An HI Survey of LSB galaxies selected from the APM Survey

Details An HI Survey of LSB galaxies selected from the APM Survey An HI Survey of LSB galaxies selected from the APM Survey

1998-10-29

arxiv.org/abs/astro-ph/9810470v1

Astronomy and Astrophysics

Astrophysics

8 pages incl. 5 postscript figures. To be published in "The Low Surface Brightness Universe, IAU Coll 171, eds. J.I.Davies et

Scientific paper

We present preliminary results of a neutral hydrogen (HI) redshift survey to find low surface brightness (LSB) galaxies in the very nearby universe. Our sample consists of all galaxies in the APM catalog (Maddox et al 1990) with a mean surface brightness of mu > 24 mag/arcsec^2, down to a magnitude limit of b_j < 17. With the Parkes 64m Radiotelescope 35 objects were detected at v < 4300 km/s. The resulting luminosity function, HI mass function, and for the first time field mass function are presented. It is found that LSBs make a negligible contribution to the overall integrated luminosity, HI mass, and total mass contained in galaxies.

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