As a result, galaxy mergers are often believed to lie above the galaxy main sequence: the tight correlation between stellar mass and star formation rate. Fig 1 from SM96 shows the LF for starburst galaxies ; the overall form is not like the Schechter function it can be characterised by a double power law, slope -1 below 10 10.3 L and -2.35 above at low luminosities, SBs are much less common than normal galaxies (eg only a small fraction of RSA or RC3 galaxies …

Young, massive stars with masses above ˘5 M forming in starbursts provide the thermal and non-thermal luminosity responsible for the observed global galactic parameters (Heckman 1998).

I discuss briefly three areas of research that will be intensively studied over the next two decades that are relevant to astrophysics from the moon: the fundamental plane for active galaxies, the connection of starburst galaxies with AGN and galaxy formation, and the effect of AGN and quasars on galaxy formation and the evolution of the IGM. Starburst and Galaxy Evolution .

Starburst galaxies are powered by massive stars. Stars are the fundamental building blocks of galaxies. Gas accretion, outflows and energetic feedback play crucial roles in the evolution of galaxies.

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The tight connection of stellar and galactic properties permits

Nearly all types of galaxies can undergo starburst events if conditions are right.

In the case of Starburst galaxies, this strength, together with the emission-line ratio [O II]/[O III],can be used to determine the age of the cluster.
Galaxies. Before exploding as supernovae, they live out their lives of only a few million years with prodigious outputs of radiation and stellar winds which dramatically affect both their evolution and environments. FROM LUMINOUS HOT STARS TO STARBURST GALAXIES Luminous hot stars represent the extreme upper mass end of normal stellar evolution. Population evolution also drives luminosity evolution (along with mergers and the evolution of obscuring ISM). Thus, in principle, color-magnitude arrays can test for evolution if we have suitable zero-point models for comparison. Scaling relations of metallicity (O/H), star formation rate (SFR), and stellar mass (Mstar) give important insight on galaxy evolution.

Shock waves push the gas, which sets off the starburst activity.

Stars evolve - and so do galaxies. They are obeyed by most galaxies in the Local Universe and also at high redshift.

Starburst galaxies are galaxies where high rates of star formation has occurred very quickly. Normal Galaxies & Starburst Galaxies. The strength of the Ca II lines is mainly governed by the age of the stellar cluster through the presence of red supergiant stars. The great luminosity of starburst galaxies is not confined to their nucleus.