Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-05T10:32:40.682Z Has data issue: false hasContentIssue false

Flare Spectra in Dwarf Stars

Published online by Cambridge University Press:  14 August 2015

Alfred H. Joy*
Affiliation:
Mount Wilson and Palomar Observatories, Pasadena, California, 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.

Observational evidence of transient flares which produce conspicuous changes in the total brightness and in the spectra of dwarf stars is limited, at present, to a small number of faint late-type stars. The outbursts take place with extraordinary rapidity and the duration is usually only a few minutes or hours. Accompanying spectral changes such as veiled and fuzzy absorption lines, greatly increased intensity of the bright lines of hydrogen and helium, and the appearance of an emission continuum shortward of λ 3750, have been reported.

Type
I. Instability in Dwarf Stars of Later Type: T Tauri Stars and Related Objects, and The UV Ceti Variables
Copyright
Copyright © Cambridge University Press 1957 

References

1. Herbig, G. H., Publ. A.S.P. 60, 256 (1948).CrossRefGoogle Scholar
2. Struve, O. and Swings, P., Publ. A.S.P. 60, 61 (1948).CrossRefGoogle Scholar
3. Herbig, G. H., Ap.J. 119, 483 (1954).CrossRefGoogle Scholar
4. Haro, G. and Herbig, G. H., Bol. Obs. Tonantzintla y Tacubaya, No. 12, 33 (1955).Google Scholar
5. Joy, A. H. and Humason, M. L., Publ. A.S.P. 61, 133 (1949).CrossRefGoogle Scholar
6. Joy, A. H., Ap.J. 120, 377 (1954).CrossRefGoogle Scholar
7. Lenouvel, F. and Golay, M., Comptes rendus, 237, 1215 (1953).Google Scholar