Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/catalogs/1/1142/

The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:

1. Use the ADC Data Viewer Suite to visualize the data. [preview
2. Get the data files via anonymous FTP. (See Note.) [ftp


I/142       Lunar Occultations of IRAS Point Sources 1991-2000 (Simon+ 1989)
================================================================================
Lunar Occultations of IRAS Point Sources:  1991-2000
    Simon M., Cassar L., Chen W.P.
    <Astrophys. J. Suppl. Ser., 69, 651 (1989)>
    =1989ApJS...69..651C
================================================================================
ADC_Keywords: Occultations; Infrared sources

Description:
   A listing of objects in the IRAS Point Source Catalog (1985) that were or 
   will be occulted by the Moon during 1991-2000 is presented. Objects from 
   the IRAS PSC that will have geocentric occultations during the years 1991-
   2000 were identified using procedures described in Simon et al. (1986). 
   This list is a sequel to the list of occultations for the years 1986-1990 
   (ADC catalog 1123).

File Summary:
--------------------------------------------------------------------------------
 FileName     Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe           80        .   This file
data.dat         80    27998   Occultation data on IRAS PSC objects
--------------------------------------------------------------------------------

Byte-by-byte Description of file: data.dat
--------------------------------------------------------------------------------
   Bytes Format  Units   Label      Explanations
--------------------------------------------------------------------------------
   1- 10  A10    ---     IRAS      *IRAS Point Source Cat. Object name
  12- 13  I2     a       yr1        ? Beginning year
  15- 16  I2     a       yr2        ? Ending year
  18- 26  E9.3   Jy      flux12     ?  12 um Flux density
  27- 35  E9.3   Jy      flux25     ?  25 um Flux density
  36- 44  E9.3   Jy      flux60     ?  60 um Flux density
  45- 53  E9.3   Jy      flux100    ? 100 um Flux density
      55  A1     ---     q_flux12  *[HMU]? Quality flag on flux12
      56  A1     ---     q_flux25  *[HMU]? Quality flag on flux25
      57  A1     ---     q_flux60  *[HMU]? Quality flag on flux60
      58  A1     ---     q_flux100 *[HMU]? Quality flag on flux100
  60- 61  I2     ---     cat       *? Catalog number
  63- 75  A13    ---     ID        *? Star identification in cat
      78  A1     ---     rem       *[*]? Remark on multiple identifications
----- ---------------------------------------------------------------------------
Note on IRAS:
   If IRAS is blank, then record is a continuation for the star in the 
     previous record.

Note on q_flux*:
   H   =         high-quality detection
   M   =         medium-quality detection
   U   =         upper bound

Note on cat, ID, rem:
   For an object for which an identification with an object listed in some 
     other astronomical catalog is provided in the IRAS PSC, the catalog 
     number, following the conventions of the IRAS PSC, is given in the cat 
     field, and the object name in that catalog is given.

   Where there is more than one identification with an object listed in 
     another astronomical catalog, an asterisk (*) appears in rem. In this 
     case, only the first identification is indicated in cat and ID. The rest 
     may be obtained from the original IRAS PSC.

See also: 
   I/123/ : Lunar Occultations of IRAS Point Sources, 1986-1990

References:
   IRAS Point Source Catalog. 1985, Joint IRAS Science Working Group 
     (Washington, DC: GPO).
   Cassar L., Chen W.P. and Simon M. 1989, Astrophys. J. Suppl. Ser. 69, 651.
   Simon M., Cassar L. and Chen W.P. 1986, Astrophys. J. Suppl. Ser. 62, 673.
================================================================================
(End)                                  Julie Anne Watko [SSDOO/ADC]  21-AUG-1996

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