NGC 2146's starburst region and extended structure

Details NGC 2146's starburst region and extended structure NGC 2146's starburst region and extended structure

Nov 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26a...459..441g&link_type=abstract

Astronomy and Astrophysics, Volume 459, Issue 2, November IV 2006, pp.441-451

Astronomy and Astrophysics

Astrophysics

6

Galaxies: General, Galaxies: Starburst

Scientific paper

We present mm-wavelength and optical observations of the starburst region in NGC 2146. This region of ~4 kpc diameter contains a well-ordered distribution of stars, gas, and dust, and a well-ordered rotation. The possible anomalies found in our observation are a warped CO distribution and an increase in the CO line width at the NW edge of the starburst region. The investigation of a possible encounter or merger origin of the starburst may therefore have to concentrate on the distorted outer structure of the galaxy. There are three large-scale features of ~20 kpc extent, two of which give the impression of being stellar sub-systems. The third feature is an incomplete and expanding ring of H ii regions and stars, apparently indicating an event that occurred some 300 Myr ago.

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