The Local Volume HI Survey

NGC 1705 (HIPASS J0454-53) is a well-studied BCD galaxy (type S0) at a TRGB distance of 5.1 ± 0.6 Mpc (Tosi et al. 2001). It has no known neighbours within 5 degrees. Our high-resolution ATCA data show an extended HI distribution elongated nearly north-south (PA ~ 20 degr) with a mostly regular rotation pattern. Small peculiar velocities are seen towards the north-west. We measure F_HI = 12.2 Jy km/s, ~10% lower than the published HIPASS F_HI (Koribalski et al. 2004), and derive M_HI = 7.5 × 10⁷ M_☉. For a more detailed HI study see Elson et al. (2013), who improve on previous ATCA HI results by Meurer et al. (1998, 1996) and Bureau et al. (1999). The young stellar population and star clusters of NGC 1705 are studied by Annibali et al. (2009) using HST images. Extended stellar emission is seen in GALEX UV images.

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