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Full Description
This 1997 text contains maps showing the distribution of emission from atomic hydrogen, the principal interstellar medium in the Milky Way, as measured over a 5-year period using the 25-metre radio telescope of the Netherlands Foundation for Research in Astronomy. Displayed in several projections, each map corresponds to a particular velocity interval; separation by velocity roughly corresponds to separation by distance, or by energetics. The Leiden/Dwingeloo survey covers the entire sky above declination -30O, on a half-degree grid, over a velocity range of 1000 km/s at 1 km/s resolution. The limiting brightness temperature sensitivity is <0.07 K. A CD-ROM accompanies the Atlas, and contains the entire dataset of the Leiden/Dwingeloo survey in computer-readable form.
Contents
1. Introduction; 2. Project motivation; 3. Background; 4. The Dwingeloo telescope; 5. Observing strategy and parameters; 6. Initial data reduction; 7. Radio interference; 8. Stray-radiation correction; 9. Accuracy of the survey spectra; 10. Preparation of the complete H1 data cube; 11. Contamination by external galaxies; 12. Atlas of moment maps of the H1 sky; 13. CD-ROM; 14. Epilogue; Acknowledgements; References.
