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VizieR

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J/ApJ/861/49/table2 ALFALFA extragalactic HI source catalog (Haynes+, 2018)
ALFALFA extragalactic HI source catalog; corrected version (August 2019)
spectrum/fits
spectrum
(31502 rows)
  recno=21713
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200013 56 11.000 "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+05 00 39.00 "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)
_RAB195013 53 40.111 "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+05 15 17.61 "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)
_Glon340.693582 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+63.033273 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)
21713recno 21713  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

AGC008853   [1/749512] UGC/AGC number (Note 1)   (meta.id;meta.main)
NameN5364  Common name of the optical counterpart (meta.id)
RAJ200013 56 11.0 "h:m:s" (i) [0/23] HI centroid hour of RA (J2000) (pos.eq.ra;meta.main)
DEJ2000+05 00 39 "d:m:s" (i) HI centroid degree of Dec (J2000) (pos.eq.dec;meta.main)
RAO13 56 12.0 "h:m:s" Optical counterpart hour of RA (J2000) (meta.id.assoc;pos.eq.ra)
DEO+05 00 52 "d:m:s" Optical counterpart degree of Dec (J2000) (meta.id.assoc;pos.eq.dec)
Vhel 1240 km/s [-430/17823] Heliocentric velocity of the HI profile midpoint (spect.dopplerVeloc;em.line.HI)
W50275 km/s [9/885] Observed velocity width at 50% of peak on either side (spect.line.width)
e_W50 2 km/s [1/296] Uncertainty in W50 (stat.error)
W20297 km/s [0/896] Observed velocity width at 20% of peak on either side (spect.line.width)
HIflux 52.35 Jy.km/s [-7.7/999.9] HI line flux density (phot.flux)
e_HIflux 0.12 Jy.km/s [0.02/1.2] Uncertainty in HIflux (stat.error)
SNR255.1   [1.2/964] Ratio of peak flux to rms noise (instr.det.noise)
rms 2.76 mJy [1.2/18] The RMS noise in the extracted spectrum at 10 km/s resolution (instr.det.noise)
Dist 22.2 Mpc [0.3/259.6] Adopted distance, where applicable (pos.distance;pos.heliocentric)
e_Dist 4.4 Mpc [0/31] Uncertainty in Dist (stat.error)
logMHI 9.78 [Msun] [3.7/11] log HI mass where distance has been adopted (phys.mass)
e_logMHI 0.18 [Msun] [0.04/1.2] Uncertainty in logMHI (stat.error)
HI1   [1/2] HI source code (Note 2)   (meta.code)

spclick to plot  Interactive plot of the spectrum (meta.ref.url)
fitsA008853.fits  Download the spectrum FITS file (meta.ref.url)
SimbadSimbad  ask the Simbad data-base about this object (meta.ref.url)
NEDNED  ask the NED data-base about this object (meta.ref.url)
LEDALEDA  ask the LEDA data-base about this object (meta.ref.url)
  
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