HIGH-RESOLUTION INFRARED OBSERVATIONS OF GGD-27

We present new high spatial resolution data of the GGD 27 complex, obt ained both by speckle interferometry and by lunar occultation observat ions. Additionally, we performed imaging in the wavelength intervals 8 -9 mu m and 10-13 mu m. The combination of these data with earlier VLA radio maps of Marti, Rodriguez, & Reipurth yields new hints on the na ture of IRS 7. It also confirms the interpretation by Aspin et al. tha t their GGD 27 ILL is the illuminator of the reflection nebula north o f IRS 2 as well as of IRS 2 itself. By using precise astrometric calib ration, we show that IRS 7 is detected at all three wavelengths and pr esumably is an embedded B2 star. IRS 1 and IRS 17 still appear pointli ke in the K band, although the 8.5 mu m data indicate some extended em ission around IRS 1, which is presumably caused by heated dust. Other objects in the region targeted by lunar occultation observations, such as HL 17, HL 47 (from Hartigan & Lada) and a hitherto anonymous star, hereafter denoted star 11, also appear pointlike in the K' band. Thes e data complete our picture of the formation of massive stars in the r egion of GGD 27.