Acta Astronomica Archive

Data related to the paper by Osborn, Kopacki and Haberstroh entitled 
"New Observations and Period Change Study for the Anomalous Cepheid in M92"
The data consist of the following files:
- Table A1:  CCD observations of M92 V7 (TableA1.txt)
- Table A2:  New photographic photometry for M92 V7 (TableA2.txt)
- Table A3:  Archival observations of M92 V7 (TableA3.txt)
- Description of the tables (this file, ReadMe.txt)


Table A1:  CCD observations of M92 V7 
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The four columns contain, respectively:
  1: Photometric passband: V or I (Cousins).
  2: Heliocentric Julian Date of mid-exposure of observation.
  3: Magnitude. 
  4: Error of the magnitude from the image subtraction method (ISM).
  


Table A2:  New photographic photometry for M92 V7
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The four columns contain, respectively:
  1: Telescope used and plate number.
  2: Photometric passband: V, B, U, photovisual (pv) or photographic (pg).
  3: Heliocentric Julian Date of mid-exposure.
  4: Magnitude.
  


Table A3:  Archival observations of M92 V7
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The consecutive columns contain, for each data set:
  1: Published Heliocentric Julian Date.
  2: Published magnitude. 

Note 1: The source of the data is listed at the start of each of the three 
  data sets. 

Note 2: Hachenberg (1939) did not publish his epochs and magnitudes. The values 
  listed here are the heliocentic Julian dates of Hachenberg's plates as 
  provided us by C. Bartolini and the corresponding magnitudes for those epochs 
  deduced from Hachenberg's published elements and phased light curve.  

Note 3: Nassau used a different numbering system for the variables.  M92 V7 
  is denoted Variable 5 in his paper.