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J/AJ/107/2101       Berkeley 93 RVB photometry (Saure+ 1994)
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Berkeley 93: a distant star cluster nestled in a dust cloud
     Saurer W., Seeberger R., Weinberger R., Ziener R.
    <Astron. J. 107, 2101 (1994)>
    =1994AJ....107.2101S      (SIMBAD/NED BibCode)
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ADC_Keywords: Photometry, CCD ; Clusters, open

Abstract:
    While performing galactic and extragalactic studies near the galactic
    plane in Cepheus. CCD frames in B, V, and R were taken of the faint
    (V>=16m), previously unstudied open star cluster Berkeley 93 (Be 93).
    Our results indicate that this object is the core of a larger
    aggregate. is slightly evolved. strongly reddened [E(B-V)~1.5], and
    shows a pronounced variable reddening that is probably due to the
    location of the cluster inside (near the border) a dust cloud. By far
    the reddest, and obviously most evolved star is a (variable) carbon
    star that-because of its reddening and location-appears to be a
    cluster member. We present arguments in favor of a large distance of
    more than 5kpc for Be 93 which possibly belongs to the galactic warp.
    As an addendum, we present six star concentrations discovered on the
    POSS or ESO/SERC atlas that might represent hitherto uncatalogued open
    star clusters of "Berkeley type."

Objects:
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       RA  (2000)  DE    Designation(s)
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     21 56.2    +63 56   Berkeley 93 = C 2154+637
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File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table1             37      216   Photometry of Berkeley 93
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Byte-by-byte Description of file: table1
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   Bytes Format Units   Label     Explanations
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   1-  3  I3    ---     Seq       Star sequential number
   5-  9  F5.2  mag     Rmag      R magnitude
  11- 15  F5.2  mag     Vmag      V magnitude
  17- 21  F5.2  mag     Bmag      ? B magnitude
  23- 26  F4.2  mag     V-R       V-R colour index
  28- 31  F4.2  mag     B-V       ? B-V colour index
      33  A1    ---     Member    [C] C: cluster star; blank: field star
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History: Prepared via OCR at CDS.
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(End)                          James Marcout,  Patricia Bauer [CDS]  25-Mar-1997