Spitzer 8 μm image of the cometary globule G287.84-0.82. One can see three tails extending to the south from the head part of the globule. All tails point away from η Car and the O stars in Trumpler 16, which are to the northwest of the globule, see Fig. 1. The internal PDR, illuminated by CPD −59°2661 in the Treasure Chest cluster, is seen as a bright semi-shell in the northern part of the image. A secondary pillar, which we call the “duck head”, is west of the Treasure Chest cluster. It also has an embedded young star in the head. Faint foreground PDR emission is seen all around the globule, especially to the north. We have marked the position of CPD −59°2661 and Hen 3-485. The two dashed lines indicate the cuts for position–velocity plots discussed later in the text. The extraction positions of spectra discussed in Sect. 3 are labeled 1–8.
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