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Revista mexicana de astronomía y astrofísica

versão impressa ISSN 0185-1101


RODRIGUEZ, Luis F.; REIPURTH, Bo  e  CHIANG, Hsin-Fang. Radio continuum sources associated with the HH 92 and HH 34 Jets. Rev. mex. astron. astrofis [online]. 2014, vol.50, n.2, pp.285-291. ISSN 0185-1101.

We present high angular resolution, high sensitivity 8.46 GHz (3.6 cm) radio continuum observations made toward the core of the HH 92 outflow with the Very Large Array in 2002-2003 and with the Expanded Very Large Array in 2011. We detect a group of three compact sources distributed in a region 2" in extension and discuss their nature. We conclude that one of the objects (VLA 1) is the exciting source of the giant outflow associated with HH 92. In the case of HH 34 we present new 43.3 GHz (7 mm) observations that reveal the presence of a structure associated with the exciting source and elongated perpendicularly to the highly collimated optical jet in the region. We propose that this 7 mm source is a circumstellar disk with radius of ≈80 AU and mass of ≈0.21 Mʘ.

Palavras-chave : ISM [jets and outflows]; radio continuum [stars]; stars [formation]; stars [mass-loss].

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