Is this project an undergraduate, graduate, or faculty project?
Undergraduate
Project Type
individual
Campus
Daytona Beach
Authors' Class Standing
Aldir Moreira, Sophomore
Lead Presenter's Name
Aldir Moreira
Lead Presenter's College
DB College of Arts and Sciences
Faculty Mentor Name
Terry Oswalt
Abstract
Gyrochronology, the observed correlation between a star’s period of rotation and its age, is a method that is calibrated based using stellar clusters where ages have been determined by evolutionary models. This project employs a novel “daisy-chain” interpolation algorithm to test the assumption that stars within a given wide binary are the same age, and therefore, should have rotation periods that agree with gyrochronology models. Here we show that the approach does trace lines of constant age across the rotation period vs. color index relation. Additionally, the age dependency of stellar kinematical properties is used to confirm components are gravitationally bound. Preliminary results show that the resulting bands of constant age, known as “gyrochrones”, yield ages that agree within the uncertainties given by other methods in the literature.
Did this research project receive funding support (Spark, SURF, Research Abroad, Student Internal Grants, Collaborative, Climbing, or Ignite Grants) from the Office of Undergraduate Research?
No
Testing the Coevality of Stars in Wide Binary Systems
Gyrochronology, the observed correlation between a star’s period of rotation and its age, is a method that is calibrated based using stellar clusters where ages have been determined by evolutionary models. This project employs a novel “daisy-chain” interpolation algorithm to test the assumption that stars within a given wide binary are the same age, and therefore, should have rotation periods that agree with gyrochronology models. Here we show that the approach does trace lines of constant age across the rotation period vs. color index relation. Additionally, the age dependency of stellar kinematical properties is used to confirm components are gravitationally bound. Preliminary results show that the resulting bands of constant age, known as “gyrochrones”, yield ages that agree within the uncertainties given by other methods in the literature.