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Contributions from the Princeton University Observatory Volume 3 by Princeton University Observatory - Paperback
105.00 درهم

Contributions from the Princeton University Observatory Volume 3 by Princeton University Observatory - Paperback

كن أول من يقيِّم هذا المنتج 

105.00 درهم 

  - ستوفر -105.00 درهم
الأسعار تشمل ضريبة القيمة المضافة  التفاصيل
رقم ال ISBN
9781130855494
الفئات
تاريخ
الكاتب
Princeton University Observatory
الناشر
Rarebooksclub.com
الوصف:

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...from the remaining 138 sets are given by him in the Publications of the Allegheny Observatory, 2, 54. The discussion of the uniform photometric orbit is now taken up again because it ...

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التوصيل خلال السبت ٥ مايو - الأحد ٦ مايو الي دبي

حالة السلعة:
جديدة
البائع:
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معلومات المنتج

  •  

    المواصفات

    رقم ال ISBN
    9781130855494
    الفئات
    تاريخ
    اللغات
    الانجليزية
    الرقم المميز للسلعة
    2724353422699
    المؤلفين
    الكاتب
    Princeton University Observatory
    رقم ال ISBN
    9781130855494
    الفئات
    تاريخ
    اللغات
    الانجليزية
    الرقم المميز للسلعة
    2724353422699
    المؤلفين
    الكاتب
    Princeton University Observatory
    المؤلفين
    الناشر
    Rarebooksclub.com
    معلومات تقنية
    غلاف الكتاب
    غلاف عادي
    اللغات والبلدان
    لغة الكتاب
    الانجليزية
    إقرأ المزيد
  •  

    الوصف:

    This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...from the remaining 138 sets are given by him in the Publications of the Allegheny

    This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...from the remaining 138 sets are given by him in the Publications of the Allegheny Observatory, 2, 54. The discussion of the uniform photometric orbit is now taken up again because it is believed some improvement can be made. The probability that the component stars are elliptical was suggested by Schlesinger, but the matter was not considered in the computations, evidently because of the uncertainty of the photometric work and because of the inconvenience of the methods of determining the ellipticity then in use. In the present discussion of the system the ellipticity shows up very distinctly and becomes of considerable importance, therefore, in deriving the orbital elements. The normal magnitudes are repeated from the Allegheny publication in the following table. The phases of the first column have been changed in the fifth to refer in all cases to the time of the preceding minimum, which comes 0.135 days after the initial epoch chosen by Wendell. The observed magnitudes and the residuals from the curve computed at Allegheny for the best uniform orbit are given in the second and fourth columns. The ellipticity constant, z = 0.20, has been obtained from the maximum light observations in the same manner as for WZ Cygni in a preceding section, and the observed magnitudes have been rectified by the use of the ellipticity correction curve which is derived in the following table. The loss of light at any time due to the ellipticity variation is 1--L = V--z cos2 0, so that by transforming the quantity z cos2 0 in the middle row of the table above into stellar magnitude, we have twice the corresponding increment of loss, Axw, expressed in magnitudes. The times in the last row correspond to the angles in the first; hence plotting the last two rows we have a curve t.

    خصائص المنتج:
    • الفئات: تاريخ
    • غلاف الكتاب: غلاف عادي
    • لغة الكتاب: الانجليزية
    • الكاتب: Princeton University Observatory
    • الناشر: Rarebooksclub.com
    • رقم ال ISBN: 9781130855494
    • عدد الصفحات: 58
    • لأبعاد (الارتفاع*العرض*العمق): 9.69 x 7.44 x 0.12 inches
 

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