NRAO: National Radio Astronomy Observatory

About this Image

These images show the W49A star forming region in context. The top image (Haslam, C. G. T., Salter, C. J., Stoffel, H., & Wilson, W. E. 1982, Astron. Astrophys. Suppl. Ser., 47, 1) shows the location of W49A in the galactic plane. The middle image shows the 3.6 cm emission from W49A. The image indicates the presence of a large number of HII regions in a small region of the sky. W49A is perhaps the best galactic example of starburst phenomena. The bottom image shows a detail 7 mm image of the most highly obscured region in W49A. None of the regions visible at 7 mm are detected at infrared or optical wavelengths, being deeply embedded in a molecular cloud.

Investigator(s):  C. G. Depree

Alternate Resolutions

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This image is available in the following downloadable versions:

• 400 x 533 color JPEG
• 900 x 1200 color JPEG
• 2250 x 3000 color TIFF

If you would like to obtain a higher resolution version of this image, please contact Pat Smiley.

For More Information

• Visit related website http://bradley.agnesscott.edu/extreme
• Up one level for more info on Star_Forming_Regions
• For unfamiliar terms, visit the NRAO Radio Astronomy Glossary

Technical Data

Telescope	VLA
Date of Observation	1998-04-11
Type of Observation	Continuum Observations
Band	X
Wavelength	3.6 cm
Frequency	8.4 GHz
Center of Image	RA: 19:10:13.44, Dec: 09:06:29.20 (J2000)
Field of View	0.2333 x 0.2333 degrees
Technical Caption	These images show the W49A star forming region in context. The top image (Haslam, C. G. T., Salter, C. J., Stoffel, H., & Wilson, W. E. 1982, Astron. Astrophys. Suppl. Ser., 47, 1) shows the location of W49A in the galactic plane. The middle image shows the 3.6 cm emission from W49A. The image indicates the presence of a large number of HII regions in a small region of the sky. W49A is perhaps the best galactic example of starburst phenomena. The bottom image shows a detail 7 mm image of the most highly obscured region in W49A. None of the regions visible at 7 mm are detected at infrared or optical wavelengths, being deeply embedded in a molecular cloud.



Astronomical database entries for W49
• Query SIMBAD for more W49 data

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