VizieR

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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/ApJ/835/223
  A catalog of nearby galaxies with Chandra obs. (She+, 2017)
2 annotation(s)
img(gal)
1.J/ApJ/835/223/xgalGeneral and X-ray properties for galaxies in our sample (tables 1 and 2) (719 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)
  Seq  Running sequence number (meta.id)
  Name (char) (i) Object Name (meta.id;meta.main)
  F (char) Display the fitting results for this galaxy (table 4) (meta.ref.url)
  Dist Mpc [0.02/50] Distance from NED (pos.distance;pos.heliocentric)
  RAJ2000 "h:m:s" (i) Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Degree of Declination (J2000) (pos.eq.dec;meta.main)
  Class (char) Nuclear spectral classification (Note 1)   (spect.index)
  HType (char) Hubble Type from NED (meta.note;src.morph.type)
  Sigma km/s (n) [17/414] Central velocity dispersion (Note 2)   (phys.veloc.dispersion)
  e_Sigma km/s (n) [1/41] Error in sigma (stat.error)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  logLHa [10-7W] (n) [34.9/41.6] Log of Halpha luminosity (Note 3)   (phys.luminosity;em.line.Halpha)
  n_logLHa (char) Note(s) on logLHa (Note 4)   (meta.note)
  logMBH [Msun] (n) [2/10] Log of Black Hole mass (Note 5)   (phys.mass)
  b_logMBH [Msun] (n) [1/10] Lower limit of logMBH (phys.mass;stat.min)
  B_logMBH [Msun] (n) [3/11] Upper limit of logMBH (phys.mass;stat.max)
  NH0 10-22/cm2 [0.004/0.8] Galactic absorption column density (phys.columnDensity)
  HCat  (n)Display data from Ho+, 1997, J/ApJS/112/315 and 2009, J/ApJS/183/1, within 10" (meta.ref.url)
  SimbadName (char) Designation understandable by the Simbad data-base (meta.id)
  NED  ask the NED data-base about this object (meta.ref.url)
  ObsID  Chandra Observation identifier (meta.id;obs.param;obs)
  Inst (char) Instrument used in Chandra observation ("ACIS-S", 623 occurrences or "ACIS-I") (instr.setup;obs)
  Exp ks [1/190] Exposure of the observation (obs.param;obs)
  Sep arcsec (n) [0.05/2.7] Offset between X-ray source and galaxy center (pos.angDistance)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  AGN (char) AGN flag: "Y"=yes (314 occurrences) or "N"=No (meta.code.class)
  H0  (n) [-1/1] Hardness ratio H0: (hard-soft-medium)/full (Note 1)   (phot.flux;arith.ratio)
  e_H0  (n) [0.001/0.4] Error of H0 (stat.error)
  H1  (n) [-0.7/0.8] Hardness ratio H1: (medium-soft)/full (Note 1)   (phot.flux;arith.ratio)
  e_H1  (n) Error of H1 (stat.error)
  H2  (n) [-0.6/1] Hardness ratio H2: (hard-medium)/full (Note 1)   (phot.flux;arith.ratio)
  e_H2  (n) Error of H2 (stat.error)
  NH 10+22/cm2(n) [0.3/9.1] Intrinsic absorption inferred from hardness ratio (phys.columnDensity)
  b_NH 10+22/cm2(n) [0.01/8] Lower limit in NH (phys.columnDensity;stat.min)
  B_NH 10+22/cm2(n) [0.01/27] Upper limit in NH (phys.columnDensity;stat.max)
  Flux 10-17W/m2(n) [0.08/17100] Observed flux in 2-10keV (phot.flux;em.X-ray)
  b_Flux 10-17W/m2(n) [0/16800] Lower limit in Flux (phot.flux;stat.min)
  B_Flux 10-17W/m2(n) [0.01/17400] Upper limit in Flux (phot.flux;stat.max)
  logLX [10-7W] (n) [35/44] Log of 2-10keV luminosity; in erg/s (phys.luminosity;em.X-ray)
  b_logLX [10-7W] (n) [35/43] Lower limit in LogLX (phys.luminosity;em.X-ray;stat.min)
  B_logLX [10-7W] (n) [30/43] Upper limit in LogLX (phys.luminosity;em.X-ray;stat.max)
  n_logLX (char) Note on luminosity or references for sources suffering from pileup (Note G1)   (meta.note)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
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Annotations on J/ApJ/835/223
Posted by seb (2019/00/21 16:45:51)
[J/ApJ/835/223]
Hello,
I tried downloading this FITS file and opening it with various tools.
It looks like a potential bug of the FITS viewer tool, and not an error in the data file itself. For example, fv is not interpreting correctly the header information. If you open the same FITS file with TOPCAT, the two column values are correct.

The FITS standard (see p.20) states that "It is strongly recommended that every field of the table be assigned a unique, case-insensitive name with this keyword". So the following description, even if not recommended, is not forbidden :

TTYPE18 = 'b_logMBH' / [1/10]? Lower limit of logMBH

TTYPE19 = 'B_logMBH' / [3/11]? Upper limit of logMBH

TOPCAT interprets correctly the two columns and their values.
fv is treating them case-insensitive, and duplicates values of column 18 into column 19.
Most likely a bug to report to fv developers.
Posted by niu541412 (2019/00/18 18:49:12)
[J/ApJ/835/223]
The fits files of this paper which can are downloaded directlly from the ftp tab(http://cdsarc.u-strasbg.fr/viz-bin/cat/J/ApJ/835/223#browse) have duplicated columns. For fits 1, two columns named B_logMBH and b_logMBH have the same value. Actually, they should be the upper and lower limit values of the blackhole mass. In fits 2, a similar problem of NH exists. Dat file and html files are correct.
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