Spectral Line Asymmetry of Arcturus

被引：1
|
作者：
Razelan, M. M. [1 ]
Said, N. M. M. [1 ]
Chong, H. Y. [1 ]
Aziz, A. H. A. [1 ]
Zainuddin, M. Z. [2 ]
机构：
[1] Univ Sci Malaysia, Sch Phys, George Town 11800, Malaysia
[2] Univ Malaya, Dept Phys, Fac Sci, Kuala Lumpur 50603, Malaysia
来源：
NATIONAL PHYSICS CONFERENCE 2014 (PERFIK 2014) | 2015年 / 1657卷
关键词：
Arcturus; granulation; bisector method;
D O I：
10.1063/1.4915184
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Spectral line asymmetry is a signature of granulation in the stellar photosphere. Asymmetries are useful in providing information on photospheric velocity fields. In this paper, we will discuss about the spectral line profile asymmetries of Arcturus (alpha Bootes) based on the archive data taken from Ritter Observatory. From the analysis of line asymmetries of this star using the bisector method, we obtain variations of the shape of line asymmetries and the granulation velocities. The cause of these variations will be discussed.
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页数：3
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