SIMBAD references

2002AJ....124...78C - Astron. J., 124, 78-99 (2002/July-0)

Galaxies on the blue edge.


Abstract (from CDS):

We have successfully constructed a catalog of H I-rich galaxies selected from the Minnesota Automated Plate Scanner catalog of the Palomar Observatory Sky Survey (POSS I), based solely on optical criteria. We identify H I-rich candidates by selecting the bluest galaxies at a given apparent magnitude, those galaxies on the blue edge of POSS I color-magnitude parameter space. Subsequent 21 cm observations on the upgraded Arecibo 305 m dish detected over 50% of the observed candidates. The detected galaxies are H I-rich, with H I masses comparable to ``normal'' high surface brightness disk galaxies, and they have gas mass-to-light ratios ranging from 0.1 to 4.8 (in solar units). Comparison of our candidate galaxies with known low surface brightness galaxies (hereafter LSBs) shows that they exhibit similar optical and H I properties to that population. We also show that previously identified LSBs, including several LSBs with red B-V colors, preferentially occupy the blue edge of POSS I color-magnitude parameter space. Their presence on the blue edge appears to be a selection effect due to differing plate limits in the two POSS I bandpasses. This suggests the POSS I is a good filter for separating galaxies on the higher surface brightness end of the LSB population from the general population of galaxies in the night sky.

Abstract Copyright:

Journal keyword(s): Galaxies: Peculiar - Galaxies: Statistics - Surveys

Nomenclature: Table 2: MAPS-CD AFFF-NNNNNNN N=71.

Simbad objects: 82

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