The Local Volume HI Survey

ESO 383-G087 (HIPASS J1349-36) is a barred Magellanic dwarf galaxy at a TRGB distance of 3.45 ± 0.27 Mpc (Karachentsev et al. 2007), located roughly between M 83 and Cen A. Its nearest neighbours are the dwarf galaxies ESO 384-G016 (see Bouchard et al. 2009, Crnojevc et al. 2012) and HIPASS J1348-37, at projected distances of 103.9 arcmin and 114.8 arcmin, respectively, while the more massive S0 galaxy NGC 5102 (HIPASS J1321-36) is 5.5 degr away. Our ATCA data show an extended, but highly asymmetric HI distribution of ESO 383-G087 and an unusual HI velocity field. The latter is similar to the HI velocity dispersion map and shows no clear sign of rotation (Koribalski 2007), which is likely due to the galaxy's face-on orientation. This interpretation is supported by the narrow velocity widths of the integrated HI profile. The very faint spheroidal halo seen in co-added optical images by Kemp & Meaburn (1994) is similar in size to the detected ATCA HI envelope. The somewhat asymmetric HI extensions to the north and south are likely spiral arms. We measure F_HI = 25.4 Jy km/s, in agreement with HIPASS (Koribalski et al. 2004), and derive M_HI = 7.1 × 10⁷ M_☉. Only a partial GALEX UV image is currently available.

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