High-Resolution H 13CO + Observations toward the Driving Source of the HH 1-2 System

Details High-Resolution H 13CO + Observations toward the Driving Source of the HH 1-2 System High-Resolution H 13CO + Observations toward the Driving Source of the HH 1-2 System

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...498l..71c&link_type=abstract

Astrophysical Journal Letters v.498, p.L71

Astronomy and Astrophysics

Astronomy

5

Ism: Individual Alphanumeric: Hh 1-2, Ism: Molecules, Ism: Structure, Stars: Formation

Scientific paper

We observed the H 13 CO ^{+} J=1-->0 line toward the driving source of the Herbig-Haro object HH 1-2 system using the Berkeley-Illinois-Maryland Association interferometer and the Taeduk Radio Astronomy Observatory telescope. Our map shows a 37" (0.08 pc) scale elongation around VLA 2 and a bulge around VLA 1. The elongation is nearly perpendicular to the HH 1-2 axis as previously observed in the HCO ^{+} 4 --> 3 line. We suggest that this molecular core is a toroidal structure around a newly formed star. While VLA 1 has been considered the central object of the system, because of its higher brightness, our map shows that VLA 2 is more closely associated with the molecular core.

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