VizieR

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VizieR

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J/MNRAS/474/5008/spidxcat Radio spectral index 147-1400MHz (de Gasperin+, 2018)
*Spectral index catalogue (1396515 rows)
  recno=762972
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ColumnValue  Explain   (UCD)
_RAJ200021 29 52.33071168 "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+50 54 20.0194524 "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)
_RAB195021 28 08.67153959 "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+50 41 07.8520453 "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)
_Glon093.86507458371 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-00.22412048538 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)
762972recno 762972  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RAJ2000322.468044632 deg (i) Right Ascension (J2000) (weighted average of NVSS and TGSS detections for Scode=SMCI) (pos.eq.ra;meta.main)
DEJ2000+50.905560959 deg (i) Declination (J2000) (weighted average (pos.eq.dec;meta.main)
FtotNVSS  Jy NVSS 1.4GHz total flux (sum of detections fluxes for Scode=I, set to 0 for Scode=U) (phot.flux.density;em.radio.750-1500MHz)
e_FtotNVSS 0.001 Jy rms uncertainty on FtotNVSS (quadratic mean of detection errors for Scode=I, set to 0 for Scode=U) (stat.error)
FpeakNVSS  Jy/beam NVSS 1.4GHz peak flux (maximum of detections peak fluxes for Scode=I, set to 0 for Scode=U) (phot.flux.density;em.radio.750-1500MHz)
e_FpeakNVSS 0.001 Jy/beam rms uncertainty on FpeakNVSS (error relative to the maximum of detections peak fluxes for Scode=I, set to 0 for Scode=U) (stat.error)
rmsNVSS 0.000593 Jy/beam NVSS local rms noise (instr.det.noise)
FtotTGSS  Jy TGSS 147MHz total flux (sum of detections fluxes for Scode=I, set to 0 for Scode=L) (phot.flux.density;em.radio.100-200MHz)
e_FtotTGSS  Jy rms uncertainty on FtotTGSS (quadratic mean of detections error for Scode=I, set to 0 for Scode=L) (stat.error)
FpeakTGSS  Jy/beam TGSS 147MHz peak flux (maximum of detections peak fluxes for Scode=I, set to 0 for Scode=L) (phot.flux.density;em.radio.100-200MHz)
e_FpeakTGSS  Jy/beam rms uncertainty on FpeakTGSS (error relative to the maximum of detections peak fluxes for Scode=I, set to 0 for Scode=L) (stat.error)
rmsTGSS 0.014080 Jy/beam Local rms noise (instr.det.noise)
SpIndex-0.951802  Spectral index between 147MHz and 1.4GHz (spect.index;em.radio.100-200MHz)
e_SpIndex 0.000000  Spectral index error (set to 0 for Scode=LU) (stat.error)
s2n 5.48  Peak flux over Island rms (phot.flux;arith.ratio)
ScodeL   [SMCILU] Source code (Note 1)   (meta.code)
Nmatch0  Number of matched sources in the same island (meta.number)
NunmaNVSS 1  Number of NVSS unmatched sources in the same island (meta.number)
NunmaTGSS0  Number of TGSS unmatched sources in the same island (meta.number)
IslId 251820   [30/1855370] Island identification number (meta.id)
SourceId 762971   [0/1396514] Unique source identification number (meta.id;meta.main)
  
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