H II Region ·
Ionized Hydrogen
un
seel
.com · Stromgren sphere · H-alpha · forbidden lines
Star
O6 · 39,000 K
R
S
— ly
Stage
—
Hot O/B star (UV)
Ionized H (H-alpha)
Forbidden [O III]
Neutral cloud
▶ Play
←
→
Unmute
Reset
Un
seel
.com · H II Region