The decrease of the flux shown by the arrow indicates the absorption of light by thorium ions at the surface of the star; i.e., the stronger feature means a higher abundance of thorium.
The decrease of the flux shown by the arrow indicates the absorption of light by thorium ions at the surface of the star; i.e., the stronger feature means a higher abundance of thorium.
下降的通量显示箭头表明对光的吸收钍离子表面该星;即较强的特点,手段更高丰富的钍.