SIMBAD references

Star complexes are huge aggregates of stars and gas which are considered as the largest cells of star formation in spiral galaxies (Efremov 1988, Stellar Complexes, Harwood Publ., London). Basic observational data on star complexes are presented with a special emphasis on their rotational properties. A possible model of the formation of star complexes and the origin of their spin momentum is discussed based on the physics of non-linear supersonic gas dynamics effects in the interstellar medium.