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Peremennye Zvezdy (Variable Stars) 40, No. 3, 2020 Received 12 April; accepted 17 April.
DOI 10.24411/2221-0474-2020-10004
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Article in PDF |
Photoelectric 
observations of 24 classical
Cepheids
L.N. Berdnikov1, G.N. Abdullaeva2, M.A. Ibrahimov3
- Sternberg Astronomical Institute, Moscow State University,
Universitetskij pr. 13, Moscow 119992, Russia;
leonid.berdnikov@gmail.com
- Ulugh Beg Astronomical
Institute, Astronomical str. 33, Tashkent 700052, Uzbekistan
- Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya str. 48, Moscow 119017, Russia
In June and September 2004, 673 photoelectric
brightness measurements were made for 24 Cepheids using the 60-cm
reflector of Mt. Maidanak Observatory.  light curves and 
and  colour curves are presented.
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Our photoelectric observations were performed between June 14, 2004 and September 19, 2004 (JD 2453171-53268). The 60-cm reflector of the Mt. Maidanak Observatory (Uzbekistan), equipped with a four-channel pulse-counting photoelectric photometer, was used. A description of the observing techniques can be found in Berdnikov and Turner (2004).
We have obtained a total of 673 measurements in system
(Cousins 1976) for 24 Cepheids; observational uncertainties are
close to 0.02 mag in all bands. The light and color curves are
presented in Figs. 1-3. The phases of observations for all the
Cepheids were calculated with the elements from the General
Catalogue of Variable Stars (Samus et al., 2017). The observations
are available in a text file in the html
version of the paper.
Acknowledgments: This work was supported by the Russian
Foundation for Basic Research (project nos. 18-02-00890 and
19-02-00611) to LNB and through the national grant programs of the
Center for the Science and Technologies of the Republic Uzbekistan
to MAI and AGN. We are also grateful to the administration of Mt.
Maidanak Observatory for allocation of a large amount of observing
time for this observing program.
References:
Berdnikov, L.N., Turner, D.G., 2004, Astron. Astrophys. Trans., 23, 253
Cousins, A.W.J., 1976, Mem. RAS, 81, 25
Samus, N.N., Kazarovets E.V., Durlevich O.V., Kireeva N.N.,
Pastukhova E.N., 2017, Astron. Rep., 61, 80
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Fig. 1. Light and color curves for U Aql, SZ Aql, TT Aql, EV Aql, FF Aql, FM Aql, FN Aql, V336 Aql, V496 Aql, and V600 Aql. |
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Fig. 2. Light and color curves for V733 Aql, V1344 Aql, CE Cas, U Sgr, W Sgr, X Sgr, Y Sgr, XX Sgr, YZ Sgr, AP Sgr, and BB Sgr. |
