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J/MNRAS/498/883
  Neutral hydrogen evolution over the past 11Gyr (Grasha+, 2020)
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2020MNRAS.498..883G
Similar Catalogs
Post annotation 		img(gal)
1.J/MNRAS/498/883/table1(c)Journal of Observations (261 rows)
2.J/MNRAS/498/883/table2Sources with HI 21cm absorption (29 rows)
3.J/MNRAS/498/883/table3Properties of the HI 21cm and OH 18cm Line Observations (16 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  (1)More (char) Link to Tables 2 and 3 (meta.ref.url)
   (ALL)Name (char) (i) Source name (meta.id;meta.main)
   (ALL)f_Name (char) [abc] Flag on Name (Note 1)   (meta.code)
  (1)RAJ2000 "h:m:s" (i) Right ascension (J2000) (pos.eq.ra;meta.main)
  (1)DEJ2000 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  (1+2)z  Optical redshift of the background radio object (src.redshift)
  (1+2)e_z  (n) Error on z (stat.error;src.redshift)
  (1)T1.4 s Total integration time spent on the reduced spectrum for the 1.4GHz bandpass (Note 2)   (time.expo)
  (1)rms1.4 mJy (n) Average measured spectral noise level for the 1.4GHz bandpass (Note 2)   (instr.det.noise;stat.mean)
  (1)f_rms1.4 (char) [*] Flag on rms1.4 (Note 3)   (meta.code)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)S1.4 Jy (n) Flux limit measured as closely to 1420 MHz (Note 2)   (phot.flux.density;em.radio.750-1500MHz)
  (1)l_NHI1.4 (char) Limit flag on NHI1.4 (meta.code.error)
  (1)NHI1.4 10+18/cm2(n) Column density limit measured as closely to 1420 MHz (Note 2)   (phys.columnDensity)
  (1)T1.0 s Total integration time spent on the reduced spectrum for the 1.0GHz bandpass (Note 4)   (time.expo)
  (1)rms1.0 mJy (n) Average measured spectral noise level for the 1.0GHz bandpass (Note 4)   (instr.det.noise;stat.mean)
  (1)f_rms1.0 (char) [*] Flag on rms1.0 (Note 3)   (meta.code)
  (1)S1.0 Jy (n) Flux limit measured as closely to 1000 MHz (Note 4)   (phot.flux.density;em.radio.750-1500MHz)
  (1)l_NHI1.0 (char) Limit flag on NHI1.0 (meta.code.error)
  (1)NHI1.0 10+18/cm2(n) Column density limit measured as closely to 1000MHz (Note 4)   (phys.columnDensity)
  (1)T800 s Total integration time spent on the reduced spectrum for the 800MHz bandpass (Note 5)   (time.expo)
  (1)rms800 mJy (n) Average measured spectral noise level for the 800MHz bandpass (Note 5)   (instr.det.noise;stat.mean)
  (1)f_rms800 (char) [*] Flag on rms800 (Note 3)   (meta.code)
  (1)S800 Jy (n) Flux limit measured as closely to 800 MHz (Note 5)   (phot.flux.density;em.radio.750-1500MHz)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)e_S800 Jy (n) Error on S800 (stat.error)
  (1)l_NHI800 (char) Limit flag on NHI800 (meta.code.error)
  (1)NHI800 10+18/cm2(n) Column density limit measured as closely to 800MHz (Note 5)   (phys.columnDensity)
  (1)T450 s Total integration time spent on the reduced spectrum for the 450MHz bandpass (Note 6)   (time.expo)
  (1)rms450 mJy (n) Average measured spectral noise level for the 450MHz bandpass (Note 6)   (instr.det.noise;stat.mean)
  (1)f_rms450 (char) [*] Flag on rms450 (Note 3)   (meta.code)
  (1)S450 Jy (n) Flux limit measured as closely to 450MHz (Note 6)   (phot.flux.density;em.radio.400-750MHz)
  (1)l_NHI450 (char) Limit flag on NHI450 (meta.code.error)
  (1)NHI450 10+18/cm2(n) Column density limit measured as closely to 450MHz (Note 6)   (phys.columnDensity)
  (1)Dztot  (n) Total redshift searched per source in all the receivers (src.redshift;pos.heliocentric)
  (1)f_Dztot (char) [*] Flag on Dztot (Note 3)   (meta.code)
  (1)SimbadName (char) (n)Designation understandable by the Simbad data-base (meta.id)
