The Local Volume HI Survey (LVHIS)

NGC 2915

NGC 2915 (HIPASS J0926-76) is a rather isolated BCD galaxy at a TRGB distance of 3.78 ± 0.43 Mpc (Karachentsev et al. 2003), much studied in HI by Meurer et al. (1996) and more recently Elson et al. (2010). No neighbouring galaxies are known within 5 degr. The HI cloud HIPASS J0851-75 (vsys = 482 km/s) west of NGC 2915 appears to be the highest velocity cloud complex near the start of the Magellanic Leading Arm. Our ATCA maps of NGC 2915 show an enormous HI disc − compared to the compact stellar body − with a mostly regular rotation pattern. Meurer et al. (1996) measured an HI extent of ~20 arcmin, i.e., 5× its Holmberg radius. They note a short central bar and extended spiral arms. We measure FHI = 108.7 Jy km/s, in agreement with HIPASS (Koribalski et al. 2004), and derive MHI = 3.7 × 108 M. For recent HI studies of NGC 2915 see Elson et al. (2010, 2011a,b), who improve on previous ATCA HI results by Meurer et al. (1998, 1996) and Bureau et al. (1999). Elson et al. (2012) also investigate the star formation in NGC 1705 and NGC 2915.

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

Last updated on 18 Feb 2018. © Copyright CSIRO