W49A - Ultracompact HII Regions

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About this Image

Views of the ultracompact (UC) HII regions in W49A with the full resolution of the VLA at 7 mm (beam =0.04") are inset in the 3.6 cm image of the W49A region. The 7 mm image includes data collected from the A, B, and D configurations of the VLA over the past 3 years. Note that at this resolution and observing frequency, source A reveals a central shell . Source B breaks into a multiplicity of distinct sources, with B1 having an elongated morphology, and B2 a central shell of its own. The horizontal bar in each inset frame indicates 5000 AU.

Investigator(s):  Chris De Pree, Miller Goss, Jack Welch, and David Wilner

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Technical Data

    Telescope VLA 
    Date of Observation 2001-00-00 
    Type of Observation Continuum Observations 
    Center of Image RA: 19:10:15.65, Dec: 09:06:5.50 (J2000)  
    Field of View 0.0125 x 0.0069 degrees  
    Technical Caption  

  • Astronomical database entries for W49A
    • Query SIMBAD for more W49A data


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