ASTROMETRY OF Χ AND H PERSEI BASED ON PROCESSING OF DIGITIZED PLATES OF ARCHIVE OF THE ASTRONOMICAL INSTITUTE OF THE ACADEMY OF SCIENCES OF THE REPUBLIC OF UZBEKISTAN

Автор(и)

  • M. M. Muminov Ulugh Beg Astronomical Institute of the Uzbek Acad. of Sciences, Узбекистан
  • Q. X. Yuldoshev Ulugh Beg Astronomical Institute of the Uzbek Acad. of Sciences, Узбекистан
  • Sh. A. Ehgamberdiev Ulugh Beg Astronomical Institute of the Uzbek Acad. of Sciences, Узбекистан
  • B. B. Kahharov Ulugh Beg Astronomical Institute of the Uzbek Acad. of Sciences, Узбекистан
  • V. N. Andruk Main Astronomical Observatory of the Nat. Academy of Sciences of Ukraine, Україна
  • Yu. I. Protsyuk Research Institute “Nikolaev Astronomical Observatory”, Україна

DOI:

https://doi.org/10.18524/1810-4215.2014.27.81062

Ключові слова:

astrometry, methods, data analysis, proper motions, Galaxy, open clusters and associations, individual, χ, h Persei

Анотація

Work is done  with Epson Expression 10000XL scanner  of  Astronomical Institute  (AI)  of the Academy of Sciences of Uzbekistan. The plates were exposed  with the Normal astrograph (D/F = 330mm / 3467mm, M = 59.56"/mm). The  digitization  of  plates with (16x16) cm in size was made with  resolution  of  1200  dpi (1px = 1.25"). Test research was done using plates at  first (1935.0) and second (1976.9) epochs in the sky area around the χ and h Persei  clusters  (field of view is  2°x2°). Coordinates and B-magnitude  of  stars were  obtained  using TYCHO-2 as the reference catalog. Errors  of  coordinate differences and proper motions for  reduced  and  reference stars are respectively σαδ = ±0.074" and σμαδ = ±0.0018"/year (655 stars). Errors of photometry are σm = ±0.065m and σB = ±0.208m  for  internal convergence and in comparison  with TYCHO-2 catalog. Comparison with UCAC4  catalog  for 8123 stars with B≤17.5m gave us errors of σαδ = ±0.28", σμαδ = ±0.0075"/year and σm = ±0.139m for the equatorial coordinates, proper motions and magnitudes, respectively.

 

Посилання

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Odessa Astronomical Publications, 2014, vol.27, issue 1

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Опубліковано

2014-10-25

Номер

Том 27 № 1 (2014)

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