Imaging the Haro 6-10 infrared companion

We present an infrared imaging study of the row-mass pre-main-sequence bina ry system Hare 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 th e secondary is a so-called "infrared companion" (IRC), a strongly extincted object that emits most of its luminosity in the infrared. A speckle hologr aphic technique was used to produce nearly diffraction-limited images on th ree nights over a 1 yr period starting in late 1997. The images show that t he IRC is obscured and surrounded by a compact, irregular, and variable neb ula. This structure is in striking contrast to the well-ordered edge-on dis k associated with HK Tauri B, the extincted companion to another T Tauri st ar 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 c avity in the IRC envelope. The primary star became fainter and the companio n became more extended during the observing period.