The Determination of Galactic Arms from the Brightness Distribution of Far Infrared Sources

Tong Yi, Sun Jin, Li Zhong Yuan
1990 Symposium - International astronomical union  
From the IRAS catalogue we selected 10,001 young infrared (IR) sources which lie within the galactic plane. Their IR flux integrated over ±5° in latitude shows maxima at galactic longitudes l = 80°, 60°, 50°, 35°, −27°, −54°, and −74°, which directions are interpreted as tangents to the spiral arms. The resulting spiral arm pattern is nearly identical with the arms derived from observations of O and B stars.
doi:10.1017/s0074180900240539 fatcat:ci2smc756zgxbnru6nuznc6tya