Changes to the CIO documentation for version 5.1:

This is the Catalog of Infrared Observations, Edition 5.1
by Daniel Y. Gezari, Patricia S. Pitts[1], and Marion Schmitz[2]

[1] Computer Sciences Corporation
[2] Infrared Processing and Analysis Center

Data are from online version 5.1 of the CIO (articles published through
1998)

                  **CHANGES TO EDITION 5.1**

MAIN CATALOG

Files = 00.dat through 23.dat and 99.dat

The journal list is complete for 1962-1998. To date, almost 7000 journal 
articles and 10 major survey catalogs have been included, for a total of 
396,243 individual observations. The following journals have been searched 
through 1998 (journal abbreviations used in the bibliography are 
indicated in parentheses):
                                                      No. of articles
Astronomical Journal (A. J.)                               757
Astronomy & Astrophysics (ASTR. AP.)                      1355
Astronomy & Astrophysics Supplment (ASTR. AP. SUPPL.)      171
Astrophysical Journal (AP. J.)                            2037
Astrophysical Journal Letters (AP. J. (LETTERS))           866
Astrophysical Journal Supplement Series (AP. J. SUPPL.)    138
Monthly Notices of the Royal Astronomical Society         1045
                                    (M. N. R. A. S.)
Publications of the Astronomical Society of the            243
Pacific (P. A. S. P.) 


In byte one of the main catalog, 5 = data from 1998; ! = nominal 
position for data from 1998. See the FORMATS file for a complete 
description of the main catalog files.


Table 2: Abbreviations for Published Flux Units

      No. of journals         abbreviation
         using unit         (See UNITS file)

            29                      A
            47                      B
           558                      C
           187                      D
            78                      E
           134                      F
           186                      G
            14                      H
            16                      I
          1185                      J
             2                      JA
            20                      K
            12                      L
          2572                      M
            52                      MA
             6                      N
           308                      P
             6                      Q
             8                      R
          1809                      S
             9                      T
           179                      W
           229                      X
            50                      Y
             5                      Z

    
Table 5: Source Name Abbreviations and References 

Available from the editors as a Microsoft Word file.


APPENDIX A=ATLAS OF INFRARED SPECTRAL RANGES

File=spectra.dat
No changes


APPENDIX B=BIBLIOGRAPHY OF INFRARED ASTRONOMY (Alphabetical Order)

File=refauth.dat
no changes


APPENDIX C=BIBLIOGRAPHY OF INFRARED ASTRONOMY (Chronological Order)

File=refchron.dat
No changes


APPENDIX D=INDEX OF INFRARED SOURCE POSITIONS

File=names.dat
no changes


IRAS POINT SOURCE CATALOG OBJECTS IN THE CIO

File=psc.dat
PSC positions and fluxes are taken from version 2 of the Point Source Catalog.
The internet utility CATSCAN, accessed via the
World Wide Web at http://irsa.ipac.caltech.edu/applications/CatScan/
was used to update this information for 1998.