Abstract

Theoretical calculations of stellar evolution in the neighborhood of the main sequence were carried out with the UNIVAC computer at the Livermore Radiation Laboratory. The work was limited to masses ranging from l.5 to 30 x (mass of sun) and used a primeval composition of weight, consisting of 68 per cent hydrogen, 31 per cent helium, and 1 per cent heavy elements. Interpolation formulas for opacity, equation developed. Time sequences of stellar models were computed for the various masses for the time interval luring which the hydrogen content of the convective cores decreased to essentially zero. The time variation of the relevant parameters describing the stellar interior are given in graphic and tabular form. Tracks for the various masses are exhibited in the colormagnitude diagram. A comparison of curves of constant age with cluster diagrams is made, and estimates of cluster ages are given. (auth)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.