Other
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21733528j&link_type=abstract
American Astronomical Society, AAS Meeting #217, #335.28; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
Scientific paper
Recent observational evidence has shown that dwarf galaxies exhibit lower Hα-FUV flux ratios than typical star-forming galaxies. While this fact has been interpreted as evidence for a variable upper IMF, these results are subject to systematics due to imperfect internal dust attenuation corrections and other biases. Using observations of 127 Local Volume star-forming galaxies derived from the LVL and SDSS datasets, we explore how different internal dust corrections and sample completeness can affect the resulting physical interpretation. We also examine the susceptibility of our Hα-FUV ratio distribution and correlation analyses to biases that result from our choice of independent parameter (e.g., stellar mass, R-band surface brightness). We then apply our understanding of these factors to test the possibility that the observed ratio distribution could be the result of age effects. Using model star formation histories, we can explain the distribution of Hα-FUV ratios without invoking variations in the upper IMF.
Johnson Benjamin D.
Johnson Clifton L.
LVL Team
Skillman Evan D.
Weisz Daniel R.
No associations
LandOfFree
Hα-FUV Flux Ratios of Local Volume Galaxies: Effects of Systematic Biases on Upper IMF Constraints does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hα-FUV Flux Ratios of Local Volume Galaxies: Effects of Systematic Biases on Upper IMF Constraints, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hα-FUV Flux Ratios of Local Volume Galaxies: Effects of Systematic Biases on Upper IMF Constraints will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1401991