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Geavani Eva Ramadhania
Department of Astronomy, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia Bosscha Observatory, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Peneropon
Astronomy Chemistry Earth & Planetary Sciences Mathematics Physics

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B-emission Stars in Southern Sky Observed in Bosscha Observatory: Spectroscopic Study of Hα Spectral Line Variability Aprilia Aprilia; Hakim Luthfi Malasan; Geavani Eva Ramadhania; Agus Triono Puri Jatmiko; Mochamad Irfan; Dhimaz Gilang Ramadhan; Ade Nur Istiqomah; Evan Irawan Akbar
Journal of Mathematical and Fundamental Sciences Vol. 51 No. 3 (2019)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.math.fund.sci.2019.51.3.3

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.
Co-Authors Ade Nur Istiqomah Agus Triono Puri Jatmiko Aprilia Aprilia Dhimaz Gilang Ramadhan Evan Irawan Akbar Hakim Luthfi Malasan Mochamad Irfan