Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21723205w&link_type=abstract
American Astronomical Society, AAS Meeting #217, #232.05; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
L1551 IRS5 is a multiple protostellar system showing two nearly parallel jets of ionized gas. The southern jet shows a peculiar bend at about 0.6? to the southwest of its driving source. One hypothesis to explain the bend jet is interaction of the two jets. In order to test the hypothesis, we compared the maps of the jet in 3 different epochs comprising 1994, 2002 and 2003. The 3.5cm continuum maps observed by Very Large Array with the Pie Town antenna reveal the intensity of the Southwest part of the southern jet increase from 1994 to 2002. Comparing epoch 2002 to 2003, the southwest part of the Southern jet keeps changing in intensity. Furthermore, an intensity change is found close to or at the location where jet bends. We don't see change anywhere even close to the source where the emission is strongest and any change easiest to detect. The position of the bending jet shows an increase in intensity, but the spatial position is the same. We are looking at different models for what could cause the observed changes.
Lim JaeDeok
Wing Leung Ka
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