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

Authors

  • Suman Bhattacharyya CHRIST (Deemed to be University), Bengaluru.
  • Blesson Mathew CHRIST (Deemed to be University), Bengaluru.
  • Gourav Banerjee CHRIST (Deemed to be University), Bengaluru.
  • R Anusha University of Western Ontario, Canada.
  • Paul K T CHRIST (Deemed to be University), Bengaluru.
  • Sreeja S Kartha CHRIST (Deemed to be University), Bengaluru.

DOI:

https://doi.org/10.12723/mjs.59.3

Keywords:

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

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

Author Biographies

Suman Bhattacharyya, CHRIST (Deemed to be University), Bengaluru.

Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, Karnataka, India.

Blesson Mathew, CHRIST (Deemed to be University), Bengaluru.

Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, Karnataka, India.

Gourav Banerjee, CHRIST (Deemed to be University), Bengaluru.

Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, Karnataka, India.

R Anusha, University of Western Ontario, Canada.

Research Scholar, University of Western Ontario, Canada.

Paul K T, CHRIST (Deemed to be University), Bengaluru.

Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, Karnataka, India.

Sreeja S Kartha, CHRIST (Deemed to be University), Bengaluru.

Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, Karnataka, India.

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Additional Files

Published

2021-10-01

Issue

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

Section

Research Articles

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Copyright (c) 2021 Suman Bhattacharyya, Blesson Mathew, Gourav Banerjee, Anusha R, Paul KT, Sreeja S Kartha

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