Radio Recombination Lines: 25 Years of Investigation

Proceedings of the 125th Colloquium of the International Astronomical Union, Held in Puschino, U.S.S.R., September 11–16, 1989

  • M. A. Gordon
  • R. L. Sorochenko

Part of the Astrophysics and Space Science Library book series (ASSL, volume 163)

Table of contents

  1. Front Matter
    Pages i-xi
  2. General Reviews

  3. Theory of Radio Recombination Lines

  4. Radio Recombination Lines from HII Regions

  5. RRLs from Planetary Nebulae and Stellar Envelopes

    1. J. Martin-Pintado, R. Bachiller, C. Thum
      Pages 161-167
    2. S. P. Tarafdar, K. M. V. Apparao
      Pages 169-173
  6. Low Frequency Recombination Lines

    1. R. L. Sorochenko, G. T. Smirnov
      Pages 189-202
    2. H. E. Payne, K. R. Anantharamaiah, W. C. Erickson
      Pages 203-208
    3. N. G. Bochkarev
      Pages 219-224
  7. Large-Scale Properties of the Galaxy

    1. Felix J. Lockman
      Pages 225-236
    2. W. M. Goss, J. H. van Gorkom, D. A. Roberts, J. P. Leahy
      Pages 249-258
    3. K. R. Anantharamaiah, H. E. Payne, D. Bhattacharya
      Pages 259-265
  8. Radio Recombination Lines from Extragalactic Objects

    1. K. R. Anantharamaiah, W. M. Goss
      Pages 267-275
  9. Conclusion of the Colloquium

    1. P. A. Shaver
      Pages 277-283
  10. Back Matter
    Pages 285-298

About this book


Text no 1
Radio Recombination Lines (RRLs), discovered in the USSR in 1964, have become a powerful research tool for astronomers. Available throughout the radio spectrum, these lines carry information regarding the density, temperature, turbulence and velocity of thermal plasmas. Their very existance shows the presence of thermal gas. They also can carry information regarding magnetic fields if Zeeman splitting were to be detected.
Containing the proceedings of an IAU Colloquium celebrating the 25th anniversary of their detection, this volume tells us what has happened since. It contains the story of the detection of RRLs and reviews of many areas of physics of the interstellargas from which stars form, HII regions excited by newly formed stars, planetary nebulae involving dying stars, and the structure of our Milky Way and other galaxies reflecting the large-scale morphology of the star formation process. In addition there is an article describing modern laboratory studies of Rydberg atoms to probe the basic physics of atomic structure, and articles describing the theory of collisions and radiation upon Rydberg atoms leading to observate effects to be used as diagnostic tools in astromony.
This book focuses on the 25 years of astronomical research with radio recombination lines (RRLs) since their discovery in 1965. It covers a wide range of topics: papers dealing with research into Rydberg atoms both in the laboratory and in the interstellar medium of our galaxy and others; papers on the interaction of radiation and atomic systems, as well as with the effects of inadiabatic collisions between these atoms and both ions and electrons. It deals with astronomical observations of atoms with `diameters' ranging from 0.08 to 50 mum a size factor of 625. It deals with RRLs in absorption, in emission and as true masers. And it deals with plasmas with temperatures ranging from 10 to greater than 104 kelvins, and with an even greater range of volume densities.
Much new work is reported, including low frequency RRLs discovered in 1980 and the maser RRLs from the star MWC349, discovered in 1989. The advent of aperture synthesis telescopes and large single-element telescopes have made possible RRL studies with high angular resolution. The sum total of the work reported here will make the volume a platform from which to search new horizons in RRL research.


Astronomical Observation Galaxy star stars stellar

Editors and affiliations

  • M. A. Gordon
    • 1
  • R. L. Sorochenko
    • 2
  1. 1.National Radio Astronomy ObservatoryTucsonUSA
  2. 2.P. N. Lebedev Physical InstituteU.S.S.R. Academic of SciencesMoscowUSSR

Bibliographic information

  • DOI
  • Copyright Information Springer Science+Business Media B.V. 1990
  • Publisher Name Springer, Dordrecht
  • eBook Packages Springer Book Archive
  • Print ISBN 978-94-010-6768-3
  • Online ISBN 978-94-009-0625-9
  • Series Print ISSN 0067-0057
  • Buy this book on publisher's site