High Resolution H alpha Images of the Binary Low-mass Proplyd LV 1 with the Magellan AO System
| Autor: | Ya-Lin Wu, Timothy J. Rodigas, Derek Kopon, Simone Esposito, Katherine B. Follette, Marco Xompero, K. M. Morzinski, Armando Riccardi, Jared R. Males, Runa Briguglio, Enrico Pinna, Alfio Puglisi, Philip M. Hinz, Laird M. Close |
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| Rok vydání: | 2013 |
| Předmět: |
Physics
Earth and Planetary Astrophysics (astro-ph.EP) Photosphere Brown dwarf Balmer series FOS: Physical sciences Astronomy and Astrophysics Large Binocular Telescope Radius Astrophysics symbols.namesake Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science symbols Protostar Bow shock (aerodynamics) Low Mass Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics - Earth and Planetary Astrophysics |
| DOI: | 10.48550/arxiv.1308.4144 |
| Popis: | 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. Comment: 12 pages, 3 figures. Published in Astrophysical Journal |
| Databáze: | OpenAIRE |
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