Radio and infrared recombination studies of the southern massive star-forming region G333.6-0.2

Abstract

We present high spatial resolution radio and near-infrared hydrogen recombination line observations of the southern massive star-forming region G333.6-0.2. The 3.4-cm continuum peak is found slightly offset from the infrared source. The H90alpha spectra show for the first time a double peak profile at some positions. The complex velocity structure may be accounted for by champagne outflows, which may also explain the offset between the radio and infrared sources. The 2.17-um Brackett gamma image and H90alpha map are combined to construct an extinction map which shows a trend probably set by the blister nature of the HII region. The total number of Lyman continuum photons in the central 50-arcsec is estimated to be equivalent to that emitted by up to 19 O7V stars.

13 pages, 10 figures, to be published in MNRAS

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• A new calibration of stellar parameters of Galactic O stars
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Cited by in corpus (14)

• The Massive Star-forming Regions Omnibus X-ray Catalog
• Molecular line mapping of the giant molecular cloud associated with RCW 106 - III. Multi-molecular line mapping
• High-resolution APEX/LAsMA ${}^{12}$CO and ${}^{13}$CO (3-2) observation of the G333 giant molecular cloud complex : I. Evidence for gravitational acceleration in hub-filament systems
• MALT-45: A 7 mm survey of the southern Galaxy - I. Techniques and spectral line data
• The Three-mm Ultimate Mopra Milky Way Survey. II. Cloud and Star Formation Near the Filamentary Ministarburst RCW 106
• ALMA-IMF. VII. First release of the full spectral line cubes: Core kinematics traced by DCN J=(3-2)
• MALT-45: A 7mm survey of the southern Galaxy - II. ATCA follow-up observations of 44GHz class I methanol masers
• Tracing H2 column density with atomic carbon (CI) and CO isotopologues
• The influence of continuum radiation fields on hydrogen radio recombination lines
• Infall, outflow, and turbulence in massive star-forming cores in the G333 giant molecular cloud
• Properties of active galactic star-forming regions probed by imaging spectroscopy with the Fourier transform spectrometer (FTS) onboard AKARI
• Radiatively driven Rayleigh-Taylor instability candidates around a forming massive star system: NACO adaptive optics and VISIR study of G333.6-0.2
• Molecular line mapping of the giant molecular cloud associated with RCW 106 - IV. Ammonia towards dust emission
• The ionizing sources of luminous compact HII regions in the RCW106 and RCW122 clouds