Star Formation Rate at z = 0.2 derived from H_alpha luminosities: constraint on the reddening
| dc.creator | Tresse, Laurence | |
| dc.creator | Maddox, Steve J. | |
| dc.date | 1997-12-09 | |
| dc.date.accessioned | 2026-07-07T02:25:33Z | |
| dc.date.available | 2026-07-07T02:25:33Z | |
| dc.description | We discuss the relative merits of using UV and H_alpha as star formation indicators from galaxy surveys. In particular, comparing UV and H_alpha in the CFRS gives a limit of a factor 2.5 for the UV(2800 Angs.) flux extinction from dust, using the conversion factors of Madau et al. 1998 (Salpeter IMF, 0.1-125 solar mass). Our strong correlation between B and H_alpha luminosities argues for a universal IMF slope. The H_alpha luminosity function at z = 0.2 shows a faint end slope of alpha = -1.35, which is consistent with fading of short bursts of star formation. We also discuss the contribution of AGN to UV and H_alpha luminosities. | |
| dc.description | 4 pages, LaTeX (macro paspconf.sty). To appear in "The Young Universe", eds. S. D'Odorico, A. Fontana, E. Giallongo, A.S.P. Conf. Series | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9712130 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9712130 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/11917 | |
| dc.subject | Astrophysics | |
| dc.title | Star Formation Rate at z = 0.2 derived from H_alpha luminosities: constraint on the reddening | |
| dc.type | text |