VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
J/ApJS/270/33
  MeerKAT Absorption Line Survey (MALS). I. DR1 (Deka+, 2024)
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img(gal)
1.J/ApJS/270/33/catalogThe complete MeerKAT Absorption Line Survey (MALS) DR1 (v2) radio source catalog (735646 rows)

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  IDPtg   [1/782] Pointing sequence number (id_x) (meta.id)
  Pointing (char) MALS pointing ID (JHHMMSS.ss+DDMMSS.s) based on the position (J2000) of the central source in NVSS or SUMSS (pointing_name) (meta.id)
  Date1 "Y:M:D" (n)(i) The date and time (UTC) of the start of L-band observing block (s) (ISO) (obsdatel) (time.start;meta.table)
  Date2 "Y:M:D" (n)Second date and time (UTC) of the start of L-band observing block (s) (ISO) if any (obsdatel_2) 62 A1 — Band Observing band (always "L") (obs_band) (time.start;meta.table)
  FluxCal1 (char) Calibrator used for flux density and bandpass calibration of the data set (fluxcal) (phot.flux.density;em.radio.750-1500MHz)
  FluxCal2 (char) Second calibrator used for flux density and bandpass calibration of the data set if any (fluxcal) (phot.flux.density;em.radio.750-1500MHz)
  FluxSc (char) Flux density scales used for the flux density calibrators (fluxscale) (Note 1)   (phot.flux.density;em.radio.750-1500MHz)
  SPW/WB (char) Whether the continuum image is made using an SPW or the entire wideband (WB) (spw_id) (Note 2)   (spect.line.width)
  Freq MHz [1005.8/1381.2] Reference frequency of the continuum image (ref_freq) (em.freq)
  Majaxis arcsec [7.6/22.2] Major axis of the restoring beam (majrestoringbeam) (phys.angSize;instr.beam)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  Minaxis arcsec [6/11.7] Minor axis of the restoring beam (minrestoringbeam) (phys.angSize;instr.beam)
  PA deg [-86.5/89] Position angle of the restoring beam (parestoringbeam) (pos.posAng;instr.beam)
  sigma1 uJy/beam [15/1312] RMS noise measured from primary beam-uncorrected rms image in an annular ring at primary beam FWHM (sigma_1) (instr.det.noise)
  sigma2 uJy/beam [13/645] RMS noise measured from primary beam-uncorrected rms image in an annular ring at 2 times the primary beam FWHM (sigma_2) (instr.det.noise)
  sigma20 uJy/beam [26/2530] RMS noise at a cumulative fraction of 0.2 of the rms noise distribution of the primary beam-corrected rms image (see Wagenveld+ 2023 for details) (sigma_20) (instr.det.noise)
  ID  (i) [735647/1471292] Identifier (source_id) (meta.id)
  Name (char) (i) MALS name of the source (JHHMMSS.ss+DDMMSS.s) (source_name) (meta.id;meta.main)
  SepPtg arcmin [0.0003/86] Distance of the source from the pointing center (distance_pointing) (pos.angDistance)
  SepNN arcmin [0.1/25] Distance of the source from the nearest neighbor in the field (distance_nn) (pos.angDistance)
  Scode (char) [MS] The PyBDSF code defining the source structure (s_code) (Note 3)   (meta.code)
  Ngauss   [1/96] Number of Gaussian components fitted to the source (n_gauss) (meta.number)
  GaussMax arcsec (n) [0.08/450] Maximum separation between the Gaussian components (NULL for "S"-type sources) (maxsep_gauss) (pos.angDistance)
  MajFWHM arcsec [5/366] FWHM of the major axis of the source (maj) (phys.angSize)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  e_MajFWHM arcsec [0.001/81] 1σ error on MajFWHM (maj_e) (stat.error)
  MinFWHM arcsec [2/144] FWHM of the minor axis of the source (min) (phys.angSize)
  e_MinFWHM arcsec [0.0005/29.3] 1σ error on MinFWHM (min_e) (stat.error)
  MajPA deg [3.6e-5/180] Position angle of the major axis of the source measured east of north (PA) (pos.posAng)
  e_MajPA deg [2.2e-5/180] 1σ error on MajPA (pa_e) (stat.error)
  Maj0FWHM arcsec [0/366] FWHM of the deconvolved major axis of the source (dc_maj) (phys.angSize)
  e_Maj0FWHM arcsec [0.001/81] 1σ error on Maj0FWHM (dcmaje) (stat.error)
  Min0FWHM arcsec [0/143] FWHM of the deconvolved minor axis of the source (dc_min) (phys.angSize)
  e_Min0FWHM arcsec [0.0005/29.3] 1σ error on Min0FWHM (dcmine) (stat.error)
  Maj0PA deg [0/180] Position angle of the deconvolved major axis of the source measured east of north (dc_pa) (pos.posAng)
  e_Maj0PA deg [2.2e-5/180] 1σ error on Maj0PA (dcpae) (stat.error)
