Published in Dwarf Galaxies: From the Deep Universe to the Present, Proceedings of the International Astronomical Union, IAU Symposium, Volume 344, pp. 288-291, 2019.


B.S. Koribalski

CSIRO Astronomy and Space Science, Australia Telescope National Facility
PO Box 76, Epping, NSW 1710, Australia

Abstract: Here I briefly highlight our studies of the gas content, kinematics and star formation in nearby dwarf galaxies (D < 10 Mpc) based on the ‘Local Volume H i Survey’ (LVHIS, Koribalski et al. 2018), which was conducted with the Australia Telescope Compact Array (ATCA). The LVHIS sample consists of nearly 100 galaxies, including new discoveries, spanning a large diversity in size, shape, mass and degree of peculiarity. The hydrogen properties of dwarf galaxies in two nearby groups, Sculptor and CenA / M83, are analysed and compared with many rather isolated dwarf galaxies. Around 10% of LVHIS galaxies are transitional or mixed-type dwarf galaxies (dIrr/dSph), the formation of which is explored. — I also provide a brief update on WALLABY Early Science, where we focus on studying the H i properties of galaxies as a function of environment. WALLABY (Dec < +30 degr, z < 0.26) is conducted with the Australian SKA Pathfinder (ASKAP), a ∼ 6-km diameter array of 36 × 12-m dishes, each equipped with wide-field (30 sq degr) Chequerboard Phased Array Feeds.

Keywords : galaxies: kinematics and dynamics --- galaxies: structure --- radio lines: galaxies --- surveys

The paper is in pdf format.