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The Colours Of The Sun And Sun-Like Stars - Mehmet Tanrıver - Gece Aka

The Colours Of The Sun And Sun-Like Stars

Liste Fiyatı : 114,66
İndirimli Fiyat : 97,46
Kazancınız : 17,20
9786052887530
642798
The Colours Of The Sun And Sun-Like Stars
The Colours Of The Sun And Sun-Like Stars
97.46

The Sun is not a point source, the photometric observational techniques that are utilised for observing other stars cannot beutilised for the Sun, meaning that it is difficult to derive its colours accurately for astronomical work from direct measurements indifferent passbands. Until recently, most of the work concerning the subject has been based on indirect methods.

The solar twins are the best choices because they are the stars that are ideally the same as the Sun in all parameters, and also,their colours are highly similar to those of the Sun. From the 60 articles on the Sun and Sun-like stars in the literature from 1964 untiltoday, the solar colour indices in the optic (U, B, V, R, and I filters) and infrared regions (J, H, K, L and M filters) have been
estimated.

Accordingly, the solar colour indices are B-V = 0.6457, U-B = 0.1463, etc. The distribution of the colour indices (B-V, U-B, etc.) forthe G2V spectral type shows that these are good criteria for the solar twin stars and are in the ranges of 0.606 (±0,006) ≤ B-V ≤ 0.688(±0,004), 0.054 (±0,014) ≤ U-B ≤ 0.228 (±0,012), etc. Based on these colour indices, these Sun-like stars have been listed in theASAS and are considered solar analog or solar twin stars.

  • Açıklama
    • The Sun is not a point source, the photometric observational techniques that are utilised for observing other stars cannot beutilised for the Sun, meaning that it is difficult to derive its colours accurately for astronomical work from direct measurements indifferent passbands. Until recently, most of the work concerning the subject has been based on indirect methods.

      The solar twins are the best choices because they are the stars that are ideally the same as the Sun in all parameters, and also,their colours are highly similar to those of the Sun. From the 60 articles on the Sun and Sun-like stars in the literature from 1964 untiltoday, the solar colour indices in the optic (U, B, V, R, and I filters) and infrared regions (J, H, K, L and M filters) have been
      estimated.

      Accordingly, the solar colour indices are B-V = 0.6457, U-B = 0.1463, etc. The distribution of the colour indices (B-V, U-B, etc.) forthe G2V spectral type shows that these are good criteria for the solar twin stars and are in the ranges of 0.606 (±0,006) ≤ B-V ≤ 0.688(±0,004), 0.054 (±0,014) ≤ U-B ≤ 0.228 (±0,012), etc. Based on these colour indices, these Sun-like stars have been listed in theASAS and are considered solar analog or solar twin stars.

      Format
      :
      Kitap
      Stok Kodu
      :
      9786052887530
      Boyut
      :
      16.00x24.00
      Sayfa Sayısı
      :
      362
      Basım Yeri
      :
      Ankara
      Baskı
      :
      1
      Basım Tarihi
      :
      2020-12
      Kapak Türü
      :
      Ciltsiz
      Kağıt Türü
      :
      1. Hamur
      Dili
      :
      İngilizce
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