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Gemini, SOFIA, and ATCA Reveal Very Young, Massive Protostars in the Collapsing Molecular Cloud BYF 73

  • Authors: Rebecca L. Pitts, Peter J. Barnes, Stuart D. Ryder, and Dan Li

2018 The Astrophysical Journal Letters 867 L7.

  • Provider: AAS Journals

Caption: Figure 2.

Identifications of point sources 1–8 detected in part of the ∼1′ wide Gemini-South/T-ReCS mosaic. This composite image has colors (Qa = red, Si6 = green, Si2 = blue) indicating true flux ratio differences between these bands, and is overlaid by ATCA 3 mm continuum contours (magenta, from 14 mJy/bm spaced by 6 mJy/bm = 1σ) and the same far-infrared (FIR) contours as in Figure 1. The “dark” sources are negative images of the bright ones, due to the ﹩15^{\prime\prime} ﹩ chop-throw between the target and reference positions in the telescope observing mode. Sources MIR 1, 2, and 5–7 were imaged in all three positions, and so appear as bright objects, flanked ﹩15^{\prime\prime} ﹩ to the N and S by dark images. Sources MIR 4, 8, and 3 (barely) were imaged in the target and one reference position.

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