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J/PAZh/35/348       Photoelectric observation of Cepheids     (Berdnikov+, 2009)
Photometric observation of Cepheids from the ASAS-3 Catalog:
Photoelectric BVIc observations of 46 low-Amplitude Cepheids.
    Berdnikov L.N., Kniazev A.Yu., Kravtsov V.V., Pastukhova E.N., Turner D.G.
   <Pis'ma Astron. Zh. 35, 348 (2009)>
   =2009PAZh...35..348B
   =2009AstL..35...311B
ADC_Keywords: Stars, variable; Photometry


Abstract:
    From December 2006 to January 2008, we performed 1699 BVIc
    observations for 46 low-amplitude Cepheids discovered in the course of
    the ASAS project using the 76-cm telescope of the South-African
    Astronomical Observatory (SAAO). We provide the tables of observations
    and V light and B-V and V-Ic color curves. These new observations,
    along with data from the ASAS-3 catalog, have been used to improve the
    elements of the light variations. Our data allow the number of known
    Galactic low-amplitude Cepheids to be almost doubled. This makes it
    possible to increase the number of distance indicators suitable for
    studying the structure of the inner Galactic arms by almost 15%.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        49     1699   Photoelectric observations of Cepheids from
                              the ASAS-3 catalog
table2.dat        54       46   New elements of the light variations for
                              low-Amplitude Cepheids from ASAS-3 catalog


See also:
   II/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2002-2005)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1- 13  A13   ---     ASAS      Name of Cepheid (HHMMSS+DDMM.m),
                                   ASAS JHHMMSS+DDMM.m in Simbad
  16- 27  F12.4 d       HJD       [2454076/2454477] Heliocentric Julian date
  30- 35  F6.3  mag     Vmag      ? Johnson V magnitude
  38- 42  F5.3  mag     B-V       ? Johnson B-V color index
  45- 49  F5.3  mag     V-Ic      ? Johnson-Cousins V-Ic color index


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

   Bytes Format Units   Label     Explanations

   1- 13  A13   ---     ASAS      Name of Cepheid (HHMMSS+DDMM.m),
                                   ASAS JHHMMSS+DDMM.m in Simbad
  16- 26  F11.3 d       HJD       Initial epoch, HJD
  29- 33  F5.3  d       e_HJD     Error on HJD
  36- 44  F9.6  d       Per       Period
  47- 54  F8.6  d       e_Per     rms uncertainty on Per

(End)                                       Veta Avedisova (INASAN)  14-Dec-2009