The suggestion at the time was the correlation was due to free-free or Bremsstrahlung emission from ionized gas caused by young hot stars which are formed in these dusty regions.
Monkey Dust | Dust Bowl | Chuckles Bites the Dust | Red Dust | Dust in the Wind | Daughters of the Dust | Blossoms in the Dust | A Handful of Dust | The Dust Diaries | Spinning mule | Ring spinning | Red Dust (novel) | Red Dust (2004 film) | Intruder in the Dust | House dust mite | Flags in the Dust | Dust storm | Dust Muhammad | Dust & Illusions | Dust Brothers | dust | Cosmic dust | Another One Bites The Dust | The Dust Factory | spinning dust | Spinning Around | Sea of Dust (Greyhawk) | Love Is Love/Return to Dust | Intruder in the Dust (1949 film) | Gold Dust Twins |
It shows a curious ring structure in maps made by the IRAS and MSX satellites and the Spitzer Space Telescope and has recently detected by the COSMOSOMAS at microwave frequencies as a source of anomalous "spinning dust" emission.