B-emission Stars in Southern Sky Observed in Bosscha Observatory: Spectroscopic Study of Hα Spectral Line Variability
| Autor: | A. T. P. Jatmiko, Mochamad Irfan, Dhimaz Gilang Ramadhan, Geavani Eva Ramadhania, Hakim L. Malasan, E. I. Akbar, Aprilia Aprilia, Ade Nur Istiqomah |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
spectroscopy
Bright star General Mathematics media_common.quotation_subject General Physics and Astronomy Astrophysics General Biochemistry Genetics and Molecular Biology Spectral line Observatory be–methods Emission spectrum Spectroscopy lcsh:Science lcsh:Science (General) media_common Physics Multidisciplinary General Chemistry General Medicine line profiles – stars Stars emission line Sky General Earth and Planetary Sciences lcsh:Q General Agricultural and Biological Sciences lcsh:Q1-390 |
| Zdroj: | Journal of Mathematical and Fundamental Sciences, Vol 51, Iss 3, Pp 243-251 (2019) |
| ISSN: | 2338-5510 2337-5760 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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