  (2)Comp (char) Numbered Gaussian component (meta.code.multip)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)nu MHz Central frequency of each component (em.freq)
  (2)e_nu MHz Error on nu (stat.error)
  (2)Fcont Jy Continuum flux density (phot.flux.density;em.radio)
  (2)e_Fcont Jy Error on Fcont (stat.error)
  (2)FWHM kHz Observed width of the line (spect.line.width)
  (2)e_FWHM kHz Error on FWHM (stat.error;phys.angSize)
  (2)FWHMrf km/s Rest-frame line width (spect.line.width)
  (2)e_FWHMrf km/s Error on FWHMrf (stat.error)
  (2)Depth mJy Depth of the absorption line (phys.absorption.opticalDepth;spect.line)
  (2)e_Depth mJy Error on Depth (stat.error;phys.absorption.opticalDepth)
  (2)tau 10-2 Peak optical depth (phys.absorption.opticalDepth;stat.max)
  (2)e_tau 10-2 Error on tau (stat.error)
  (2+3)NHI 10+18/cm2/KDerived HI column density NHI/ (Ts/f) (phys.columnDensity)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (2+3)e_NHI 10+18/cm2/KError on NHI (stat.error)
  (2)NHIlit 10+18/cm2/K(n) Measured HI column density NHI/(Ts/f) from previous 21 cm observations (phys.columnDensity)
  (2)e_NHIlit 10+18/cm2/K(n) Error on NHIlit (stat.error)
  (2)r_NHIlit (char) Reference for NHIlit (Note 2)   (meta.ref;pos.frame)
  (2)Ts/f K (n) Measured Ts/f values constrained from Ly{alpha} and VLA observations from Kanekar et al. (2014MNRAS.438.2131K) (phys.temperature)
  (3)zabs  Redshift of known intervening 21cm absorbers (Note 2)   (src.redshift)
  (3)e_zabs  (n) Error on zabs (stat.error)
  (3)nuHI MHz Observed frequency for the HI 21cm line (em.freq)
  (3)e_nuHI MHz (n) Error on nuHI (stat.error)
  (3)DvHI (char) km/s Velocity range for the HI 21cm line search (spect.dopplerVeloc)
  (3)rmsHI mJy (n) Measured rms noise over the searched region for the HI 21cm line (instr.det.noise)
  (3)f_rmsHI (char) [*] Flag on rmsHI (Note 3)   (meta.code)
  (3)contHI Jy (n) Continuum flux density for the HI 21cm line (phot.flux.density;em.radio)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)e_contHI Jy (n) Error on contHI (stat.error)
  (3)l_NHI (char) Limit flag on NHI (meta.code.error)
  (3)nuOH1612 MHz Observed frequency for the OH 1612MHz line (em.freq)
  (3)DvOH1612 (char) km/s Velocity range for the OH 1612MHz line search (spect.dopplerVeloc)
  (3)rmsOH1612 mJy (n) Measured rms noise over the searched region for the OH 1612MHz line (stat.stdev;instr.det.noise;obs.field)
  (3)f_rmsOH1612 (char) [*] Flag on rmsOH1612 (Note 3)   (meta.code)
  (3)nuOH1667 MHz Observed frequency for the OH 1667MHz line (em.freq)
  (3)DvOH1667 (char) km/s Velocity range for the OH 1667MHz line search (spect.dopplerVeloc)
  (3)rmsOH1667 mJy (n) Measured rms noise over the searched region for the OH 1667MHz line (stat.stdev;instr.det.noise;obs.field)
  (3)f_rmsOH1667 (char) [*] Flag on rmsOH1612 (Note 3)   (meta.code)
  (3)nuOH1720 MHz Observed frequency for the OH 1720MHz line (em.freq)
  (3)DvOH1720 (char) km/s Velocity range for the OH 1720MHz line search (spect.dopplerVeloc)
  (3)rmsOH1720 mJy (n) Measured rms noise over the searched region for the OH 1720MHz line (stat.stdev;instr.det.noise;obs.field)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)f_rmsOH1720 (char) [*] Flag on rmsOH1612 (Note 3)   (meta.code)
  (3)contOH Jy (n) OH continuum flux density (Note 4)   (phot.flux.density;em.radio)
  (3)e_contOH Jy (n) Error on contOH (stat.error)
  (3)l_NOH (char) Limit flag on NOH (meta.code.error)
  (3)NOH 10+13/cm2/K(n) Derived 3{sigma} upper limit to the HI column density (Note 4)   (phys.columnDensity)
  (3)e_NOH 10+13/cm2/K(n) Error on NOH (stat.error)
  (3)f_NOH (char) [c] Flag on NOH (Note 5)   (meta.code)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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