Product Description

Containing maps showing the distribution of emissions from atomic hydrogen, this is an important reference source for astronomers in many different fields of research. Atomic hydrogen, the principal component of the interstellar medium in the Milky Way, was 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. The CD-ROM also contains colour images in GIF format, as well as animations displaying the 3-dimensional data cube.

Product Details

• Amazon Sales Rank: #3571212 in Books
• Published on: 1997-03-06
• Original language: English
• Number of items: 2
• Binding: Hardcover
• 243 pages

Review
‘The Atlas gives a fascinatingly different view of the sky showing beautiful and complex structures, and it is interesting to try to trace and interpret them as their strength changes with velocity from image to image. ... The Atlas is well produced and atomic hydrogen is such an important component of our Galaxy that this excellent atlas/CD should appear on the reference shelves of the library of any astronomical institution.’ Jim Emerson, Astronomy Now

‘… valuable resource … enormous mine of data.’ Carole G. Mundell, The Observatory