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J/AJ/133/1585       Stromgren photometry in NGC 6791     (Anthony-Twarog+, 2007)
vbyCaHβ CCD photometry of clusters.
VIII. The super-metal-rich, old open cluster NGC 6791.
    Anthony-Twarog B.J., Twarog B.A., Mayer L.
   <Astron. J., 133, 1585-1598 (2007)>
   =2007AJ....133.1585A
ADC_Keywords: Clusters, open ; Photometry, CCD ; Photometry, uvby

Keywords: Hertzsprung-Russell diagram -
          open clusters and associations: individual (NGC 6253, NGC 6791)

Abstract:
    CCD photometry on the intermediate-band vbyCaHβ system is
    presented for the metal-rich, old open cluster NGC 6791.

Description:
    New photometric data for NGC 6791 were obtained using the 0.9 meter
    Wisconsin-Indiana-Yale-NOAO (WIYN) telescope on Kitt Peak, on five
    photometric nights between 2004 May 27 and May 31.
Objects:
    -----------------------------------------------
       RA   (2000)   DE      Designation(s)
    -----------------------------------------------
    19 20 53      +37 46.3   NGC 6791 = C 1919+377
    -----------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat       104     6313   Extended Stromgren photometry in NGC 6791


See also:
     J/AJ/119/2282 : Stromgren photometry of IC 4651 (Anthony-Twarog+, 2000)
     J/AJ/125/1383 : Stromgren photometry of NGC 6253 (Anthony-Twarog+, 2003)
     J/AJ/127/1000 : Stromgren photometry of NGC 3680 (Anthony-Twarog+, 2004)
     J/AJ/129/872  : Stromgren photometry of NGC 2243 (Anthony-Twarog+, 2005)
     J/AJ/131/461  : Stromgren photometry of NGC 2420 (Anthony-Twarog+, 2006)


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1-  5  I5    ---     WEBDA     The Webda designation,
                                   Cl* NGC 6791 ATM NNNNN in Simbad
   7- 13  F7.2  pix     Xpos      The X pixel coordinate
  15- 21  F7.2  pix     Ypos      The Y pixel coordinate
  23- 28  F6.3  mag     Vmag      Stromgren V band magnitude
  30- 35  F6.3  mag     b-y       Stromgren (b-y) colour
  37- 42  F6.3  mag     m1        ? Stromgren m1 index
  44- 49  F6.3  mag     Hb        ? Stromgren Hβ colour index
  51- 56  F6.3  mag     hk        ? Stromgren hk [(Ca-b) - (b-y)] colour index
  58- 62  F5.3  mag     e_Vmag    The 1σ error in Vmag
  64- 68  F5.3  mag     e_b-y     The 1σ error in b-y
  70- 74  F5.3  mag     e_m1      ? The 1σ error in m1
  76- 80  F5.3  mag     e_Hb      ? The 1σ error in Hb
  82- 86  F5.3  mag     e_hk      ? The 1σ error in hk
  88- 89  I2    ---     o_y       Number of y band observations
  91- 92  I2    ---     o_b       Number of b band observations
  94- 95  I2    ---     o_v       Number of v band observations
  97- 98  I2    ---     o_w       Number of w band observations
 100-101  I2    ---     o_n       Number of n band observations
 103-104  I2    ---     o_Ca      Number of Ca band observations


History:
    From electronic version of the journal

References:
  Anthony-Twarog & Twarog, Paper I    2000AJ....119.2282A, Cat. J/AJ/119/2282
  Anthony-Twarog & Twarog, Paper II   2000AJ....120.3111A
  Twarog et al.,           Paper III  2003AJ....125.1383T, Cat. J/AJ/125/1383
  Anthony-Tawrog & Tawrog, Paper IV   2004AJ....127.1000A, Cat. J/AJ/127/1000
  Anthony-Tawrog et al.,   Paper V    2005AJ....129..872A, Cat. J/AJ/129/872
  Anthony-Tawrog et al.,   Paper VI   2006AJ....131..461A, Cat. J/AJ/131/461
  Tawrog et al.,           Paper VII  2006AJ....132..299T
(End)                  Greg Schwarz [AAS], Patricia Vannier [CDS]    22-Aug-2009