The Local Volume H I Survey (LVHIS)
Abstract
The `Local Volume H I Survey' (LVHIS) comprises deep H I spectral line and 20-cm radio continuum observations of 82 nearby, gas-rich galaxies, supplemented by multiwavelength images. Our sample consists of all galaxies with Local Group velocities vLG < 550 km s-1 or distances D < 10 Mpc that are detected in the H I Parkes All Sky Survey (HIPASS). Using full synthesis observations in at least three configurations of the Australia Telescope Compact Array (ATCA), we obtain detailed H I maps for a complete sample of gas-rich galaxies with δ ≲ -30°. Here we present a comprehensive LVHIS galaxy atlas, including the overall gas distribution, mean velocity field, velocity dispersion, and position-velocity diagrams, together with a homogeneous set of measured and derived galaxy properties. Our primary goal is to investigate the H I morphologies, kinematics, and environment at high resolution and sensitivity. LVHIS galaxies represent a wide range of morphologies and sizes; our measured H I masses range from ∼107 to 1010 M⊙, based on independent distance estimates. The LVHIS galaxy atlas (including FITS files) is available on-line.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- August 2018
- DOI:
- 10.1093/mnras/sty479
- arXiv:
- arXiv:1904.09648
- Bibcode:
- 2018MNRAS.478.1611K
- Keywords:
-
- surveys;
- galaxies: dwarf;
- galaxies: kinematics and dynamics;
- galaxies: spiral;
- galaxies: structure;
- radio lines: galaxies;
- Astrophysics - Astrophysics of Galaxies;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 38 pages, 14 figures + large on-line supplement (LVHIS Galaxy Atlas: HI moment maps and pv-diagrams)