HIPASS J1131-31
HIPASS J1131-31
is a dwarf irregular galaxy with an HI systemic velocity of 716 km/s,
originally discovered in HIPASS by us. Our ATCA HI maps reveal an unresolved
source, centered at α,δ(J2000) = 11:31:34.6, -31:40:28.3. The star
TYC 7215-199-1 (10.4 mag) nearly fully obscures the stellar body of this
galaxy. GALEX UV images reveal a compact blue dwarf galaxy at the
above position. Its closest neighbours are HIPASS J1132-32 (80 arcmin) and
NGC 3621 (182 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 FHI = 1.13
Jy km/s, which corresponds to MHI = 1.2 × 107
M☉.
Reference:
Koribalski et al. 2018
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