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

被引：0

作者：

Aprilia, Aprilia ^{[1
,2
]}

Malasan, Hakim Luthfi ^{[1
,2
]}

Ramadhania, Geavani Eva ^{[1
,2
]}

Jatmiko, Agus Triono Puri ^{[1
,2
]}

Irfan, Mochamad ^{[1
,2
]}

Ramadhan, Dhimaz Gilang ^{[1
,2
]}

Istiqomah, Ade Nur ^{[1
,2
]}

Akbar, Evan Irawan ^{[1
,2
]}

机构：

[1] Inst Teknol Bandung, Fac Math & Nat Sci, Dept Astron, Jalan Ganesha 10, Bandung 40132, Indonesia

[2] Inst Teknol Bandung, Fac Math & Nat Sci, Bosscha Observ, Jalan Peneropongan Bintang 45, Lembang 40391, Indonesia

来源：

JOURNAL OF MATHEMATICAL AND FUNDAMENTAL SCIENCES | 2019年 / 51卷 / 03期

关键词：

Be; -; methods; emission line; line profiles - stars; spectroscopy; GAMMA-CASSIOPEIAE;

D O I：

10.5614/j.math.fund.sci.2019.51.3.3

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

H alpha 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.

引用

页码：243 / 251

页数：9