Neutral Gas Disk of the Milky Way

https://www.nrao.edu/archives/plugins/Dropbox/files/HydrogenSky_VR87_hi.jpg

Description

This figure shows the distribution of atomic hydrogen at all locations in the sky. All of this hydrogen is in our galaxy. Red indicates directions of high hydrogen density, blue and black show areas with little hydrogen. The figure is centered on the galactic center and galactic longitude increases to the left. The data came from measurements of the 21cm line of hydrogen by radio telescopes. Some of the hydrogen loops outline old supernova remnants. This image is a composite from many 21cm surveys. It includes data from the NRAO Green Bank, West Virginia 140- foot and 300-foot telescopes, the 85-foot Hat Creek Telescope of The University of California at Berkeley, The AT&T Bell-Labs Horn-Reflector Telescope at Holmdel, New Jersey and The 60-foot Telescope at the Parkes Radio Observatory in Australia.

Creator

Legacy Astronomical Images

Rights

NRAO/AUI/NSF does not hold full copyright for this image. Contact the archivist for details.

Type

Legacy Astronomical Image

Object Name

Milky Way

Investigators

J.M. Dickey, F.J. Lockman

Telescope

140 Foot Telescope
300 Foot Telescope
Hat Creek Telescope
Horn-Reflector Telescopes
60 Foot Parkes Telescope

Type of Observation

spectral line

Wavelength

21 cm

Frequency

1420.4 MHz

Species

HI

Center of Image

RA 26:0:0.000, Dec: 0:0:0.000

Field of View

360.000000 x 360.000000 degrees

Link to journal article

Notes

Contact the archivist for a high resolution tif of this image.

Series

Galaxies Series

Unit

Spiral Unit

Citation

Legacy Astronomical Images, “Neutral Gas Disk of the Milky Way,” NRAO Archives, accessed December 3, 2021, https://www.nrao.edu/archives/items/show/33582.