First AU-scale observations of V1647 Orionis with VLTI/MIDI

P. Ábrahám, L. Mosoni, Th Henning, Á Kóspál, Ch Leinert, S. P. Quanz, Th Ratzka

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19 Citations (Scopus)


The young eruptive star V1647 Ori was observed with MIDI, the mid-infrared interferometric instrument at the Very Large Telescope Interferometer (VLTI), on March 2, 2005. We present the first spectrally resolved interferometric visibility points for this object. Our results show that (1) the mid-infrared emitting region is extended, having a size of ≈7 AU at 10pm; (2) no signatures of a close companion can be seen; (3) the 8-13μm spectrum exhibits no obvious spectral features. Comparison with similar observations of Herbig Ae stars suggests that V1647 Ori probably possesses a disk of moderate flaring. A simple disk model with T ∼ r-0.53, ∑ ∼ r-1.5, Md = 0.05 M is able to fit both the spectral energy distribution and the observed visibility values simultaneously.

Original languageEnglish
Pages (from-to)L13-L16
JournalAstronomy and Astrophysics
Issue number2
Publication statusPublished - Apr 1 2006


  • Infrared: stars
  • Stars: circumstellar matter
  • Stars: formation
  • Stars: individual: V1647 Ori
  • Techniques: interferometric

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Ábrahám, P., Mosoni, L., Henning, T., Kóspál, Á., Leinert, C., Quanz, S. P., & Ratzka, T. (2006). First AU-scale observations of V1647 Orionis with VLTI/MIDI. Astronomy and Astrophysics, 449(2), L13-L16.