Journal of Physics Research and Education, Vol. 02

Permanent URI for this collectionhttps://ir.nbu.ac.in/handle/123456789/5611

EDITORIAL NOTE

We are pleased to present the second volume of the departmental journal, Journal of Physics Research and Education, to our readers. The goal of JPRE is to create a unifying impact that encompasses the diverse fields of physics research and education. The current volume has a distinctive aspect of this nature contributed by numerous Ph.D. scholars, postdoctoral scholars, professors, and scientists from various institutions. Apart from the regular research papers, a review and a mini-review are included in the current issue. I must express my deep thanks and gratitude to all the eminent contributors for their scholarly articles to this edition and the entire editorial team for their scholarly support and assistance. Hope this volume will reflect the current state of interdisciplinary research and insightful reviews and will indicate the usefulness of their material to physics education.

Rajat K. Dey
Editor-in-Chief

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Open Access
Estimating Mass and Luminosity of Spectroscopic Binary Stars Using a Python-Based Computational Approach
(University of North Bengal, 2025-03) Kundu, Jayashree; Mandal, Rakesh Kumar; Sarkar, Tamal
Spectroscopic binary stars provide crucial insights into stellar masses, orbital dynamics, and evolutionary processes. This study presents a computational approach to analyzing spectroscopic binary systems using Python by developing an algorithm to estimate their mass and luminosity. In our study, the algorithm processes the spectral data, particularly variations in the Hydrogen-alpha line over time (in Modified Julian Date), to compute radial velocities by incorporating Doppler shifts and applying barycentric corrections. A sinusoidal function is then fitted to the velocity variations to determine the orbital period. The stellar masses are derived using the radial velocity curve with the inclination angle and orbital parameters. Given the mass-luminosity relation, the luminosities of the stars are estimated. Since the derived mass of the system ranges between 2 and 55 times the mass of the sun, the luminosity can be calculated based on the mass-luminosity relation, where luminosity is proportional to the stellar mass raised to the power of 3.5. This computational method offers an efficient and accurate technique for studying spectroscopic binaries, which can be extended to analyze large datasets from astronomical surveys, enhancing our understanding of binary star evolution.