An atlas of ultraviolet spectra of star-forming galaxies
Kinney, A. L.; Bohlin, R. C.; Calzetti, D.; Panagia, N.; Wyse, Rosemary F. G. 1993ApJS...86....5K

Data loading steps

1. Associated literature:
   refcode 1993ApJS...86....5K
   data downloaded from CDS
   
   
2. Read associated literature to learn about the nature of the dataset:
   • tabulated/common information:
     galaxy name listed in Table 1
     exptime read from atlas file
     pa N/A
     pos_origin published-value
     pos_units sexagesimal
     pos_system equatorial
     pos_equinox B1950
     flux_unit erg s^-1 cm^-2 A^-1
     bandpass Ultraviolet
     obs_mode long-slit
     
     
   • telescopes used and instrument setup:
     telescope IUE
     instrument SWP and/or LWP/LWR
     detector SEC vidicon television camera with an ultraviolet converter ^note_a
     disperser cross-disperser grating ^note_a
     spect_res 5A (short-wavelength) & 8A (long-wavelength)
     seeing N/A
     airmass N/A
     aperture 10 arcsec
     slit_length 20 arcsec
     
     ^note_a Information found within IUE info page
     
     
   • region sampled by spectral observation, and the region actually extracted during data reduction:
     obs_region nucleus
     ex_reg_leng N/A
     
     
   • calibration:
     flux calibration YES (Bohlin & Grillmair 1988ApJS, 66, 209; Bohlin & Grillmair 1988, ApJS, 68,487)
     absolute calibration YES (Bohlin et al. 1990, ApJS, 73, 413)
     sky subtraction N/A
     
     
3. The spectral data is contained in a single ascii file: atlas. A perl script, split_atlas.pl, is written to separate out the individual co-added ascii speactra for each object, and provide some averaged wavelength bin widths and average exposure times, in a output file called: atlas.tab. This is done by running the script in the same directory as atlas. Two sets of ascii spectra file results from this, one author version (*_AUTHOR.asc) and one NED standard (*_NED.asc).

       :~> perl split_atlas.pl
   

4. Object names (names.txt) are extracted from table 1 (table1.txt) of the published paper, then cross-matched with the pervious data table atlas.tab using the script FINDdiff.pl:

       :~> perl ~/bin/FINDdiff.pl -keepall -m -col=1,1 -sep="\t" names.txt atlas.tab > LOG_FINDdiff_1
   

   The results are in names.txt_atlas.tab.common and any unmatched lines are reported in LOG_FINDdiff_1:

   	names.txt              atlas.tab
   	MCG6-28-44             MGC6-28-44
   	NGC4861+               NGC4861
   	TOL1924-416            TOL1924-41
   	1941-543               1942-543
   

5. To get NED format names of galaxies, we first run nedname on the set of author given galaxy names in names.txt:

       :~> nedname names.txt names.txt.out
   

   after fixing a few typical "ESO-???" problems - e.g. ESO 296-???011 → ESO 296-IG 011, the fixed name list is exported to names-fixed.txt and we use the seekNEDnames.pl script to test the validity of these names:

       :~> perl ~/bin/seekNEDnames.pl names-fixed.txt
   

   In this case, there are 5 object names not found in NED, I used NED's near-position search to find their possible counter-part via confrimation of the current refcode being listed in as a reference to the object (this can be automated) then look through the appropiate cross-ID list to "guess" the best match in name format and grab the NEDra & NEDdec, e.g.:

           published names    closest NED name
           1050+04            CGCG 1050.4+0454
           UGC7905S           UGC 07905 NED01
           UGC8315N           UGC 08315 NED02 ?
           1350-00            CGCG 1350.2+0022
           1941-543           ESO 194103-5422.3
   

6. Next, we rename the ascii files with the associated NED names, command list in rename.
   
   
7. Finally, after all the metadata are collected, the content of the EXCEL file: metadata_table.xls is copied into a text file (named metadata_table.fin), used as the input to the loader script generate_spectraDB_loader.pl:

   	perl generate_spectraDB_loader.pl metadata_table.fin
   

8. This script also generate the input file for the script which makes the previews:

   	perl generate_spectraDB_preview.pl
   

9. Finally run script makeVOtable.pl on the NED ASCII spectra to create votable-xml files:

   	perl makeVOtable.pl *_NED.txt
   

• Update 17 May 2006: Both generate_NED_ASCII.pl and generate_VOtable.pl have been updated to generate homoginized values.

  	:~> perl ~/research/NEDsp/Codes/generate_NED_ASCII.pl -col=1,6,8 -units=A,erg_cm2_s_A -err_exp='$ferr=$flux*$ferr' DATA/*.txt
  	:~> perl ~/research/NEDsp/Codes/generate_VOtable.pl DATA/*_NED.txt
  

  Just noticed the pdchannel values from split_atlas.pl is garbage, replacing it with those in info.txt (from generate_NED_ASCII.pl) by matching NED_names.txt with info.txt

  	:~> perl ~/bin/FINDdiff.pl -keepall -m -sep="\t" NED_names.txt info.txt 
  

  ---

  Unresolved issues: 
    (1) NGC 1614 number of co-added spectra stated in paper different to that in the ASCII file; 
    (2) Significance of "N" in UGC 8315N
  

  
  
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