... are observed to be ellipticals: each shows a passive elliptical galaxy spectrum, and none shows evidence for ongoing starformation (for instance, through the presence of an [O ii] emission line), which would indicate the presence of large amounts of gas ...
... Above this color, one expects variation in to settle down, as the effects of individual starformation events are moderated by the accumulation of mass from previous generations. ...
... Our theoretical and observational work makes us increasingly confident, however, that the Bubbles were inflated, over much longer timescales, by the intense star-formation occurring around the SMBH. ...
... To clarify the underlying physical processes from such observational data, we simulate the chemodynamical evolution of galaxies including starformation, supernovae, and chemical enrichment. ...
... distant objects, providing important constraints upon early starformation epochs ... density, relates directly to the instantaneous star-formation rate in these systems ...
... If most stars have planets, and if planetary formation is usually accompanied by comet ejection, then there should be a ... Series. 323, StarFormation in the Interstellar Medium, Ed. D. Johnstone et al., 371 Dohnanyi, J.S., 1969, J. Geophys. Res., ...
... excited by stars of a wide variety of ages, in a region of continuous starformation ... Galactic Nuclei (AGN), while in others the infrared source is intense starformation ...
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