The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI - Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
作者： Ricardo Morras , P. M.W. Kalberla , Dap Hartmann , W. B. Burton , Esteban Bajaja
DOI: 10.1051/0004-6361:20041864
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摘要: We present the final data release of observations ?21-cm emission from Galactic neutral hydrogen over entire sky, merging Leiden/Dwingeloo Survey (LDS: Hartmann & Burton 1997, Atlas Neutral Hydrogen) sky north ? = ?30? with Instituto Argentino de Radioastronomia (IAR: Arnal et al. 2000, AA and Bajaja 2005, A&A, 440, 767) south ?25?. The angular resolution combined material is HPBW 0. ?6. LSR velocity coverage spans interval ?450 km s?1 to +400 s?1, at a 1.3 kms?1. were corrected for stray radiation Institute Radioastronomy University Bonn, refining original correction applied LDS. rms brightness-temperature noise merged database 0.07?0.09 K. Residual errors in profile wings due defects are most below level 20?40 mK. It would be necessary construct telescope main beam efficiency ?MB >? 99% achieve same accuracy. refined entering LAB HI intended general resource useful wide range studies physical structural characteristices interstellar environment. sensitive Milky Way survey date, extensive both spatially kinematically.
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