The Local Volume HI Survey

ESO 308-G022 (HIPASS J0639-40) is a rather isolated dwarf irregular galaxy at a Hubble distance of 7.7 Mpc. Optical and infrared H-band imaging by Parodi et al. (2002) and Kirby et al. (2008), respectively, reveal its stellar structure. Our ATCA HI maps show a resolved, regularly rotating HI disc. We measure F_HI = 4.4 Jy km/s, in agreement with HIPASS (Meyer et al. 2004), and derive an HI mass of 6.1 × 10⁷ M_☉. A kinematic analysis of the LVHIS data by Kirby et al. (2012) results in a rising rotating curve with v_max = 40 km/s at a radius of 100 arcsec (4.1 kpc).

Reference: Koribalski et al. 2018 * LVHIS database * LVHIS homepage * next