Abstract
view Abstract Citations (39) References (19) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Formation of OB clusters : OH maser observations. Ho, P. T. P. ; Haschick, A. D. ; Vogel, S. N. ; Wright, M. C. H. Abstract Spectral line synthesis maps of six Class I OH masers associated with compact H II regions were made with the VLA. In general, the maser spots are closely associated with a single continuum condensation. We argue that this supports the idea that complicated H II regions such as G10.6-0.4 and G19.6-0.2 are in fact excited by a cluster of OB stars. In five out of our six cases, the OH masers are located at the edges of H II regions. This appears to support shock excitation by the expanding H II region as the dominant mechanism. However, observed velocity gradients may still be consistent with bound motions such as rotation or infall. Publication: The Astrophysical Journal Pub Date: February 1983 DOI: 10.1086/160675 Bibcode: 1983ApJ...265..295H Keywords: B Stars; Hydroxyl Emission; Interstellar Masers; O Stars; Star Clusters; Stellar Evolution; Astronomical Maps; H Ii Regions; High Resolution; Interstellar Matter; Molecular Clouds; Nebulae; Shock Waves; Stellar Spectrophotometry; Astrophysics full text sources ADS | data products SIMBAD (8)
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