JpGU-AGU Joint Meeting 2020

Presentation information

[J] Poster

O (Public ) » Public

[O-04] Poster presentations by senior high school students

convener:Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute), Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Miwa Kuri(Japan Meteorological Agency), Keiko Konya(Japan Agency for Marine-Earth Science and Technology)

[O04-P30] Classification of Herbig Ae/Be Stars by Spectroscopic Observations

*Aika Koyama1, *Riko Iida1, *Hazuki Ueyama1 (1.Nara Prefectural Seisho High School)

Keywords:Pre-main-sequence Star, T Tauri Star, Equivalent Width

Both T Tauri Stars and Herbig Ae/Be Stars are pre-main-sequence stars and it is known that T Tauri Stars are classified into two types based on their 10Å equivalent width of Hα emission lines. However, there has been no classification of Herbig Ae/Be Stars based on their emission line. We set our goal to determine the standard value and classify Herbig Ae/Be Stars according to their equivalent width of Hα emission lines.
First, the spectrum chart of Herbig Ae/Be Stars were collected from observations at Bisei Astronomical Observatory and from the European Southern Observatory website. After that, the stars’ equivalent width of the Hα emission line were calculated using “Microsoft Excel”.
We discussed about the standard value which classify the HerbigAe/Be Stars from three different viewpoints. As a result, the standard was concluded to be 25Å equivalent width.
This work may prove useful for future research into pre-main-sequence stars.