Large Area Mappings of Formaldehyde at 6-cm toward Giant Molecular Clouds

Details Large Area Mappings of Formaldehyde at 6-cm toward Giant Molecular Clouds Large Area Mappings of Formaldehyde at 6-cm toward Giant Molecular Clouds

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..280p.154e&link_type=abstract

The Molecular Universe, Posters from the proceedings of the 280th Symposium of the International Astronomical Union held in Tole

Astronomy and Astrophysics

Astronomy

Scientific paper

We have large area mapped H2CO and H110α lines at 4.8GHz toward four Giant molecular clouds using the Nanshan 25-m radio telescope. We detect and gain firstly many H2CO and H110α lines at the four GMCs. We overlaid H2CO contours with CO contours (from 1.2-m CfA telescope) and 8.28 μm MSX colorscale map and found that three cores are well centered on some position. By analyzing width and intensity, we find that there exists good correlation between H2CO absorption line and CO emission line, and that they trace the same ambient physical condition of star formation region. A statistical diagram is presented shows that 85.21% of H2CO absorption lines are distributed in the restriction range of intensity < 1.0 Jy and 1.206 km/s < Δ V <5 km/s.

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