Constraints on disk sizes around young intermediate-mass stars: Nulling interferometric observations of herbig Ae objects

Philip M. Hinz, William F. Hoffmann, Joseph L. Hora

Research output: Contribution to journalArticle

17 Scopus citations


Physical models of circumstellar disks surrounding pre-main-sequence stars are currently constrained primarily by the spectral energy distribution of the system. Here we present first results from a survey of nearby Herbig Ae stars using nulling interferometry. We measure the spatial extent of the mid-IR emission for the stars HD 150193, HD 163296, and HD 179218. The results indicate that the size of mid-IR emission around Herbig Ae stars may be much smaller than current models predict. The observations constrain ∼90% of the 10 μm flux to be within an approximately 20 AU diameter region, providing significant spatial limits for disk models. These results demonstrate the scientific potential for nulling interferometry to study circumstellar disks with better spatial discernment than is possible with standard mid-IR imaging.

Original languageEnglish (US)
Pages (from-to)L131-L134
JournalAstrophysical Journal
Issue number1 PART 2
StatePublished - Nov 1 2001



  • Stars: individual (HD 150193, HD 163296, HD 179218)
  • Stars: pre-main-sequence
  • Techniques: interferometric

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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