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Wu, Y-L; Close, L M; Males, J R; Follette, K; Morzinski, K; KOPON, D; RODIGAS, T J; Hinz, P; Puglisi, A; Esposito, S; Pinna, E; Riccardi, A; Xompero, M; Briguglio, R
The Astrophysical journal, 09/2013, Letnik: 774, Številka: 1Journal Article
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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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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