Effect of Galactic Rotation on Radial Velocities and Proper Motion. Part I

• Autorzy: Kamel O. M. , Soliman A. S. , Ammar M. K.
• Języki publikacji: EN

Abstrakty

EN

We expand Δfi the radial velocity of a group of stars moving around the center of galaxy, firstly in circular orbits. The expansion of Δfi is performed up to the third order of O(r/R0)3. A new result is encountered. The Oort constant is splitted into 3 parts A1, A2, A3 instead of one constant A. Moreover we verify the problem when the motion of the stars is elliptic. For proper motion components, there is no split of the second Oort‘s constant B. In all involved expansions orders of magnitude higher than the third in ΔR or r/R0 are neglected.

Słowa kluczowe

EN

orbital mechanics of the stars; stellar kinematics; galactic dynamics

PL

mechanika orbitalna gwiazd; kinematyka gwiezdna; dynamika galaktyczna

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2013
• Tom: Vol. 17, nr 3
• Strony: 251--259
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Kamel O. M.

• Astronomy and Space Science Dept. Faculty of Sciences Cairo University, Giza, Egypt

autor

Soliman A. S.

• Theoretical Physics Dept. National Research Center Dokki, Giza, Egypt

autor

Ammar M. K.

• Mathematics Dept. Faculty of Sciences Helwan University, Helwan, Egypt
• Mathematics Dept. Faculty of Sciences Helwan University, Helwan, Egypt

Bibliografia

• [1] Smart, W. M.: Stellar Kinematics, Ch. 8, Longmans, 1968.
• [2] Roy, A. E.: Orbital Motion, Fourth Edition, IOP Publishing Ltd., Bristol and Philadelphia, 2005.
• [3] Smart, W. M.: Spherical Astronomy, Cambridge University Press, fifth Edition, 1965.
• [4] Binney, J and Termaine, S.: Galactic Dynamics, Princeton University Press, 1987.
• [5] Stewart, C. A.: Advanced Calculus, Methuen, 1951.