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Edge-on Low Surface Brightness Galaxies in the SDSS and the Red Halo Phenomenon

Published online by Cambridge University Press:  01 August 2006

Brady Caldwell  and
Nils Bergvall
Brady Caldwell
Affiliation:
Department of Astronomy and Space Physics, Uppsala University, Sweden email: [email protected], [email protected]
Nils Bergvall
Affiliation:
Department of Astronomy and Space Physics, Uppsala University, Sweden email: [email protected], [email protected]
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Abstract

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Extremely red halos have been detected around high surface brightness (HSB) disk galaxies and blue compact galaxies. We analyse the halo emission of a sample of 970 stacked edge-on low surface brightness (LSB) galaxies in the SDSS (DR4) down to μg ~ 30 mag arcsec−2. These are divided by g − r colour limits into a “blue” Sample A (336 galaxies), “yellow” Sample B (318 galaxies) and “red” Sample C (316 galaxies). The gri colours indicate a prominent red excess in the polar direction, strongly deviating from any normal stellar population.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 82
Copyright
Copyright © International Astronomical Union 2007

References

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