The Local Volume HI Survey

ESO 270-G017 (HIPASS J1334-45) , also known as the Fourcade-Figueroa galaxy, is a highly obscured edge-on spiral. Karachentsev et al. (2013) assigned a distance of D_mem = 3.6 Mpc based on the assumption that it is a member of the Cen A subgroup. Here we adopt the TRGB distance of 6.95 ± 0.16 Mpc derived by Jacobs et al. (2009), in agreement with the Hubble distance obtained from ESO 270-G017's Local Group velocity (v_LG = 611 km/s). Our ATCA HI maps reveal a well-resolved disc with a mostly regular rotation pattern (see also Koribalski 2008). Some peculiar motions are discernible on the western (approaching) side, which also shows a higher velocity dispersion. The observed HI extent of ESO 270-G017 is only slightly larger than the stellar disc detected in deep optical images by David Malin. Mild asymmetries in the stellar disc (typical for SBm type galaxies) match those in the HI distribution. We measure F_HI = 224.7 Jy km/s, ~10% higher than the HIPASS F_HI (Koribalski et al. 2004), and derive M_HI = 2.6 × 10⁹ M_☉.

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