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Studying spectral behavior, Accretion processes and photometric behavior of some binary stars in the ultraviolet and optical regions / Gamal Edin Mohamed Naguib Gamal Edin Hamed ; Supervised Shahinaz Mostafa Ali Yousef , Mostafa Abedelbaky Elrafy , Magdy Rabie Sanad

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Gamal Edin Mohamed Naguib Gamal Edin Hamed , 2018Description: 113 P. ; 25cmOther title:
  • دراسة السلوك الطيفى و عمليات التراكم و السلوك الفوتوميترى لبعض النجوم المزدوجة فى نطاقى الضوء المرئى و الأشعة فوق البنفسجية [Added title page title]
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Dissertation note: Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Astronomy and Meteorology Summary: We study the evolution of the normalized flux of selected ultraviolet emission lines of three classical novae (PW Vul, V1668 Cyg and V1974 Cyg). Different phases of the outbursts are studied. We attribute the spectral behavior of the three systems to the variation of the optical thickness and temperature of the envelope during the different phases of the outbursts. Our results are consistent with the theoretical models of classical novae. We also present optical photometric observations of the three systems in the post- novae phase. These observations show the variation of the light curves of these systems and the different times of maxima and minima
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.01.Ph.D.2018.Ga.S (Browse shelf(Opens below)) Not for loan 01010110077248000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.01.Ph.D.2018.Ga.S (Browse shelf(Opens below)) 77248.CD Not for loan 01020110077248000

Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Astronomy and Meteorology

We study the evolution of the normalized flux of selected ultraviolet emission lines of three classical novae (PW Vul, V1668 Cyg and V1974 Cyg). Different phases of the outbursts are studied. We attribute the spectral behavior of the three systems to the variation of the optical thickness and temperature of the envelope during the different phases of the outbursts. Our results are consistent with the theoretical models of classical novae. We also present optical photometric observations of the three systems in the post- novae phase. These observations show the variation of the light curves of these systems and the different times of maxima and minima

Issued also as CD

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