Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Letter
  • Published:

Detection of a New Microwave Spectral Line

Nature volume 215, pages 40–41 (1967)Cite this article

Abstract

AFTER the radioastronomical detection1 of helium in 1966 a programme to study the 109α transition of neutral helium was begun at the US National Radio Astronomy Observatory, and helium has now been detected in five sources (as will be described elsewhere). During the course of this work, however, unidentified microwave spectral emission has also been detected in the sources NGC 2024 and IC 1795. This communication describes the observed physical characteristics of this emission, considers its possible origins and suggests further observations to identify it. In the succeeding communication, Goldberg and Dupree argue that the new line is a recombination line of carbon I.

This is a preview of subscription content, access via your institution

Access options

Buy this article

  • Purchase on Springer Link
  • Instant access to full article PDF
Buy now

Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others

References

  1. Lilley, A. E., Palmer, P., Penfield, H., and Zuckerman, B., Nature, 211, 174 (1966).

    Article  ADS  CAS  Google Scholar 

  2. Zuckerman, B., Palmer, P., Penfield, H., and Lilley, A. E., Astrophys. J. (in the press).

Download references

Author information

Authors and Affiliations

  1. Harvard University,

    PATRICK PALMER, B. ZUCKERMAN, H. PENFIELD & A. E. LILLEY

  2. National Radio Astronomy Observatory,

    P. G. MEZGER

Authors
  1. PATRICK PALMER
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. B. ZUCKERMAN
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. H. PENFIELD
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. A. E. LILLEY
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. P. G. MEZGER
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

PALMER, P., ZUCKERMAN, B., PENFIELD, H. et al. Detection of a New Microwave Spectral Line. Nature 215, 40–41 (1967). https://doi.org/10.1038/215040a0

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1038/215040a0

This article is cited by

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

Search

Advanced search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing