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2013MNRAS.433..543S - Mon. Not. R. Astron. Soc., 433, 543-559 (2013/July-3)
Choirs, HI galaxy groups: catalogue and detection of star-forming dwarf group members.
SWEET S.M., MEURER G., DRINKWATER M.J., KILBORN V., DENES H., BEKKI K., HANISH D., FERGUSON H., KNEZEK P., BLAND-HAWTHORN J., DOPITA M., DOYLE-PEGG M.T., ELSON E., FREEMAN K., HECKMAN T., KENNICUTT R., KIM J.H., KORIBALSKI B., MEYER M., PUTMAN M., RYAN-WEBER E., SMITH C., STAVELEY-SMITH L., WONG O.I., WEBSTER R., WERK J. and ZWAAN M.
Abstract (from CDS):
The dwarf galaxies in the Choir groups would not be individually detectable in HiPASS at the observed distances if they were isolated, but are detected in SINGG narrow-band imaging due to their membership of groups with sufficiently large total Hi mass. The ELGs in these groups are similar to the wider SINGG sample in terms of size, Hα equivalent width and surface brightness.
Eight of these groups have two large spiral galaxies with several dwarf galaxies and may be thought of as morphological analogues of the Local Group. However, on average our groups are not significantly Hi deficient, suggesting that they are at an early stage of assembly, and more like the M81 group. The Choir groups are very compact at typically only 190 kpc in projected distance between the two brightest members. They are very similar to SINGG fields in terms of star formation efficiency (SFE; the ratio of star formation rate to Hi mass), showing an increasing trend in SFE with stellar mass.
Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)
Journal keyword(s): galaxies: groups: general - galaxies: dwarf - Local Group - radio continuum: galaxies
VizieR on-line data: <Available at CDS (J/MNRAS/433/543): table1.dat table2.dat>
Nomenclature: Table 1: [SMD2013] HIPASS JHHMM+DDa N=15. Table 2: SINGG HIPASS JHHMM+DDa SNN N=89.
Errata: erratum vol. 471, p. 3615 (2017)
Simbad objects: 123
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