HIPASS J1132-32
HIPASS J1132-32
is a dwarf irregular galaxy with an HI systemic velocity of ~680 km/s,
originally discovered in HIPASS (Meyer et al. 2004). Our low-resolution ATCA
data show an unresolved HI source, centered at α,δ(J2000) =
11:33:10.6, -32:57:45.2. It coincides with a compact blue dwarf galaxy
(PGC 683190) that shows a faint extension to the west. No GALEX UV
images are available. Higher resolution ATCA data reveal a marginally resolved
HI source, matching the shape of the stellar body. Doyle et al. (2005) give
optical magnitudes of BJ, R, and I =
16.28, 16.17, and 17.22 mag. Its nearest neighbours are HIPASS J1131-31 (80
arcmin), NGC 3621 (188 arcmin), and ESO 379-G007 (273 arcmin); projected
distances are given in brackets. Based on its likely association with NGC 3621
(HIPASS J1118-32) we assign the same distance, ie. Dmem = 6.7 Mpc.
We measure ATCA FHI = 1.4 Jy km/s, which corresponds to
MHI = 1.5 × 107 M☉.
Reference:
Koribalski et al. 2018
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