Malin 1: A deeper look

Lesa Moore*, Quentin A. Parker

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    19 Citations (Scopus)


    Our R-band data show that the optical light from Malin 1 corresponds well with the >2-arcmin extent of the galaxy's Hi content and continues well beyond previously published V-band optical light radial profiles. Analysis of our image yields improved understanding of the galaxy's properties. We measure ellipticity of 0.20 ± 0.03, implying inclination of 38 ± 3°, and we trace the radial profile to 77 arcsec. A single dusty spiral arm is also weakly discernable, and is consistent with the rotation direction of the Hi and spiral structure of the inner disk. Possible scenarios for the origin of the spiral structure are discussed.

    Original languageEnglish
    Pages (from-to)165-169
    Number of pages5
    JournalPublications of the Astronomical Society of Australia
    Issue number4
    Publication statusPublished - 2006


    • Galaxies: evolution
    • Galaxies: fundamental parameters
    • Galaxies: individual (Malin 1)
    • Techniques: image processing


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