American Journal of Astronomy and Astrophysics

Volume 9, Issue 4, December 2021

  • A New Approach to Sonification of Astrophysical Data: The User Centred Design of SonoUno

    Johanna Casado, Beatriz García, Poshak Gandhi, Wanda Díaz-Merced

    Issue: Volume 9, Issue 4, December 2021
    Pages: 42-51
    Received: 7 April 2022
    Accepted: 6 May 2022
    Published: 31 May 2022
    Abstract: Even when actual technologies present the potential to augment inclusion and the United Nations has been stablished the digital access to information as a human right, people with disabilities continuously faced barriers in their profession. In many cases, in sciences, the lack of accessible and user centred tools left behind researches with disabi... Show More
  • A Model of the Dynamics of Open Clusters: Time-Scales, Core Collapse and Blue Stragglers

    Félix Llorente de Andrés, Carmen Morales Durán

    Issue: Volume 9, Issue 4, December 2021
    Pages: 52-66
    Received: 24 November 2022
    Accepted: 12 December 2022
    Published: 27 December 2022
    Abstract: This work presents a mathematical model of dynamic of open clusters (OC) from which their time scales are deduced as well as the number of blue stragglers (BS) present in the cluster. The model is based on the expansion of mass through a sphere defined by a radius, and at a time; this variation of mass is translated into a differential equation tha... Show More