Astronomy and Astrophysics – Astronomy
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21630907l&link_type=abstract
American Astronomical Society, AAS Meeting #216, #309.07; Bulletin of the American Astronomical Society, Vol. 41, p.872
Astronomy and Astrophysics
Astronomy
Scientific paper
We present observations of the distribution of long carbon chain molecules in TMC-1. The molecular line intensities for three cyanopolyyne molecules HC5N,HC7N and HC9N were observed in a 25' diameter region. The four molecular line transitions were observed towards TMC-1 using the Robert C. Byrd Green Bank Telescope (GBT). These observations were made simultaneously in the frequency range 12780 to 13540 MHz. The images show the emission is primarily in along a narrow ridge. We present images of the molecular line intensity as a function of position, and compare the locations of peak molecular emission. Near the location of peak line intensity, the emission is well fit by a Gaussian profile. We present the ratio of molecular line intensities for the three species.
Given the consistency of structure and peak location, we conclude that these cyanopolyynes have nearly the same chemical age.
In addition, if all goes well, we will also present first results form the GBT 18 to 26 GHz Focal Plane Array receiver.
Langston Glen
Mennicke Christine
Woolard Kyle
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