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The spectral properties of a large sample of low surface brightness disk galaxies

Published online by Cambridge University Press:  01 April 2008

Y. C. Liang ,
G. H. Zhong ,
L. C. Deng  and
B. Zhang
Y. C. Liang*
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China
G. H. Zhong
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China Department of Physics, Hebei Normal University, Shijiazhuang 050016, China
L. C. Deng
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China
B. Zhang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China Department of Physics, Hebei Normal University, Shijiazhuang 050016, China
*
†email: [email protected]
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Abstract

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We present the spectral properties of a large sample of nearly face-on low surface brightness (LSB) disk galaxies selected from the SDSS-DR4 main galaxy sample. About 12,282 LSB galaxies have been selected from the photometry database with their B-band central surface brightness μ0(B) ranging from 22 to 24.5 mag arcsec−2. About 7000 of such LSBGs have measured emission lines ([OII]3727, [OIII]5007, Hβ, Hα, [NII]6583) with the S/N ratio greater than 5σ. Their spectral diagnostic diagram of [NII]/Hα vs. [OIII]/Hβ shows that ~89% of them are star-forming galaxies, and ~11% could be classified as AGNs. The relations of μ0(B) vs. 12+log(O/H) and μ0(B) vs. stellar masses M* of these star-forming LSB galaxies show that their O/H and M* increase following the increasing μ0(B). The majority of these LSBGs are on the higher branch of metallicity.

Keywords

Galaxies: abundancesgalaxies: evolutiongalaxies: fundamental parametersgalaxies: spiralgalaxies: starburst
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S252: The Art of Modeling Stars in the 21st Century , April 2008 , pp. 119 - 120
Copyright
Copyright © International Astronomical Union 2008

References

Baldwin, J. A., Phillips, M. M., & Terlevich, R. 1981, PASP 93, 5CrossRefGoogle Scholar
Impey, C., Sprayberry, D., Irwin, M. K. et al. 1996, ApJS 105, 209CrossRefGoogle Scholar
Kauffmann, G., Heckman, T. M., Tremonti, C. A., et al. 2003, MNRAS 346, 1055CrossRefGoogle Scholar
Kewley, L. J., Heisler, C. A., Dopita, M. A. et al. 2001, ApJS 132, 37CrossRefGoogle Scholar
McGaugh, S. S. 1994, ApJ 426, 135CrossRefGoogle Scholar
Zhong, G. H., Liang, Y. C., Deng, L. C., & Zhang, B. 2008, this proceedingsGoogle Scholar