Image Details
Caption: Figure 10.
1D Lyα signal profiles in which minor hydrocarbon absorption originates from C2H6 only (blue dashed line); C2H6 and C2H4 (orange dashed line); and C2H6, C2H4, and C2H2 (light-green dashed line). These profiles are compared with the original Lyα brightnesses (black line), which include all minor hydrocarbons and nitriles.
© 2026. The Author(s). Published by the American Astronomical Society.