  RAJ2000 deg (i) Right ascension (J2000) of the mean intensity-weighted position of all pixels above the island threshold measured if source is fitted with multiple Gaussians (ra_mean) (pos.eq.ra;meta.main)
  e_RAJ2000 deg [5.5e-05/0.007] 1σ error on RAdeg using Equation 1 (rameane) (stat.error;pos.eq.ra)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  DEJ2000 deg (i) [-79/32.2] Declination (J2000) of the mean intensity-weighted position of all pixels above the island threshold measured if source is fitted with multiple Gaussians (dec_mean) (pos.eq.dec;meta.main)
  e_DEJ2000 deg [8.3e-5/0.01] 1σ error on DEdeg using Equation 1 (decmeane) (stat.error;pos.eq.dec)
  RAMdeg deg The R.A. (J2000) of the pixel corresponding to maximum flux density (ra_max) (pos.eq.ra)
  e_RAMdeg deg [5.5e-5/0.007] 1σ error on RAMdeg using Equation 1 (ramaxe) (stat.error)
  DEMdeg deg [-79/32.2] The decl. (J2000) of the pixel corresponding to maximum flux density (dec_max) (pos.eq.dec)
  e_DEMdeg deg [8.3e-5/0.01] 1σ error on DEMdeg using Equation 1 (decmaxe) (stat.error)
  Flux mJy [0.015/17901] Total integrated flux density of the source based on Gaussian component fits, i.e., corrected for primary beam and wideband effects (total_flux) (phot.flux.density;em.radio.750-1500MHz)
  e_Flux mJy [0.009/968] 1σ error on Flux estimated using Equation 2 (totalfluxe) (stat.error;phot.flux)
  ErrFlux   [0.007/549] The fitting error on total flux density to be taken into account to obtain e_Flux (see Section 4.2 and Equation 2) (totalfluxe_fit) (stat.error)
  sErrFlux   [0.006/797] The systematic error to be taken into account to obtain e_Flux (see Section 4.2 and Equation 2) (totalfluxe_sys) (stat.error)
  FluxAlt mJy [0.01/17473] Total integrated flux density of the source based on alternate primary beam model, i.e., plumber (Section 4.3) obtained by multiplying Flux and FluxCorr (totalfluxmeasured) (phot.flux.density;em.radio.750-1500MHz)
  e_FluxAlt mJy [0.009/957] 1σ error on FluxAlt (totalfluxmeasured_e) (stat.error)
  FluxPk mJy/beam [0.03/11876] Peak flux density of the source (peak_flux) (phot.flux.density;em.radio.750-1500MHz)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  e_FluxPk mJy/beam [0.006/46] 1σ error on FluxPk (peakfluxe) (stat.error)
  FluxIsl mJy [-0.03/17981] Total integrated flux density of the island in which the source is located (isltotalflux) (phot.flux.density;em.radio.750-1500MHz)
  e_FluxIsl mJy [0.009/236] 1σ error on FluxIsl (isltotalflux_e) (stat.error)
  rmsIsl mJy/beam [0.009/46] Average background rms noise of the island in which the source is located (isl_rms) (stat.stdev;instr.det.noise;stat.mean)
  Isl mJy/beam [-22/23] Average background mean value of the island in which the source is located (isl_mean) (instr.background;stat.mean)
  ResrmsIsl mJy/beam [0/51] Average residual background rms noise of the island in which the source is located (residislrms) (stat.fit.residual;instr.det.noise;stat.mean)
  ResIsl mJy/beam [-25/35] Average residual background mean value of the island in which the source is located (residislmean) (instr.background;stat.mean)
  FluxCorr   [0.9/1.1] The factor to be multiplied to flux density measurements and errors to obtain the values corresponding to the plumber beam model (see Section 4.3 and Appendix C) (flux_correction) (arith.factor)
  Real (char) Whether a source is a real astrophysical source or an artifact (Always "True") (real_source) (meta.code)
  Res (char) Whether a source is resolved based on the reliability envelope method (see Figure 10) (resolved) (meta.code)
  SpWind (char) Spectral windows used for determining spectral index and curvature using the narrowband multifrequency synthesis (MFS) images (spectralindexspwused) (Note 5)   (meta.note)
  Spwfit  (n) [-50/45] Spectral index and curvature of the source based on Flux from narrowband (i.e., SPW-based) images (spectralindexspwfit) (spect.index)
  e_Spwfit  (n) [0.006/7] 1σ error on Spwfit (spectralindexspwfit_e) (stat.error)
  SpMALS  (n) [-2.6/2] Spectral index and curvature based on Flux from narrowband images from MALS and measurements from the literature (spectralindexmals_lit) (spect.index)
  e_SpMALS  (n) [0.04/0.5] 1σ error on SpMALS (spectralindexmalslite) (stat.error)
  SpIndLit (char) List of external surveys ("TGSS-ADR1", "L:9" or "L:2") used (spectralindexlit) (meta.bib)

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