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http://dx.doi.org/10.5303/PKAS.2010.25.1.023

OBSERVATIONAL TEST STUDY OF TRAO OUTER GALAXY SURVEY COMPARING TO FCRAO OUTER GALAXY SURVEY  

Lee, Y. (Korea Astronomy and Space Science Institute)
Jung, J.H. (Korea Astronomy and Space Science Institute)
Kang, H.W. (Korea Astronomy and Space Science Institute)
Lee, C.H. (Korea Astronomy and Space Science Institute)
Kim, H.G. (Korea Astronomy and Space Science Institute)
Kim, I.S (Korea Astronomy and Space Science Institute)
Kim, B.G. (Korea Astronomy and Space Science Institute)
Publication Information
Publications of The Korean Astronomical Society / v.25, no.1, 2010 , pp. 23-28 More about this Journal
Abstract
We present results of a test-study of the large-scale survey using the multi-beam receiver system recently installed on the 14 m telescope at Taeduk Radio Astronomy Observatory (TRAO). We have tested several modes of mapping, and found suitable (time-saving) mapping parameters of 'ON-SOURCE' = 8, 'OFF-SOURCE' = 1 when using 'RPT' = 3 as a position-switching mode. We observed 504 spectra towards the NGC 7538, a star forming molecular cloud in the transition of J = 1 - 0 of $^{12}CO$. From the Outer Galaxy Survey database (Heyer et al., 1998) we obtained 504 spectra for the same region. We compared integrated intensities, line profiles of two databases, and found that they are consistent to each other. From the intensity ratio of these two databases we also found that the value of forward spillover scattering of the TRAO telescope system is 0.58.
Keywords
survey; molecular cloud; interstellar medium; multi-beam receiver;
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