Other
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007acasn..48..289w&link_type=abstract
Acta Astronomica Sinica, vol. 48, no. 3, p. 289-301
Other
Stars: Formation, Ism: Lines, Ism: Abundance
Scientific paper
This paper reports 13CO,C18O, HCO+ (J=1-0) line observations toward IRAS 23133+6050 with the 13.7m millimeter-wave telescope at Qinghai Station of PMO. The sizes of the cores corresponding to 13CO,C18O, HCO+ line emissions are 4.0pc, 2.1pc, 2.3pc; the virial masses are 2.7×;10^3 M&sun;, 0.9103 M&sun;,2.3103 M&sun; ;the volume densities of H2 are 2.7×10^3 cm-3, 5.1×10^3 cm-3, 4.6×10^3 cm-3. Using a power-law function of n(r)~ r-p, the spatial density structure of the core has been studied. The indices are 1.75, 1.56, 1.48 for 13CO,C18O, HCO+ . The indices become flat gradually from the outside to the inner core. The abundance of HCO+ is 4.6×10^-10, 1 magnitude less than the value of DMCs, slightly less than the value of GMCs. The abundance ratio of 13CO/C18O is 12.2, comparable with the value of 11.8 for DMCs, and 9.0~15.6 for GMCs. A bipolar 13CO molecular outflow is found toward this area .The abundance of HCO+ in the area of outflow is not higher than other area. The ratios of the IRAS FIR luminosity to virial mass are 18.1, 51.1 and 21.2 respectively.
Geng Tao
Wang Yang J. M.
Zhu Liu-Bin
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