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STAR FORMATION IN HI SELECTED GALAXIES

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Abstract

We (myself, Rene Walterbos, Greg Bothun, Karen O'Neil, and Erwin de Blok) have conducted broad-band B and R and narrow band H-alpha imaging of 69 galaxies selected from the HI Parkes All Sky Survey (HIPASS) to explore the star formation properties of a sample that is not inherently biased toward higher surface brightness galaxies (like an optically selected sample would be). The results are detailed in two papers, the first of which has been accepted by ApJ; the second paper is still being revised and has not yet been submitted.



Preprints:


general properties (paper I)



HII region properties (paper II)



3 color jpegs of the galaxies
These jpegs were made using logarithmic scaling and blue=Johnson B, green=continuum subtracted H-alpha, and red=Cousins R. They have been byte-scaled using the peak galaxy flux, so any bright foreground stars appear purple (i.e. they don't appear on the H-alpha image and get scaled to the same value on the B and R images). The scale is the same for all images, approximately 0.4 arcseconds per pixel.