| Type |
Conference Paper |
| Names |
Christina Ketchum, Stephen Tufte, Mathew Bershady, David Andersen |
| Proceedings Title |
APS Meeting Abstracts, abstract #B5.010 |
| Conference Name |
10th Annual Meeting of the Northwest Section of APS, May 15-17, 2008 |
| Date |
May 1, 2008 |
| URL |
http://adsabs.harvard.edu/abs/2008APS..NWS.B5010K |
| Library Catalog |
NASA ADS |
| Abstract |
We present observations of the ionized interstellar medium of 39 face-on
spiral galaxies obtained with the WIYN 3.5-m telescope coupled to the
Sparsepak integral field unit. We investigate the relationship between
the vertical motions of the gas, as measured from the H-alpha
line-widths, and the local star formation activity, traced by the
H-alpha intensity. Several trends were found: 1) there exists a
threshold H-alpha intensity below which the line-width is uncorrelated
with the star formation activity and is presumably dominated by other
thermal and turbulent processes 2) above this threshold many galaxies
exhibit a strong positive correlation between the H-alpha line width and
intensity and 3) even higher H-alpha intensities demonstrated a
secondary trend line, in which the intensity leveled-off with increasing
H-alpha line-width. |