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VizieR

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J/A+A/542/A108/tablea1 Giant molecular clouds in M33 (Gratier+, 2012)
Clouds detected in CO (337 rows)
  recno=39
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ColumnValue  Explain   (UCD)
_RAJ200001 33 38.6751 "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+30 32 24.755 "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 30 49.5549 "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+30 17 02.921 "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)
_Glon133.5866820 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-31.4568171 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)
39recno 39  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

GMC 39   [1/337] Giant Molecular Cloud sequential number (meta.record)
PSNR14.6  Peak signal-to-noise ratio (stat.snr;stat.max)
oRA-158 arcsec Offset in right ascension (Note 1)   (pos.eq.ra;arith.diff)
oDE -431 arcsec Offset in declination (Note 1)   (pos.eq.dec;arith.diff)
Rdist 1.9 kpc Deprojected distance from the centre of M33 (pos.distance)
Re 23 pc Effective radius of the cloud (phys.size.radius)
e_Re37 pc rms uncertainty on Re (stat.error)
VCO-122.2 km/s Velocity of the GMC (Note 2)   (spect.dopplerVeloc)
W(CO) 5.8 km/s Linewidth (FWHM) of the GMC (Note 2)   (spect.line.width)
e_W(CO) 0.0 km/s rms uncertainty on W(CO) (stat.error)
W(HI)10.3 km/s FWHM of the HI emission within the sky projected cloud contour (spect.line.width)
e_W(HI) 0.4 km/s rms uncertainty on W(HI) (stat.error)
MH2 1.3e+05 Msun Molecular gas mass (phys.mass)
e_MH2 9.0e+04 Msun rms uncertainty on MH2 (stat.error)
MHI 7.7e+04 Msun Atomic gas mass (phys.mass)
e_MHI 1.5e+04 Msun rms uncertainty on MHI (stat.error)

SimbadSimbad  ask the Simbad data-base about this object (meta.ref.url)
_RA023.41115 deg (i) Position calculated from offsets (right ascension part) (pos.eq.ra;meta.main)
_DE+30.54021 deg (i) Position calculated from offsets (declination part) (pos.eq.dec;meta.main)
  
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