The Parkes H I Survey of the Magellanic System
Abstract
We present the first fully and uniformly sampled, spatially complete HI survey of the entire Magellanic System with high velocity resolution (Δ v = 1.0 km s-1), performed with the Parkes Telescope. Approximately 24 percent of the southern sky was covered by this survey on a ≈5´ grid with an angular resolution of HPBW = 14.1 arcmin. A fully automated data-reduction scheme was developed for this survey to handle the large number of HI spectra (1.5×106). The individual Hanning smoothed and polarization averaged spectra have an rms brightness temperature noise of σ = 0.12 K. The final data-cubes have an rms noise of σrms ≈ 0.05 K and an effective angular resolution of ≈16´. In this paper we describe the survey parameters, the data-reduction and the general distribution of the HI gas. The Large Magellanic Cloud (
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- March 2005
- DOI:
- 10.1051/0004-6361:20040321
- arXiv:
- arXiv:astro-ph/0411453
- Bibcode:
- 2005A&A...432...45B
- Keywords:
-
- Magellanic Clouds;
- galaxies: interactions;
- ISM: structure;
- ISM: kinematics and dynamics;
- surveys;
- Astrophysics
- E-Print:
- 23 pages, 18 figures, accepted for publication in A&