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J/ApJ/835/223
  A catalog of nearby galaxies with Chandra obs. (She+, 2017)
ReadMe+ftp
2017ApJ...835..223S
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2 annotation(s) 		img(gal)
1.J/ApJ/835/223/table4Fitting results of galaxies (168 rows)

Simple ConstraintList Of Constraints
 
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   [10/698] Source sequence number (meta.id)
  Name (char) Object Name (meta.id;meta.main)
  Model (char) Best fit model (Note 1)   (stat.param;meta.modelled)
  Norm1 [-] (n) [-6.1/-2.3] Log normalization of power-law component; in photons/keV/cm2/s units (stat.fit.param)
  logL1 [10-7W] (n) [36/43] Log of 0.3-10keV luminosity of power-law component; in erg/s (phys.luminosity;em.X-ray)
  Norm2 [-] (n) [-6.5/-3.7] Log normalization of 2nd component (Note 2)   (stat.fit.param)
  logL2 [10-7W] (n) [36/41] Log of 0.3-10keV luminosity of 2nd component; in erg/s (phys.luminosity;em.X-ray)
  NH 10+22/cm2(n) [0.02/430] Extragalactic absorption column density (phys.columnDensity)
  b_NH 10+22/cm2(n) Lower limit in NH (phys.columnDensity;stat.min)
  B_NH 10+22/cm2(n) Upper limit in NH (phys.columnDensity;stat.max)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Gamma  (n) [0.5/4.3] Power-law photon index (meta.code;spect.index)
  b_Gamma  (n) Lower limit in Gamma (Note 3)   (meta.note)
  B_Gamma  (n) Upper limit in Gamma (Note 3)   (meta.note)
  Temp keV (n) [0.02/1.1] Temperature of mekal or blackbody (phys.temperature)
  b_Temp keV (n) Lower limit in Temp (phys.temperature;stat.min)
  B_Temp keV (n) Upper limit in Temp (phys.temperature;stat.max)
  Chi2  (n) [0.1/655] Chi-square (stat.fit.chi2)
  DOF  (n) [2/493] Degree of freedom (stat.fit.dof)
  Ref (char) Note on spectral fitting or reference for pileup sources (Note G1)   (spect.index)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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Annotations on J/ApJ/835/223
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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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