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Photometric observations of Cepheids from the ASAS-3 catalog: Photoelectric BV I c observations of 46 low-amplitude Cepheids

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Abstract

From December 2006 to January 2008, we performed 1699 BV I c 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-I c 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%.

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Authors and Affiliations

  1. Sternberg Astronomical Institute, Universitetskii pr. 13, Moscow, 119992, Russia

    L. N. Berdnikov & V. V. Kravtsov

  2. South-African Astronomical Observatory, Capetown, South Africa

    A. Yu. Kniazev

  3. Instituto de Astronomía, Universidad Católica del Norte, Antofagasta, Chile

    V. V. Kravtsov

  4. Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya ul. 48, Moscow, 109017, Russia

    E. N. Pastukhova

  5. Saint Mary’s University, 923 Robie Str., Halifax, Nova Scotia, B3H 3C3, Canada

    D. G. Turner

Authors
  1. L. N. Berdnikov
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  2. A. Yu. Kniazev
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  3. V. V. Kravtsov
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  4. E. N. Pastukhova
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  5. D. G. Turner
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Corresponding author

Correspondence to L. N. Berdnikov.

Additional information

Original Russian Text © L.N. Berdnikov, A.Yu. Kniazev, V.V. Kravtsov, E.N. Pastukhova, D.G. Turner, 2009, published in Pis’ma v Astronomicheskiĭ Zhurnal, 2009, Vol. 35, No. 5, pp. 348–357.

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Berdnikov, L.N., Kniazev, A.Y., Kravtsov, V.V. et al. Photometric observations of Cepheids from the ASAS-3 catalog: Photoelectric BV I c observations of 46 low-amplitude Cepheids. Astron. Lett. 35, 311–320 (2009). https://doi.org/10.1134/S1063773709050041

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  • DOI: https://doi.org/10.1134/S1063773709050041

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