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HI properties of nearby galaxies from a volume-limited sample | | I. D. Karachentsev
; D. I. Makarov W. K. Huchtmeier
; | | Date: |
27 Jul 1999 | | Subject: | astro-ph | | Affiliation: | Special Astrophysical Observatory) W. K. Huchtmeier (Max-Planck-Institut fur Radioastronomie,Bonn | | Abstract: | We consider global HI and optical properties of about three hundred nearby galaxies with V$_0 < 500$ km/s. The majority of them have individual photometric distance estimates. The galaxy sample parameters, e.g. their linear diameters, their HI mass-to-luminosity ratio, their total mass-to-luminosity ratio, their mean optical surface brightness show some known and some new correlations implying a meaningful dynamic explanation. For the LV galaxies their HI mass and angular momentum follow a nearly linear relation expected for rotating gaseous disks being near the threashold of gravitational instability, favourable for active star formation. | | Source: | arXiv, astro-ph/9907384 | | Services: | Forum | Review | PDF | Favorites | |
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