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A Spectral Line Survey of IRAS 17470-2853 from 86.1 to 92.1 GHz

  • Hun-Dae Kim (a1), Ramesh Balasubramanyam (a1) and Michael G. Burton (a1) (a2)
Abstract
Abstract

We present results from a spectral line survey of the young stellar object IRAS 17470-2853, undertaken to examine chemical changes during the evolution from hot molecular cores to ultracompact HII regions. Observations were carried out with the Mopra 22 m radio telescope in the frequency range from 86.1 to 92.1 GHz. A total of 21 lines from 9 molecules were detected. Except for CH3CN they are all simple molecules. We compare the results to the ultracompact HII region G34.3+0.15, where spectral line surveys in the frequency range 80–115 GHz and 330–360 GHz have been performed. While the molecular lines detected are similar, their widths and intensities are somewhat narrower and lower, respectively, in IRAS 17470-2853. The typical line width of ˜5 km s−1 indicates relatively quiet or quasi-thermal emission. On the other hand, a significant difference in T A* (HNC)/T A*(HCN) has been found: 0.8 for IRAS 17470-2853 compared to 2.6 for G34.3+0.15. The broad line width of SiO (υ=0, J=2–1), ˜9 km s−1, suggests that IRAS 17470-2853 is experiencing a shock generated by the embedded object. Column densities, or lower limits to them, are derived for observed molecules.

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BaudryA., CombesM., PeraultM., & DickmanR. 1980, A&A, 85, 244
BlakeG. A., SuttonE. C., MassonC. R., & PhillipsT. G. 1986, ApJS, 60, 357
BlakeG. A., SuttonE. C., MassonC. R., & PhillipsT. G. 1987, ApJ, 315, 621
BlakeG. A., MundyL. G., CarlstromJ. E., PadinS., ScottS. L., ScovilleN. Z., & WoodyD. P. 1996, ApJ, 472, 49
BrownR. D., BurdenF. R., & CunoA. 1989, ApJ, 347, 855
CernicharoJ., CastetsA., DuvertG., & GuilloteauS. 1984, A&A, 139, L13
CharnleyS. B., KressM. E., TielensA. G. G. M., & MillarT. J. 1995, ApJ, 448, 232
CumminsS. E., LinkeR. A., & ThaddeusP. 1986, APJ, 60, 819
ForsterJ. R., & CaswellJ. L. 1999, A&AS, 137, 43
GarwoodR. W., & McMullinJ. P. 1999, AIPS++ NOTE 225–Using Dish: The AIPS++ Single Dish Analysis Environment, http://aips2.nrao.edu/docs/aips++.html
GoldsmithF. P., LangerW. D., EllderJ., IrvineW., & KollbergE. 1981, ApJ, 249, 524
HenkelC., MauersbergerR., WilsonT. L., SnyderL. E., MentenK., & WouterlootJ. G. A. 1987, A&A, 182, 299
HerbstE., AdamsN. G., & SmithD. 1987, ApJ, 312, 351
HerbstE., & LeungC. M. 1990, A&A, 233, 177
HuntressW. T. 1977, ApJS, 33, 495
HuttemeisterS., HenkelC., MauersbergerR., BrouilletN., WiklindT., & MillarT. J. 1995, A&A, 295, 571
IrvineW. I., & SchloerbF. P. 1984, ApJ, 282, 516
JewellP. R., HollisJ. M., LovasF. J., & SnyderL. E. 1989, ApJS, 70, 833
JohanssonL. E. B., et al. 1984, A&A, 130, 227
KimH.-D., ChoS.-H., ChungH.-S., KimH.-R., RohD.-G., KimH.-G., MinhY. C., & MinnY.-K. 2000, ApJS, 131, 483
LorenR. B., & MundyL. G. 1984, ApJ, 286, 232
LovasF. J. 1992, JPCRD, 21, 181
MacdonaldG. H., GibbA. G., HarbingR. J., & MillarT. J. 1996, A&AS, 119, 333
MauersbergerR., HenkelC., WalmsleyC. M., SageL. J., & WiklindT. 1991, A&A, 247, 307
MillarT. J., HerbstE., & CharnleyS. B. 1991, A&A, 369, 147
MillarT. J., MacdonaldG. H., & GibbA. G. 1997, A&A, 325, 1163
OlmiL., CesaroniR., & WalmsleyC. M. 1993, A&A, 276, 489
SchilkeP., WalmsleyC. M., Pineau des ForetsG., RoueffE., FlowerD. R., & GuilloteauG. 1992, A&A, 256, 595
SchilkeP., GroesbeckT. D., BlakeG. A., & PhillipsT. G. 1997, ApJS, 108, 301
SuttonE. C., JaminetP. A., DanchiW. C., & BlakeG. A. 1991, ApJS, 77, 255
TakanoS., et al. 1998, A&A, 329, 1156
TurnerB. E. 1989, ApJS, 70, 539
TurnerB. E. 1991, ApJS, 76, 617
UlichB. L., & HaasR. W. 1976, ApJS, 30, 247
WalmsleyC. M., HersenW., HenkelC., MauersbergerR., & WilsonT. L. 1987, A&A, 172, 311
WalshA. J., HylandA. R., RobinsonG., & BurtonM. G. 1997, A&A, 291, 261
WalshA. J., BurtonM. G., HylandA. R., & RobinsonG. 1998, A&A, 301, 640
WalshA. J., MacdonaldG. H., AlveyN. P. S., BurtonM. G., & LeeJ.-K. 2002, A&A, submitted
WoottenA., Evans IIN. J., SnellR., & Vanden BoutP. 1978, ApJ, 225, L143
WoottenA., BozyanE. P., & GarrettD. B. 1980, ApJ, 239, 844
ZiurysL. M., & McGonagleD. 1993, ApJS, 89, 155
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