Publikation     The Delta a Catalog                          (Ch.Stütz, 2004)
================================================================================
The Delta a Catalog
    Ch.Stütz, 2000, Master Theses, Inst. f. Astron. Vienna
================================================================================
Keywords: CP stars, photometry, catalog

Description:
     The Da Catalog contains most measurements in the Da photometric filter
     system obtained in the years 1976-2000. The stars range from spectral type
     F4 to B2. Although the Da-system was created to detect CP2 (Preston 1974) 
     stars, also other types of chemicaly peculiar "A" stars such as Am, HgMn, 
     He-wk, He-str or LambdaBoo are present. Overall the Catalog consists of 
     around 2500 stars, where 1500 were observed in the field and about 1000 
     belong to stellar clusters.


File Summary:
--------------------------------------------------------------------------------
  FileName                      Explanations
--------------------------------------------------------------------------------
Dakat_README.txt                this file
Dakat_Fieldstars_nsv.txt        catalog of fieldstars
Dakat_Clusterstars_nsv.txt      catalog of cluster stars
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
Description of file: Dakat_Fieldstars_nsv.txt
--------------------------------------------------------------------------------

text format ... unicode (UTF-8)

fields are separated by the number symbol " # "

description of the fields:

# STZ        ... index number in this catalog
# HD         ... HD identification
# SAO        ... SAO identification
# Renson     ... identification and quality tag of the Renson catalog
# publ.      ... corresponding publication
# spec.type  ... two dimensional spectral type, if available
# (b-y)o     ... dereddened Strömgren (b-y) color index
# Da         ... Delta a measurement
# pec.type   ... type of pecularity
# remarks


--------------------------------------------------------------------------------
Description of file: Dakat_Clusterstars_nsv.txt
--------------------------------------------------------------------------------

text format ... unicode (UTF-8)

fields are separated by the number symbol " # "

description of the fields:

# STZ        ... index number in this catalog
# Cluster    ... Name of the cluster
# Nr.        ... identification of the star
# (b-y)o     ... dereddened Strömgren (b-y) color index
# (b-y)      ... Strömgren (b-y) color index
# (g1-y)     ... Maitzen (g1-y) color index
# (B-V)      ... Johnson (B-V) color index
# Da         ... Delta a measurement
# remarks


================================================================================
(End)          Ch. Stütz [Inst.f.Astron. Vienna]                     23-Jan-2004