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arXiv · 1308.4144

High Resolution H alpha Images of the Binary Low-mass Proplyd LV 1 with the Magellan AO System

Y. -L. Wu·L. M. Close·J. R. Males·K. Follette·K. Morzinski·D. Kopon·T. J. Rodigas·P. Hinz·A. Puglisi·S. Esposito·E. Pinna·A. Riccardi·M. Xompero·R. Briguglio
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Abstract

We utilize the new Magellan adaptive optics system (MagAO) to image the binary proplyd LV 1 in the Orion Trapezium at H alpha. This is among the first AO results in visible wavelengths. The H alpha image clearly shows the ionization fronts, the interproplyd shell, and the cometary tails. Our astrometric measurements find no significant relative motion between components over ~18 yr, implying that LV 1 is a low-mass system. We also analyze Large Binocular Telescope AO observations, and find a point source which may be the embedded protostar's photosphere in the continuum. Converting the H magnitudes to mass, we show that the LV 1 binary may consist of one very-low-mass star with a likely brown dwarf secondary, or even plausibly a double brown dwarf. Finally, the magnetopause of the minor proplyd is estimated to have a radius of 110 AU, consistent with the location of the bow shock seen in H alpha.

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Y. -L. Wu, L. M. Close, J. R. Males, K. Follette, K. Morzinski, D. Kopon, T. J. Rodigas, P. Hinz, A. Puglisi, S. Esposito, E. Pinna, A. Riccardi, M. Xompero, R. Briguglio. 2013-08-19. High Resolution H alpha Images of the Binary Low-mass Proplyd LV 1 with the Magellan AO System. https://doi.org/10.1088/0004-637x%2F774%2F1%2F45

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