VizieR

CfA VizieR . ADAC VizieR . CADC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . Beijing (Ch) VizieR .

VizieR

start AladinLite
I/325/icrf-u2 Radio-optical reference frame link (Zacharias+ 2013)
Results from UCAC2-type reductions of ICRF optical counterparts (sample in table 4 of paper) (666 rows)
  recno=31
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200001 21 56.861800 "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 22 24.72600 "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 19 21.389738 "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 06 44.09426 "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)
_Glon137.250597516 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-57.647543677 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)
31recno 31  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RAJ200001 21 56.8618 "h:m:s" (i) Right Ascension ICRS (pos.eq.ra;meta.main)
DEJ2000+04 22 24.726 "d:m:s" (i) Declination ICRS (pos.eq.dec;meta.main)
Dist 8.1 mas [0/1821] Distance between the optical and radio positions (pos.angDistance)
dRA* 1.3 mas Distance(optical-radio) in RA*cos(Dec) (pos.eq.ra;arith.diff)
dDec -8.0 mas Distance(optical-radio) in Dec (pos.eq.dec)
eRA 57 mas [4/250] total, formal error of optical position (RA*cos(Dec)) (stat.error;spect.dopplerVeloc.opt;em.opt)
eDE 57 mas [4/250] total, formal error of optical position (Dec) (stat.error;spect.dopplerVeloc.opt;em.opt)
sRA 0.0  ratio dRA*/eRA (position difference in RA in σs) (stat.fit.goodness)
sDE -0.1  ratio dDE/eDE (position difference in Dec in σs) (stat.fit.goodness)
eRad 0.0 mas error of radio position (per coordinate) (stat.error;spect.dopplerVeloc.radio;em.radio)
Nccd 3  number of deep CCD exposures used (meta.number)
Nr* 22  average number of reference stars per deep exposure used (meta.number)
Nrx 0  average number of reference stars excluded (meta.number)
err18.2  mean "plate" solution error of individual deep CCD exposures (stat.error)
S/N 7   [1/1639] Approximate signal/noise ratio of target on individual deep CCD (stat.snr;instr.det)
mag19.50 mag Optical brightness from LQAC-2 (J/A+A/537/A99) (phot.mag;em.opt)
z 0.637   [0/5] Redshift from LQAC-2 (J/A+A/537/A99) (src.redshift)
T3   [0/3] Object type: 0=unknown, 1=AGN, 2=BL-Lac, 3=QSO (from Veron's 13th ed. (VII/258) (src.class)
S 2.90   [0.8/7.2] Radio X-band (8-12GHz) structure index from Bordeaux database: 1=very good, 2=good, 3=use with caution, 4=unacceptable (meta.code.qual)
U2   [2/4] UCAC-type reductions (2 or 4) (meta.id;meta.dataset)
Rname0119+041  B1950 coordinate based name of target (meta.id;meta.main)

R 2  Number of results for this source with UCAC2- and UCAC4-type reductions (meta.number)

Runz   [abo-zJ] Code of deep CCD observing run (Note 1)   (meta.code;instr.det)
n_Runr   [rc] Type of target: r=regular target, c=also used as calibration field (meta.note)
Qg   [ufplgn] Quality letter of optical image (Note 2)   (meta.code.qual;spect.dopplerVeloc.opt;em.opt)

M 2  Existence in Vérons' catalogue (VII/258) and/or LQAC-2 (J/A+A/537/A99) within 3arcsec (meta.ref.url)

Notes   Remarks; if a double the separation (pixel) and flux ratio (source/companion) is given (meta.number)

SimbadNameQSO B0119+041  Designation understandable by the Simbad data-base (meta.id)
  
elapse time 0

Thanks for acknowledging the VizieR Service
Rules of usage of VizieR data

© Université de Strasbourg/CNRS

    • Contact