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Astron. Astrophys. 335, 421-430 (1998)
Star formation and the interstellar medium in low surface brightness galaxies
I. Oxygen abundances and abundance gradients in low surface brightness disk galaxies
W.J.G. de Blok
* and
J.M. van der Hulst
Kapteyn Astronomical Institute, P.O. Box 800, 9700
AV Groningen, The Netherlands (edeblok@physics.unimelb.edu.au;
vdhulst@astro.rug.nl)
Received 17 July 1997 / Accepted 6 March 1998
Abstract
We present measurements of the oxygen abundances in 64
HII regions in 12 LSB galaxies. We find that oxygen
abundances are low. No regions with solar abundance have been found,
and most have oxygen abundances ![[FORMULA]](img1.gif)
to 0.1 solar.
The oxygen abundance appears to be constant as a function of radius,
supporting the picture of quiescently and sporadically evolving LSB
galaxies.
Key words: galaxies:
ISM 
galaxies:
abundances
galaxies:
evolution
ISM: abundances
galaxies: spiral
* Present address: School of Physics, University of Melbourne, Parkville VIC 3052, Australia
Send offprint requests to: W.J.G. de Blok
Contents
- 1. Introduction
- 2. Sample selection, observations and reduction
- 3. The data
- 4. Determining the oxygen abundances
- 4.1. The standard method
- 4.2. The strong line method
- 5. Oxygen abundances
- 6. Reddening and extinction
- 7. Gradients
- 8. Conclusions
- Acknowledgements
- References
© European Southern Observatory (ESO) 1998
Online publication: June 18, 1998
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