High resolution Hα 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

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

We utilize the new Magellan adaptive optics system (MagAO) to image the binary proplyd LV 1 in the Orion Trapezium at Hα. This is among the first AO results in visible wavelengths. The Hα 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 Hα.

Original languageEnglish (US)
Article number45
JournalAstrophysical Journal
Volume774
Issue number1
DOIs
StatePublished - Sep 1 2013

Keywords

  • ISM: individual objects (Orion Nebula)
  • binaries: general
  • circumstellar matter
  • instrumentation: adaptive optics
  • protoplanetary disks
  • stars: formation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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