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The development of the new Be phase of 59 Cyg in the visual and in the far UV in 1978-1983

Authors :
Doazan, V
Grady, C. A
Snow, T. P
Peters, G. J
Marlborough, J. M
Source :
Astronomy and Astrophysics. 152(2)
Publication Year :
1985
Publisher :
United States: NASA Center for Aerospace Information (CASI), 1985.

Abstract

A tentative synthesis of visual and IUE observations of 59 Cyg during 1978-1983 when the new Be phase began to develop is presented. The study reveals correlation between those spectral features originating in the cool H-alpha-emitting envelope and features originating in superionized regions exhibiting C IV and N V lines. The long-term variability patterns of the V/R ratio, the H-alpha emission, and the C IV absorption reveal striking similarities and a close correlation. The early development of the new Be phase is accompanied by remarkably large and striking C IV line-profile changes. It is also suggested that short-term V/R variations at H-alpha may be associated with short-term C IV changes.

Subjects

Subjects :
Astrophysics

Details

Language :
English
ISSN :
00046361
Volume :
152
Issue :
2
Database :
NASA Technical Reports
Journal :
Astronomy and Astrophysics
Notes :
NSG-5300, , NATO-628/84, , NAS5-25774, , NSG-5422, , NAS5-26409
Publication Type :
Report
Accession number :
edsnas.19860035443
Document Type :
Report