Fitting Spectral Energy Distributions of Protostars in the Taurus Star-Forming Region

Astronomy and Astrophysics – Astronomy

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Scientific paper

We present data for the brightest far-infrared objects in the Taurus star-forming region comprising a sample of eighty sources. We fit observed spectral energy distributions (SEDs) of the embedded population from the Taurus Spitzer Legacy Survey using a grid of pre-computed model SEDs. Our 70 micron flux-limited sample is above 0.6 Jy, and is comprised of 67 young stellar objects (26 Class I, 12 Flat Spectrum, 26 Class II, 3 Class III), 10 galaxies, and 3 miscellaneous objects (a planetary nebula, carbon star, and background giant). The criterion for this sample is biased toward the selection of protostars since excess emission in the far-infrared is indicative of the dust enshrouding embedded sources. Fainter 70 micron objects in the Taurus Spitzer Legacy data set are predominately background galaxies. The observed SEDs are fit using the YSO model SED grid from Robitaille et al., 2007, computed using a Monte-Carlo radiation transfer code from Whitney et al., 2003. Updated constraints on the parameters involved in low-mass star formation theory are presented.

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