Hα and UV imaging of Low Surface Brightness Galaxies and Extended UV Disks
Creators
Contributors
Abstract
GALEX observations have revealed UV emission extending far beyond the optical and H-alpha disks of several nearby spiral galaxies, raising the question of possible massive star deficiency, i.e., deviations from the standard 'universal' stellar initial mass function (IMF) at the upper end, in certain low density environments. We have undertaken an Hα imaging survey of low surface brightness galaxies observed by GALEX and with existing HI maps with the aim of investigating the variation of the Hα/UV ratio with the local density. Here we present preliminary results for 14 such galaxies observed with the Large Format Camera on the Palomar 200 inch telescope using custom narrow band filters.
Additional Information
© 2011 Astronomical Society of the Pacific. GALEX is a NASA Small Explorer, launched in 2003 April. We gratefully acknowledge NASA's support for construction, operation, and science analysis for the GALEX mission, developed in cooperation with the Centre National d'Etudes Spatiales of France and the Korean Ministry of Science and Technology.Attached Files
Published - Wyder2011p13941Up2010_Have_Observations_Revealed_A_Variable_Upper_End_Of_The_Initial_Mass_Function.pdf
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Wyder2011p13941Up2010_Have_Observations_Revealed_A_Variable_Upper_End_Of_The_Initial_Mass_Function.pdf
Additional details
Identifiers
- Eprint ID
- 24170
- Resolver ID
- CaltechAUTHORS:20110622-152009146
Dates
- Created
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2011-06-22Created from EPrint's datestamp field
- Updated
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2019-10-03Created from EPrint's last_modified field
Caltech Custom Metadata
- Caltech groups
- Space Astrophysics Laboratory
- Series Name
- ASP Conference Series
- Series Volume or Issue Number
- 440