Spatially-resolved evolutionary synthesis modelling of ARP 299 - Preliminary results

Details Spatially-resolved evolutionary synthesis modelling of ARP 299 - Preliminary results Spatially-resolved evolutionary synthesis modelling of ARP 299 - Preliminary results

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.157..117s&link_type=abstract

(Instituto de Astrofisica de Canarias and Comision Interministerial de Ciencia y Tecnologia, Summer School on Evolutionary Pheno

Astronomy and Astrophysics

Astrophysics

1

Cosmic Dust, Cosmic Gases, Galactic Evolution, Interacting Galaxies, Starburst Galaxies, Astronomical Models, Synthesis

Scientific paper

Spatially-resolved evolutionary synthesis modeling of the colliding galaxies NGC 3690 and IC 694, together known as Arp 299, is presented. This system is a possible merger and an excellent example of interaction-induced starbursts. Arp 299 is relatively nearby (V = 3100 km/s), emits most of its energy in the far-IR, and shows signs extended, thermal radiation sources. As such, it presents a good candidate for understanding the relationships between the dynamics of interacting galaxies and the starburst process. Previously published photometric and spectroscopic data from the ultraviolet, optical, near- and far-infrared, millimeter, and radio spectral regions are used to constrain synthesis modeling of 1-2 kpc diameter areas at the three canonical regions of interests. The near-IR broadband decomposition method of Joy and Harvey (1987; also Telesco et al., 1985) is used to obtain the extinction to each of the three areas, which makes it possible to determine the intrinsic stellar spectrum. The synthesis modeling then determines the initial mass function and the star formation rate history of the interaction-induced stellar populations.

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