University of Minnesota
School of Physics & Astronomy
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Michael S. Gordon

Massive Star Formation in the LMC. I. N159 and N160 Complexes
Gordon, Michael S.; Jones, Terry J.; Gehrz, Robert D.; Helton, L. Andrew, The Astrophysical Journal

Download from http://adsabs.harvard.edu/abs/2017ApJ...834..122G

Abstract

We present images and spectral energy distributions (SEDs) of massive young stellar objects (YSOs) in three star-forming H ii regions of the Large Magellanic Cloud: N159A, N159 Papillon, and N160. We use photometry from SOFIA/FORCAST at 25.3-37.1 μm to constrain model fits to the SEDs and determine luminosities, ages, and dust content of the embedded YSOs and their local environments. By placing these sources on mid-infrared color-magnitude and color-color diagrams, we analyze their dust properties and consider their evolutionary status. Since each object in the FORCAST images has an obvious bright near-infrared counterpart in Spitzer Space Telescope images, we do not find any evidence for new, very cool, previously undiscovered Class 0 YSOs. Additionally, based on its mid-infrared colors and model parameters, N159A is younger than N160 and the Papillon. The nature of the first extragalactic protostars in N159, P1, and P2, is also discussed.