Converting H$α$ Luminosities into Star Formation Rates

Details Converting H$α$ Luminosities into Star Formation Rates Converting H$α$ Luminosities into Star Formation Rates

2007-05-22

arxiv.org/abs/0705.3177v1

Astronomy and Astrophysics

Astrophysics

2 pages, 4 figures, To be published in the proceedings of "Pathways Through an Eclectic Universe", ed. T. Mahoney, A. Vazdekis

Scientific paper

10.1086/523033

The recent finding that the IGIMF (integrated galaxial initial stellar mass function) composed of all newly formed stars in all young star clusters has, in dependence of the SFR, a steeper slope in the high mass regime than the underlying canonical IMF of each star cluster offers new insights into the galactic star formation process: The classical linear relation between the SFR and the produced H$\alpha$ luminosity is broken and SFRs are always underestimated. Our new relation is likely to lead to a revision of the cosmological SFH.

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