H_alpha emission line morphologies of Markarian starburst galaxies
Preprint
- 6 September 2001
Abstract
We present broad band R and narrow band H_alpha emission line images of a sample of optically selected starburst galaxies from the Markarian lists. The emission line morphology is studied and global properties like luminosities, equivalent widths and star formation rates are derived. The radial distribution of H_alpha flux and the EW are determined using concentric aperture photometry on the emission line and the continuum images. H_alpha flux is generally found to peak in the nuclear region and fall off outwards. The EW is found to peak off-center in most of the cases implying that though the intensity of emission is maximum at the nucleus, the star formation activity relative to the underlying continuum often peaks away from the center in Markarian starburst galaxies.Keywords
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