ESO 222-G010 (HIPASS
J1434-49) is a dwarf irregular galaxy at low Galactic latitude, located
in the outskirts of the Cen A group. Its systemic velocity of vhel
= 622 ± 5 km/s (Koribalski et al. 2004) and vLG = 431 km/s
suggest a Hubble distance of 5.8 Mpc. No TRGB distance is currently available.
Our ATCA HI data show a resolved distribution and a regular velocity field
(PA ~ 20 degr), aligned with the faint stellar body. Higher resolution maps
are needed to study its HI morphology and velocity field in detail. We measure
FHI = 6.1 Jy km/s, in agreement with HIPASS (Koribalski et al.
2004), and derive MHI = 4.8 × 107
M☉. Bright Hα emission detected by Kaisin et al. (2007)
agrees with the centre of the ATCA HI distribution presented here.
Reference:
Koribalski et al. 2018
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