ESO 341-IG04, an elliptical galaxy in the making

Details ESO 341-IG04, an elliptical galaxy in the making ESO 341-IG04, an elliptical galaxy in the making

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...222...49b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 222, no. 1-2, Sept. 1989, p. 49-57. Research supported by the Naturvetenskapli

Astronomy and Astrophysics

Astronomy

19

Elliptical Galaxies, Galactic Evolution, Ionized Gases, Stellar Luminosity, Stellar Mass, Astronomical Photometry, Sky Surveys (Astronomy)

Scientific paper

ESO 341-IG04 appears to be an elliptical galaxy with distorted outer regions. The luminosity profile closely follows the de Vaucouleurs r exp-1/4 law out to five effective radii. Low-ionized gas is detected out to a distance corresponding to one effective radius. Unlike normal elliptical galaxies, ESO 341-IG04 is dominated by a relatively young stellar population evenly distributed over the main body. Spectral synthesis yields an age of the young stars of about 1 Gyr and a mass of several times 10 to the 10th solar masses. A total stellar mass for the galaxy of about 5 x 10 to the 11th solar masses, is derived. ESO 341-IG04 is a unique example of a juvenile elliptical galaxy, formed as a result of a merger involving ast least two massive gas-rich disk galaxies or a small group of such galaxies.

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