By Arthur N. Cox
This new, fourth, variation of Allen's vintage Astrophysical amounts belongs on each astronomer's bookshelf. it's been completely revised and taken modern by way of a crew of greater than 90 across the world well known astronomers and astrophysicists. whereas it follows the fundamental structure of the unique, this imperative reference has grown to greater than two times the scale of the sooner variants to house the good strides made in astronomy and astrophysics. It comprises specific tables of the newest facts on: - normal constants and devices - Atoms, molecules, and spectra - Observational astronomy in any respect wavelengths from radio to gamma-rays, and neutrinos - Planetary astronomy: Earth, planets and satellites, and sunlight process small our bodies - The solar, general stars, and stars with detailed features - Stellar populations - Cataclysmic and symbiotic variables, supernovae - Theoretical stellar evolution - Circumstellar and interstellar fabric - superstar clusters, galaxies, quasars, and energetic galactic nuclei - Clusters and teams of galaxies - Cosmology. in addition to a lot explanatory fabric and large and up to date bibliographies.
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Additional info for Allen’s Astrophysical Quantities
Html. "Atomic Data for Astrophysics"). miUchianti) has installed a database with information suitable for extreme-UV applications. com) makes available periodically its newest releases of particle properties. Other sources of information are the recent Atomic, Molecular, and Optical Physics Handbook , the results of the work of the Collaborative Computational Project No. 7 (United Kingdom) , and the Handbook of Chemistry and Physics . 00. Standard values abridged to five significant digits are given (from the International Union of Pure and Applied Chemistry (IUPAC); see ).
The data are averaged from  (rather high heavy-element abundance) and  (rather low heavy-element abundance). 6 ATOMIC CROSS SECTIONS FOR ELECTRONIC COLLISIONS / 35 Table 3A. log Pg. 5 gives the energy in eV required to ionize each element to the next stage of ionization. I (Y = 1) denotes the neutral atom, II the first ion, etc. Dividing lines between shells and subshells are added to assist interpolation. Part of the data is based on an especially accurate compilation for selected ions [6-20], made available by the National Institute of Standards and Technology (NIST.
9 Molecules. . . . . . . . . . . . .. 10 Plasmas. . . . . . . . . . . . . gov). html) provide, besides their own data. many useful links to other databases. L. L. fr/OP) (with monochromatic opacities, collision strengths, and other atomic data). uk/projects/iron). html. "Atomic Data for Astrophysics"). miUchianti) has installed a database with information suitable for extreme-UV applications. com) makes available periodically its newest releases of particle properties.
Allen’s Astrophysical Quantities by Arthur N. Cox