• NGC 4650 A: A nearly edge-on ring galaxy?

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      https://www.ias.ac.in/article/fulltext/joaa/001/02/0177-0187

    • Keywords

       

      elliptical galaxy—prolate galaxy—ring galaxy—H II regions

    • Abstract

       

      The peculiar galaxy NGC 4650 A (α=12h 42m. 1; = δ—40° 26′; 1950·0) has been studied by means of direct and spectral observations with the ESO 3·6-m telescope. It is interpreted as a prolate, elliptical galaxy surrounded by a warped ring of H II regions, dust and stars. The distance is 47 Mpc (H0=55 km s−1 Mpc−1). The ring is seen nearly edge-on (inclination 85°) and it rotates. It has a diameter of about 21 kpc and is bluer than the elliptical galaxy for which the (M/Lv) ratio is ∼12 in solar units. The observed configuration may be the result of interaction with the nearby galaxy, NGC 4650.

    • Author Affiliations

       

      S. Laustsen1 R. M. West2

      1. Astronomisk Institut, Aarhus Universitet, Aarhus C. - DK-8000, Denmark
      2. European Southern Observatory, Karl-Schwarzchild-Strasse 2, Garching bei München - D-8046, F.R.G.
    • Dates

       
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