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Date and Time of the Query: 2019-04-24 T19:25:28 PDT
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For refcode 2011ApJS..197...28P:
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Copyright by American Astronomical Society. Reproduced by permission
2011ApJS..197...28P An H I Survey of Six Local Group Analogs. II. H I Properties of Group Galaxies Pisano, D. J.; Barnes, David G.; Staveley-Smith, Lister; Gibson, Brad K.; Kilborn, Virginia A.; Freeman, Ken C. Abstract. We have conducted an H I 21 cm emission-line survey of six loose groups of galaxies chosen to be analogs to the Local Group. The survey was conducted using the Parkes multibeam instrument and the Australia Telescope Compact Array (ATCA) over a ~1 Mpc^2^ area and covering the full depth of each group, with an M_H I_ sensitivity of ~7 x 10^5^ M_sun_. Our survey detected 110 sources, 61 of which are associated with the six groups. All of these sources were confirmed with ATCA observations or were previously cataloged by HIPASS. The sources all have optical counterparts and properties consistent with dwarf irregular or late-type spiral galaxies. We present here the H I properties of the groups and their galaxies. We derive an H I mass function (HIMF) for the groups that is consistent with being flatter than the equivalent field HIMF. We also derive a circular velocity distribution function, tracing the luminous dark matter halos in the groups, that is consistent with those of the Local Group and HIPASS galaxies, both of which are shallower than that of clusters or predictions from cold dark matter models of galaxy formation. Key words: galaxies: evolution, galaxies: formation, galaxies: groups: general, galaxies: luminosity function, mass function, Local Group
Retrieve 114 NED objects in this reference.
Please click here for ADS abstract

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