) (phys.absorption)
Bjmag.S16.370 mag SuperCosmos bj magnitude (SB_BJ) (Note 1)   (phot.mag;em.opt.B)
Rmag.S15.530 mag SuperCosmos R magnitude (SR_R) (Note 1)   (phot.mag;em.opt.R)
ObsRun01SEP  Observation run of best spectrum (OBSRUN) (obs.param;obs)
z.obs 0.0790   Best redshift (observed) (Z) (Note 2)   (src.redshift;pos.heliocentric)
z 0.0789   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 0.0790   Cross-correlation redshift (Z_ABS) (Note 2)   (src.redshift;pos.heliocentric)
T4  Cross-correlation template (KBESTR) (Note 2)   (stat.fit.param)
Rx 3.74   Cross-correlation R value (R_CRCOR) (Note 2)   (stat.fit.param)
z.em 0.2041   Emission redshift (Z_EMI) (Note 2)   (src.redshift;pos.heliocentric)
o_z.em2  Number of emission lines for Z_EMI (NMBEST) (Note 2)   (meta.number)
SNR 10.9  Median signal to noise ratio per pixel (Note 2)   (em.wl.central;stat.median)
eta -0.1808   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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