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Sub-Millimetre Observations Of SiCC in IRC 10216

Published online by Cambridge University Press:  07 August 2017

L.W. Avery ,
T. Amano ,
M.B. Bell ,
P.A. Feldman ,
J.W.C. Johns ,
J.M. Macleod ,
H.E. Matthews ,
D.C. Morton ,
J.K.G. Watson  and
B.E. Turner
...Show all authors
L.W. Avery
Affiliation:
Herzberg Inst. of Astrophysics, NRC, Ottawa, K1A0R6, Canada
T. Amano
Affiliation:
Herzberg Inst. of Astrophysics, NRC, Ottawa, K1A0R6, Canada
M.B. Bell
Affiliation:
Herzberg Inst. of Astrophysics, NRC, Ottawa, K1A0R6, Canada
P.A. Feldman
Affiliation:
Herzberg Inst. of Astrophysics, NRC, Ottawa, K1A0R6, Canada
J.W.C. Johns
Affiliation:
Herzberg Inst. of Astrophysics, NRC, Ottawa, K1A0R6, Canada
J.M. Macleod
Affiliation:
Herzberg Inst. of Astrophysics, NRC, Ottawa, K1A0R6, Canada
H.E. Matthews
Affiliation:
Joint Astronomy Center, 665 Komohana St., Hilo, HI 96720, U.S.A.
D.C. Morton
Affiliation:
Herzberg Inst. of Astrophysics, NRC, Ottawa, K1A0R6, Canada
J.K.G. Watson
Affiliation:
Herzberg Inst. of Astrophysics, NRC, Ottawa, K1A0R6, Canada
B.E. Turner
Affiliation:
National Radio Astronomy Obs., Charlottesville, VA 22901, U.S.A.
S.S. Hayashi
Affiliation:
National Astronomical Obs., Osawa 2-chome, Mitaka, Tokyo 181, Japan
G.D. Watt
Affiliation:
Joint Astronomy Center, 665 Komohana St., Hilo, HI 96720, U.S.A.
A.S. Webster
Affiliation:
Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, Scotland

Abstract

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We have used the James Clerk Maxwell Telescope to observe 11 lines of SiCC with excitation energies up to 330 K above the ground state in IRC 10216. An excitation analysis indicates Trot = 43 ± 5 K within a given Ka ladder and Texc = 160 ± 50 K between Ka ladders. The column density of SiCC is estimated to be 3 × 1015 cm−2, more than an order of magnitude higher than previous estimates.

Type
Near Stellar Environments
Information
Symposium - International Astronomical Union , Volume 150: Astrochemistry of Cosmic Phenomena , 1992 , pp. 399 - 400
Copyright
Copyright © Kluwer 1992 

References

REFERENCES

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