Radio Imaging of the NGC 1333 IRAS 4B Region

Details Radio Imaging of the NGC 1333 IRAS 4B Region Radio Imaging of the NGC 1333 IRAS 4B Region

2011-09-23

arxiv.org/abs/1109.5026v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

To appear in the JKAS

Scientific paper

The NGC 1333 IRAS 4B region was observed in the 6.9 mm and 1.3 cm continuum with an angular resolution of about 0.4 arcseconds. IRAS 4BI was detected in both bands, and BII was detected in the 6.9 mm continuum only. The 1.3 cm source of BI seems to be a disk-like flattened structure with a size of about 50 AU. IRAS 4BI does not show any sign of multiplicity. Examinations of archival infrared images show that the dominating emission feature in this region is a bright peak in the southern outflow driven by BI, corresponding to the molecular hydrogen emission source HL 9a. Both BI and BII are undetectable in the mid-IR bands. The upper limit on the far-IR flux of IRAS 4BII suggests that it may be a very low luminosity young stellar object.

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