Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/journal_tables/A+AS/109/487/

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

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J/A+AS/109/487                   Color-magnitude study of M 22  (Samus+, 1995)
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A new photographic color-magnitude study of M 22 = NGC 6656
     Samus N., Kravtsov V., Pavlov M., Alcaino G., Liller W.
    <Astron. Astrophys. Suppl. Ser. 109, 487 (1995)>
    =1995A&AS..109..487S      (SIMBAD/NED Reference)
================================================================================
ADC_Keywords: Clusters, globular ; Photometry, photographic
Keywords: globular clusters: individual: M 22 - HR diagram

Description:
   A new photographic C-M diagram for the globular cluster M 22 based
   on automatic plate measurements has been obtained. It reaches the
   main sequence turn-off at V=~17.1mag, (B-V)=~0.75.


Objects:
    ----------------------------------------------
      RA  (2000)  DE   Designation(s)
    ----------------------------------------------
     18 36.4  -23 54   M22 = NGC 6656 = C 1833-239
    ----------------------------------------------

File Summary:
--------------------------------------------------------------------------------
  FileName      Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe             80        .   This file
table2             26     3373   Photographic photometry in M 22
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Byte-by-byte Description of file: table2
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   Bytes Format  Units   Label    Explanations
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   2-  6  F5.2   mm      x        x coordinate (increase to the west)
   9- 13  F5.2   mm      y        y coordinate (increase to the south)
  15- 19  F5.2   mag     Vmag     V magnitude
  22- 25  F4.2   mag     B-V      B-V color
--------------------------------------------------------------------------------
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(End)                                        Patricia Bauer [CDS]    1994-Oct-24
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