Evidence for coronal activity cycles on 61 Cygni A and B

Astronomy and Astrophysics

Volumn 406, Issue 2, 2003, Pages

  Hempelmann, A ^a   Schmitt, J H M M ^a   Baliunas, S L ^b   Donahue, R A ^b  

^a UNIVERSITY OF HAMBURG   (Germany)

^b HARVARD SMITHSONIAN CENTER FOR ASTROPHYSICS   (United States)

Author keywords

Stars: Activity; Stars: Chromospheres; Stars: Coronae; Stars: Late type

Indexed keywords

CALCIUM; LIGHT SCATTERING; LIGHT SOURCES; SOLAR SYSTEM; SURFACES; X RAYS;

CHROMOSPHERIC VARIABILITY; CORONAL ACTIVITY CYCLES; STARS; X RAY LIGHT CURVES;

ASTROPHYSICS;

EID: 0042705442     PISSN: 00046361     EISSN: None     Source Type: Journal    
DOI: 10.1051/0004-6361:20030882     Document Type: Letter

References (12)

1. Baliunas, S. L., Donahue, R. A., Soon, W. H., et al. 1995, ApJ, 438, 269
2. Chandra, S., Lean, J. L., White, O. R., et al. 1995, Geoph. Res. Lett., 22, 2481
3. Hempelmann, A., Schmitt, J. H. M. M., & Stȩpień, K. 1996, A&A, 305, 284
4. Keil, S. L., & Worden, S. P. 1984, ApJ, 276, 766
5. Kreplin, R. W. 1970, Ann. Géophys., 26, 567
6. Perryman, M. A. C., Lindegren, L., Kovalevsky, J., et al. 1997, A&A, 323, L49
7. Pizzolato, N., Maggio, A., Micela, G., Sciortino, S., & Ventura, P. 2003, A&A, 397, 147
8. Schmitt, J. H. M. M., & Liefke, C. 2003, A&A, in press
9. Schrijver, C. J. 1983, A&A, 127, 289
10. Stȩpień, K., & Ulmschneider, P. 1989, A&A, 216, 319
11. White, O. R., & Livingston, W. C. 1981, ApJ, 249, 798
12. Wilson, O. C. 1978, ApJ, 226, 379