Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-23T19:40:08.590Z Has data issue: false hasContentIssue false
  • English
  • Français

Millimeter-Wave Mapping of the W3 Core Region at 4 and 6.5 mm

Published online by Cambridge University Press:  04 August 2017

Kenji Akabane ,
Hisashi Hirabayashi  and
Yoshiaki Sofue
Kenji Akabane
Affiliation:
Nobeyama Radio Observatory, Minamimaki, Minamisaku, Nagano 384-13, Japan
Hisashi Hirabayashi
Affiliation:
Nobeyama Radio Observatory, Minamimaki, Minamisaku, Nagano 384-13, Japan
Yoshiaki Sofue
Affiliation:
Nobeyama Radio Observatory, Minamimaki, Minamisaku, Nagano 384-13, Japan

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Radio continuum observations of the core region of the compact H II region W3 at 6.5 and 4 mm wavelengths were made using the Nobeyama 45-m telescope. The 6.5-mm map agrees with lower-frequency maps, showing a major contribution of free-free H II emission. At 4 mm an excess over the H II emission is found, which indicates a contribution from dust grains. Comparing with sub-mm and FIR data, we suggest the existence of two dust components: normal dust at 50 K, and low-temperature (7 K), large-size grains (or interstellar “stones”) in the region west of the W3 core.

Type
I. Star Forming Processes in the Solar Neighborhood
Information
Symposium - International Astronomical Union , Volume 115: Star Forming Regions , 1987 , pp. 167 - 170
Copyright
Copyright © Reidel 1987 

References

Jaffe, D.T., Hildebrand, R.H., Keene, J., and Whitcomb, S.E.: 1983, Astrophys. J. 273, L89.Google Scholar
Schwartz, P.R.: 1982, Astrophys. J. 252, 589.CrossRefGoogle Scholar
Werner, M.W., Becklin, E.E., Gatley, I., Neugebauer, G., Sellgren, K., Thronson, H.A., Harper, D.A., Loewenstein, R., and Moseley, S.H.: 1980, Astrophys. J. 242, 601.Google Scholar
Westerbrook, W.E., Werner, M.W., Elias, J.H., Gezari, D.Y., Hauser, M.G., Lo, K.Y., and Neugebauer, G.: 1976, Astrophys. J. 209, 94.Google Scholar