Hostname: page-component-77c89778f8-5wvtr Total loading time: 0 Render date: 2024-07-17T12:39:37.127Z Has data issue: false hasContentIssue false
  • English
  • Français

8. Report on 21-cm. observations between l = 60° and l = 135°

Published online by Cambridge University Press:  14 August 2015

T. A. Matthews
T. A. Matthews*
Affiliation:
Harvard College Observatory, Cambridge, Mass., U.S.A.

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Observations of the 21-cm. hydrogen profiles have been taken between galactic longitudes l = 60° and l = 135°, with the 24-ft. radio telescope at the George R. Agassiz Station. The beam-width of the antenna is approximately 1°·7 between the half-power points. The electronic equipment used was a d.c. comparison radiometer, which has a signal channel with a frequency band-width of 15 kc./s. between the half-power points. At galactic latitude b = 0° the observations are generally spaced 2°·5 apart, although a few gaps of 5° exist. At b = + 15° and b = ሢ 15° the centres are 5° apart. A strip in latitude at l = 100°, and other centres at various latitudes (mainly at l = 75° and l = 87°·5) have also been taken, but little reference will be made to this material in the present paper.

Type
Part I: Spectral Line Investigations
Information
Symposium - International Astronomical Union , Volume 4: Radio Astronomy , 1957 , pp. 48 - 55
Copyright
Copyright © Cambridge University Press 1957 

References

1. Matthews, T. A. P.A.S.P. 67, 112, 1955.CrossRefGoogle Scholar
2. Westerhout, G. Unpublished communication, 1955.Google Scholar
3. Heifer, H. L. and Tatel, H. E. Ap. J. 121, 585, 1955.Google Scholar
Heifer, H. L. and Tatel, H. E. Paper read at the Princeton Meeting of the A.A.S., 1955.Google Scholar
4. Westerhout, G. This symposium publication, paper 5.Google Scholar
5. Oort, J. H., van de Hulst, H. C. and Muller, C. A. Kon. Nederl. Akad. Wetenschappen, Amsterdam , 61, no. 8, 1952.Google Scholar
6. Morgan, W. W., Whitford, A. E. and Code, A. D. Ap. J. 118, 318, 1953.CrossRefGoogle Scholar
7. Whipple, F. L. Centennial Symposia ( Harvard Obs. Mono. no. 7), p. 109, 1948.Google Scholar
8. Blaauw, A. B.A.N. 11, 459, no. 436, 1952.Google Scholar
9. Adams, W. S. Ap. J. 109, 354, 1949.Google Scholar
10. Münch, G. P.A.S.P. 65, 179, 1952.Google Scholar
11. van de Hulst, H. C., Muller, C. A. and Oort, J. H. B.A.N. 12, 117, 1954.Google Scholar
12. Shajn, G. A. and Hase, V. F. Pub. Crimean Astrophysical Observatory , 10, 152, 1953.Google Scholar