Proper Motions of Young Stellar Outflows in the Mid-infrared with Spitzer (IRAC). I. The NGC 1333 Region

February 2013 • 2013AJ....145...28R

Authors • Raga, A. C. • Noriega-Crespo, A. • Carey, S. J. • Arce, H. G.

Abstract • We use two 4.5 μm Spitzer (IRAC) maps of the NGC 1333 region taken over a ~7 yr interval to determine proper motions of its associated outflows. This is a first successful attempt at obtaining proper motions of stellars' outflow from Spitzer observations. For the outflow formed by the Herbig-Haro objects HH7, 8, and 10, we find proper motions of ~9-13 km s^-1, which are consistent with previously determined optical proper motions of these objects. We determine proper motions for a total of eight outflows, ranging from ~10 to 100 km s^-1. The derived proper motions show that out of these eight outflows, three have tangential velocities <=20 km s^-1. This result shows that a large fraction of the observed outflows have low intrinsic velocities and that the low proper motions are not merely a projection effect.

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• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2013AJ....145...28R
• PDF https://iopscience.iop.org/article/10.1088/0004-6256/145/2/28/pdf
• PDF https://stacks.iop.org/1538-3881/145/28/pdf
• PREPRINT http://arxiv.org/abs/1211.0273
• DATA https://irsa.ipac.caltech.edu/bibdata/2013/R/2013AJ....145...28R.html
• ELECTR https://doi.org/10.1088%2F0004-6256%2F145%2F2%2F28