Abstract
The faint nebulosity CM24=PP85 listed by Parsamian and Petrosian (1979) was observed at infrared (1-10 pm) and radio (6 cm and CO line) wavelengths in the vicinity of the CO "hot spot" reported by Torrelles et al. (1983). The radio continuum (6 cm) emission from a spherically symmetrical HIl region was detected with the Very Large Array. Its position coincides with the brightest part of the visible nebulosity and a 1-4 pm emission peak. Our infrared maps made at the Observatorio Astronomico Nacional de San Pedro Martir, show two additional (1-10 pm) peaks located at distances - 30 arc sec from the compact HII region, all surrounded by extended near infrared (1-4 pm) emission. A detailed CO (J=1 0) map of the whole molecular cloud was also obtained with the University of Texas Millimeter - Wave Telescope. Our results are interpreted in terms of the recent formation of three massive stars, one of which, having developed an HII region, is at a slightly later phase of its evolution. The extended near infrared emission may arise in a reflection nebula similar to NCC 7538-Irs 9 (Werner et al.,1979); Tokunaga et al.,1981). The details of the present work will be published at a later date.
