Dwarf Galaxy NGC 3664

Image
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About this Image

A collection of radio and optical images of NGC 3664 (galaxy on the top) and its dwarf companion NGC 3664A (blob at the bottom). NGC 3664 is a peculiar barred dwarf spiral, also known as Arp 5. Its optical morphology reveals a single spiral arm emerging from the end of an optical bar. Clockwise (from the upper left panel) are the distribution of total atomic hydrogen (HI) (contours and greyscales); the velocity distribution of the HI contoured on a greyscale of the total HI map; color-coded HI velocity field (red indicates gas which is moving away from us, blue indicates gas that is moving towards us); and the total HI map contoured upon an optical image taked from the Digital Sky Survey.

Investigator(s):  E. M. Wilcots and M. K. Prescott

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Technical Data

    Telescope VLA 
    Date of Observation 2002-00-00 
    Type of Observation Spectral Line Observations 
    Wavelength 21 cm 
    Frequency 1420.4 MHz 
    Species HI 
    Center of Image RA: 11:24:25.05, Dec: 03:19:33.80 (J2000)  
    Field of View 0.3000 x 0.3000 degrees  
    Technical Caption Contour levels on the total HI maps are 0.4, 0.8, 1.6, 3.2, 6.4, and 12.8 x 1020 cm-2. The gray scales in the first two panels are in units of 1020 cm-2. The color-coded velocity scale in panel 3 is in units of kilometers per second.  

  • Astronomical database entries for NGC3664
    • Query NED for images of NGC3664
    • Query SIMBAD for more NGC3664 data

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