Abstract
WE have been monitoring the 2- and 3-µm spectral regions of Nova Cygni 1975 at irregular intervals. Shortly after maximum, these spectral regions were dominated by the lines of hydrogen and a few of neutral helium superposed on a continuum presumably of free–free radiation. These spectra could be quantitatively interpreted on traditional recombination theory1, assuming a temperature of ∼ 104 K. Beginning with a spectrum obtained on September 29, 1975 a number of additional lines have appeared in the spectrum. These new lines have increased in strength so that in our most recent data they nearly dominate these spectral regions. These two phases of the spectral development of Nova Cygni 1975 are illustrated for the 2- and 3-µm spectral regions in Figs 1 and 2.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Brocklehurst, M., Mon. Not. R. astr. Soc., 153, 471–490 (1971).
Münch, G., Neugebauer, G., and McCammon, D., Astrophys. J., 149, 681–686 (1967).
Olsen, K. H., Anderson, C. R., and Stewart, J. N., Solar Phys., 21, 360–371 (1971).
McLaughlin, D. B., Astrophys. J., 118, 27–34 (1953).
Edlén, B., Solar Phys., 24, 356–357 (1972).
Edlén, B., Solar Phys., 9, 439–445 (1969).
Ekberg, J. O., and Svensson, L. A., Phys. Scripta, 2, 283–297 (1970).
Moore, C. E., in Atomic Energy Levels, 1 (US Government Printing Office, Washington, DC, 1949).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
GRASDALEN, G., JOYCE, R. Coronal lines in near infrared spectrum of Nova Cygni 1975. Nature 259, 187–189 (1976). https://doi.org/10.1038/259187a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/259187a0
This article is cited by
-
Near infrared coronal line emission in Nova Herculis 1991
Journal of Astrophysics and Astronomy (1993)
-
Origine des raies coronales des novae
Astrophysics and Space Science (1980)
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.
