VLA and HST Observations of the Antennae

Minimum credit line: Image courtesy of NRAO/AUI and STScI/NASA(for details, see Image Use Policy).

About this Image

These two colliding galaxies, NGC 4038 (top) and NGC 4039 (bottom) are collectively known as "The Antennae". The figure on the left shows the neutral hydrogen gas (HI) in blue, mapped with the NRAO Very Large Array, superimposed on an optical image from the CTIO 0.9m in green and white. This composite image shows the extent of the tidal tails of material that were pulled out of the two galaxies as they gravitationally interact with each other. The optical image on the right, made with the Hubble Space Telescope, shows the heart of these galaxies and the young clusters of stars created in the collision (courtesy STScI/NASA).

Investigator(s):  VLA: J.E.Hibbard, J.M. van der Hulst, J.E. Barnes & R.M. Rich. HST: B. Whitmore & F. Schweizer

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Technical Data

    Telescope VLA and HST 
    Date of Observation 1996-06-03 
    Type of Observation Spectral Line Observations 
    Wavelength 21 cm 
    Frequency 1420.4 MHz 
    Species HI 
    Center of Image RA: 12:01:52.48, Dec: -18:52:2.90 (J2000)  
    Field of View 0.3000 x 0.3000 degrees  
    Technical Caption Optical image on the left obtained with the CTIO 0.9m telescope, and is a combination of CCD exposures taken in the Blue, Visible, and Red part of the spectrum. The VLA observations are a combination of C-array and D-array observations. HST image is a truecolor WFPC image from Whitmore & Schweizer.  

  • Astronomical database entries for NGC4038
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