Abstract
We present a model of star formation in early-type galaxies which tracks the temperature of the ISM, mainly driven by thermal feedback from SNe and gas cooling. We find massive elliptical galaxies follow an intense and short-lived burst of star formation whereas the ISM of low-mass systems may undergo cooling on timescales shorter than the Hubble time but long enough to allow episodes of star formation at moderate redshift (z ∼ 0.5). Our model assumes an isolated galaxy, i.e. the late star formation stages are purely caused by the gas of the galaxy studied and not by other external means. These episodes are not strong enough to alter the observed small scatter of the optical and NIR color-magnitude relation (CMR), but they introduce a large scatter in NUV—Optical CMR.
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Ferreras, I., Scannapieco, E., Silk, J. (2003). The Complicated Life of Elliptical Galaxies. In: Rosenberg, J.L., Putman, M.E. (eds) The IGM/Galaxy Connection. Astrophysics and Space Science Library, vol 281. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0115-1_39
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DOI: https://doi.org/10.1007/978-94-010-0115-1_39
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