About this Image

The W49A B and D regions as imaged at 7 mm with the VLA. Insets show the integrated H52alpha radio recombination line flux toward sources B1 and D. A combination of imaging spectroscopy and multi-frequency observations to determine continuum spectral indices can effectively identify the youngest of the UC HII regions in a massive star forming cluster.

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

Alternate Resolutions

Help

This image is available in the following downloadable versions:

• 624 x 428 color JPEG
• 1094 x 750 color JPEG
• 2762 x 1894 color TIFF

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

For More Information

• Read the Journal article
• Read the NRAO Newsletter article
• 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	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	0.0008 x 0.0008 degrees
Technical Caption



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

---

SEARCH THE IMAGE GALLERY To search the Image Gallery for other images of W49A, click the Submit button. Object Name Show Results As: Thumbnails List To search the Image Gallery for similar images, click the Submit button. Category Sub-Category Telescope Mode Show Results As: Any Galaxy AGN Galactic_Sources Solar_System Miscellaneous Telescopes Historical Any Black Holes Galactic Center Galactic Halo Planetary Nebula Pulsars/Neutron Stars Supernova Supernova Remnants Stars Star Forming Regions Any GBT VLA VLBA ALMA 12 m 140 ft Any Continuum Spectral Line Thumbnails List For more search options, please use our Advanced Search form.