American Journal of Astronomy and Astrophysics

Volume 9, Issue 3, September 2021

  • Stellar Aberration from Earth and from a Satellite

    Caesar Viazminsky, Piere Vizminiska

    Issue: Volume 9, Issue 3, September 2021
    Pages: 22-31
    Received: 4 June 2021
    Accepted: 28 June 2021
    Published: 9 July 2021
    DOI: 10.11648/j.ajaa.20210903.11
    Abstract: In his endeavor to find a concrete evidence in favor of the Copernican picture of the solar system, the English astronomer James Bradley made a series of astronomical observations during the period (1725-1728) aiming to detect a stellar parallax. His findings, which manifested indeed an annual apparent cyclic motion of a star, were however at confl... Show More
  • Jupiter and Saturn Multi-layer Models Rotating Differentially

    Joel Uriel Cisneros-Parra, Francisco Javier Martinez-Herrera, Daniel Montalvo-Castro

    Issue: Volume 9, Issue 3, September 2021
    Pages: 32-41
    Received: 2 July 2021
    Accepted: 19 July 2021
    Published: 27 July 2021
    DOI: 10.11648/j.ajaa.20210903.12
    Abstract: In a past work, models for Jupiter were constructed in base to a set of concentric distorted spheroids (“spheroidals”) rotating differentially—whose semi-axes are independent of one another—a task that was achieved with a law of rotation deduced from a generalization of Bernoulli’s theorem, and which holds exclusively for axial-symmetric masses. Th... Show More