The Local Volume HI Survey (LVHIS)

IC 5052

IC 5052 (HIPASS J2052-69) is a barred late-type spiral galaxy at a TRGB distance of 6.03 ± 0.10 Mpc (Seth et al. 2005). It is a relatively isolated galaxy with star-formation throughout the edge-on stellar disc (Meurer et al. 2006) but no known neighbours within 5 degr. Our low-resolution HI maps show a large gas disc (~16 arcmin × 8 arcmin, corresponding to 28 kpc × 14 kpc), i.e. about 2-3 times the size of the stellar disc. Both the HI morphology and kinematics indicate significant warping of the outer HI disc which bends symmetrically by ~30 degr. As usual, the warp starts beyond the stellar disc; the PA of the outermost HI disc is ~290 degr compared to ~322 degr for the inner disc (see also Wang et al. 2017). We measure FHI = 90.0 Jy kms, ~10% less than the HIPASS FHI (Koribalski et al. 2004), and derive MHI = 7.7 × 108 M. Using high-resolution (9 arcsec) ATCA HI maps O'Brien et al. (2010) study the structure of IC 5052's inner disc. They estimate the exponential scale height of the projected minor axis to be 20.5 arcsec (600 pc), which is confirmed by TiRiFiC modeling. O'Brien et al. (2010) give a rotational velocity of 90 km/s for IC 5052. Rossa & Dettmar (2003) study the extraplanar diffuse ionised gas in IC 5052 as well as prominent Hα filaments and shells. HST ACS images by Seth et al. (2005) reveal an intricate web of dust filaments in the edge-on, stellar disc as well as two relatively bright star forming regions. ATCA 20-cm radio continuum emission is clearly detected (see Shao et al. 2017).

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

Last updated on 18 Feb 2018. © Copyright CSIRO