B-emission Stars in Southern Sky Observed in Bosscha Observatory: Spectroscopic Study of Hα Spectral Line Variability

IF 0.5 Q4 MULTIDISCIPLINARY SCIENCES

Journal of Mathematical and Fundamental Sciences Pub Date : 2019-12-31 DOI:10.5614/j.math.fund.sci.2019.51.3.3

A. Aprilia, H. Malasan, G. E. Ramadhania, A. T. P. Jatmiko, M. Irfan, D. G. Ramadhan, A. N. Istiqomah, E. I. Akbar

引用次数: 0

Abstract

Hα line variations of 8 B-emission (Be) stars are presented. Stars that are listed in the Bright Star Catalogue were observed in 2009 at the Bosscha Observatory, Lembang, Indonesia. It was found that 4 stars showed phase changing from Be double-peaked to Be single-peaked emission line profiles, 1 showed single-peaked to double-peaked profiles, 1 showed double-peaked to B-normal, while two other stars did not show phase changing. The stars also showed variations in the V/R and E/C values, which represent the strength of the emission lines. The phase changes were detected from a comparison of the observed data to the current data in the BeSS database.

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博沙天文台观测到的南方天空b发射星:Hα谱线变异性的光谱研究

给出了8颗b发射(Be)星的Hα谱线变化。2009年，在印度尼西亚伦邦的博沙天文台观测到了被列入明亮恒星目录的恒星。发现4颗恒星的发射谱线由Be双峰变为Be单峰，1颗恒星的发射谱线由单峰变为双峰，1颗恒星的发射谱线由双峰变为b正态，另外2颗恒星的发射谱线没有发生相变。这些恒星也显示出V/R和E/C值的变化，这代表了发射线的强度。相位变化是通过BeSS数据库中观测数据与当前数据的比较来检测的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Mathematical and Fundamental Sciences MULTIDISCIPLINARY SCIENCES-

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

24 weeks

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