Vol. 20 No. 4 (2021): Mapana Journal of Sciences
Research Articles

Identification of a rare class of emission-line stars in transition between pre-main sequence to Main Sequence phase

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  • Suman Bhattacharyya,
  • Blesson Mathew,
  • Gourav Banerjee,
  • R Anusha,
  • Paul K T,
  • Sreeja S Kartha
Suman Bhattacharyya
CHRIST (Deemed to be University), Bengaluru.
Bio
Blesson Mathew
CHRIST (Deemed to be University), Bengaluru.
Bio
Gourav Banerjee
CHRIST (Deemed to be University), Bengaluru.
Bio
R Anusha
University of Western Ontario, Canada.
Bio
Paul K T
CHRIST (Deemed to be University), Bengaluru.
Bio
Sreeja S Kartha
CHRIST (Deemed to be University), Bengaluru.
Bio
DOI: https://doi.org/10.12723/mjs.59.3

Published 2021-10-01

Keywords

  • Emission-line stars,
  • Be star,
  • Herbig Ae/Be star,
  • Transition Phase candidates

Copyright (c) 2021

Creative Commons License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Abstract

Over time, pre-main-sequence (PMS) stars evolve into main-sequence (MS) stars. Stars evolving from PMS to MS phase is a significant subject of research that aims to better understand stellar phases and their properties. Existing literature shows a lack of study of stars in between PMS and MS phase. 'We focused on what belongs in the midst of these two phases. Classical Be (CBe) and Herbig Ae/Be (HAeBe) stars, corresponding to MS and PMS phases, are two well known categories of emission-line stars. Through optical and infrared photometric analysis of a sample of 2167 CBe and 225 HAeBe stars, we identified 98 such rare stars which are in transition between PMS and MS phase. Those rare stars are termed as 'Transition Phase' (TP) candidates in our study. Using the machine learning approach, the potential of the identified TP candidates was verified. 'This article provides a brief overview

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