The Heart of Draco the Radio Galaxy 3C 305

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

About this Image

Telescopes that allow scientists to study the Universe at radio, optical, and X-ray wavelengths were used to create this intriguing image of the radio galaxy, 3C 305, which is located in the constellation of Draco the Dragon. The radio data (blue) were acquired at a wavelength of 21 cm with the NRAO Very Large Array and with the Multi-Element Radio-Linked Interferometer Network (MERLIN) operated by the Jodrell Bank Observatory. The images at optical and X-ray wavelengths were obtained with the Hubble Space Telescope (cyan) and Chandra X-ray Observatory (red), respectively. Note that the radio emission is not directly connected with that of the X-rays, while the optical emission seems to be associated with the high-energy X-ray emission.

Investigator(s):  Francesco Massaro and Eli Bressert (Harvard-Smithsonian Center for Astrophysics); Annalisa Bonafede and Elisabetta Liuzzo (INAF Instituto di Radioastronomia)

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Technical Data

    Telescope VLA 
    Type of Observation Continuum Observations 
    Band L 
    Wavelength 20 cm 
    Frequency 1.4 GHz 
    Center of Image RA: 14:49:21.66, Dec: 63:16:14.12  
    Field of View 0.0050 x 0.0050 degrees  

  • Astronomical database entries for 3C305
    • Query SIMBAD for more 3C305 data


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