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A multifrequency study of the active star forming region NGC 6357

Published online by Cambridge University Press:  01 August 2006

C. E. Cappa ,
R. H. Barbá ,
M. Arnal ,
N. Duronea ,
E. Fernández Lajús ,
W. M. Goss  and
J. Vasquez
C. E. Cappa
Affiliation:
Facultad de Ciencias Astronómicas y Geofisicas, UNLP, Argentina Instituto Argentino de Radioastronomía, Argentina
R. H. Barbá
Affiliation:
Departamento de Física, Universidad de La Serena, Chile
M. Arnal
Affiliation:
Facultad de Ciencias Astronómicas y Geofisicas, UNLP, Argentina Instituto Argentino de Radioastronomía, Argentina
N. Duronea
Affiliation:
Instituto Argentino de Radioastronomía, Argentina
E. Fernández Lajús
Affiliation:
Facultad de Ciencias Astronómicas y Geofisicas, UNLP, Argentina
W. M. Goss
Affiliation:
NRAO, Socorro, USA
J. Vasquez
Affiliation:
Instituto Argentino de Radioastronomía, Argentina
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To investigate the interaction of the massive stars with the gas and dust in the active star forming region NGC 6357, located in the Sagittarius spiral arm at a distance of 1.7-2.6 kpc (Massey et al. 2001), we analyzed the distribution of the neutral and ionized gas, and that of the dust, based on Hα, [OIII] and [SII] images obtained with the Curtis-Schmidt telescope at CTIO, radio continuum observations at 1.465 MHz obtained with the Very Large Array (NRAO) in the DnC configuration (synthesized beam = 38″), Hi data from the Parkes survey (angular resolution = 15′), CO(1-0) observations obtained with the Nanten radiotelescope at Las Campanas Observatory (angular resolution = 2.7′), and IR images in the four MSX bands (angular resolution = 18.3″).

Keywords

ISM: HII regions – ISM: individual (NGC6357) – ISM: bubbles
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S237: Triggered Star Formation in a Turbulent ISM , August 2006 , pp. 400
Copyright
Copyright © International Astronomical Union 2007

References

Felli, M., Persi, P., Roth, M. et al. 1990, A&A 232, 477Google Scholar
Massey, P., DeGioia-Eastwood, K. & Waterhouse, E. 2001, AJ 121, 1050Google Scholar
Persi, P., Ferrari-Toniolo, M.Roth, M. & Tapia, M. 1986, A&A 170, 97Google Scholar