Imaging the Haro 6-10 infrared companion

Chris D. Koresko, Geoffrey A. Blake, Michael E. Brown, Anneila I. Sargent, David W Koerner

Research output: Contribution to journalArticle

11 Scopus citations


We present an infrared imaging study of the low-mass pre-main-sequence binary system Haro 6-10. This system is one of a handful in which the optically visible primary has the characteristics of a normal T Tauri star, while the secondary is a so-called "infrared companion" (IRC), a strongly extincted object that emits most of its luminosity in the infrared. A speckle holographic technique was used to produce nearly diffraction-limited images on three nights over a 1 yr period starting in late 1997. The images show that the IRC is obscured and surrounded by a compact, irregular, and variable nebula. This structure is in striking contrast to the well-ordered edge-on disk associated with HK Tauri B, the extincted companion to another T Tauri star of similar age. A new, resolved intensity peak was found 0″.4 southwest of the IRC. We suggest that it may represent light scattered by a clump of dusty material illuminated by starlight escaping along an outflow-carved cavity in the IRC envelope. The primary star became fainter and the companion became more extended during the observing period.



  • Binaries: visual
  • Circumstellar matter
  • Methods: miscellaneous
  • Stars: individual (Haro 6-10)
  • Stars: pre-main-sequence

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Koresko, C. D., Blake, G. A., Brown, M. E., Sargent, A. I., & Koerner, D. W. (1999). Imaging the Haro 6-10 infrared companion. Astrophysical Journal, 525(1 PART 2).