Hydrogen Halo

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

Description

Using the Green Bank Telescope, a cross-section of the Milky Way Galaxy's diffuse halo of hydrogen gas has been produced. This image confirms the presence of discrete hydrogen clouds in the halo, and could help astronomers understand the origin and evoulution of the rarefied atmosphere that surrounds our Galaxy. The hydrogen in the lower halo, the transition zone between the Milky Way and intergalactic space, is very clumpy. This latest data confirm these results and show that instead of trailing away smoothly from the Galactic plane, a significant fraction of the hydrogen gas in the halo is concentrated in discrete clouds. There are even some filaments.

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

Photo Credit

Kirk Woellert (NSF) and Patricia Smiley (NRAO)

Investigators

J. Lockman

Telescope

Green Bank Telescope (GBT)

Observation Date

2003-01-07

Type of Observation

spectral line

Wavelength

21 cm

Frequency

1420.4 MHz

Species

HI

Center of Image

RA 0:0:0.000, Dec: 0:0:0.000 (J2000)

Notes

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

Series

Galaxies Series

Unit

Spiral Unit

Citation

Legacy Astronomical Images, “Hydrogen Halo,” NRAO Archives, accessed December 3, 2021, https://www.nrao.edu/archives/items/show/33580.