Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-26T14:25:33.289Z Has data issue: false hasContentIssue false

Observational evidence for polar spots

Published online by Cambridge University Press:  25 May 2016

Klaus G. Strassmeier*
Affiliation:
Institut für Astronomie Universität Wien Türkenschanzstraße 17 A-1180 Wien, Austria

Abstract

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.

“Are results from ill-posed problems, like Doppler-imaging, conclusive at all?” and “Could polar spots be simple image-reconstruction artifacts?” are often asked questions. Although I can not definitively answer them, I will present observational evidence for the existence of cool starspots at or very near a stellar rotation pole.

Type
Session III: “Photospheric Phenomena: Results”
Copyright
Copyright © Kluwer 1996 

References

Collier Cameron, A., 1995, MNRAS 275, 534 Google Scholar
Collier Cameron, A., Unruh, Y. C., 1994, MNRAS 269, 814 Google Scholar
Dempsey, R. C., Bopp, B. W., Strassmeier, K. G., Granados, A. F., Henry, G. W., Hall, D. S., 1992, ApJ 392, 187 Google Scholar
Donati, J. F., Brown, S. F., Semel, M. et al., 1992, A&A 265, 682 Google Scholar
Gondoin, P., 1986, A&A 160, 73 Google Scholar
Hatzes, A. P., 1993, ApJ 410, 777 Google Scholar
Hatzes, A. P., 1995a, AJ 109, 350 Google Scholar
Hatzes, A. P., 1995b, in Strassmeier, K. G. (ed), Poster Proceedings: Stellar Surface Structure , IAU Symp. 176, Univ. Vienna, p. 87 Google Scholar
Hatzes, A. P., 1995c, in Strassmeier, K. G. (ed), Poster Proceedings: Stellar Surface Structure , IAU Symp. 176, Univ. Vienna, p. 90 Google Scholar
Hatzes, A. P., 1995d, ApJ 451, 784 Google Scholar
Hatzes, A. P., Vogt, S. S., Ramseyer, T. F., Misch, A., 1995, in Strassmeier, K. G. (ed), Poster Proceedings: Stellar Surface Structure , IAU Symp. 176, Univ. Vienna, p. 9 Google Scholar
Hatzes, A. P., Vogt, S. S., 1992, MNRAS 258, 387 Google Scholar
Hempelmann, A., Hatzes, A. P., Kürster, M., Patkós, L., 1995, in Strassmeier, K. G. (ed), Poster Proceedings: Stellar Surface Structure , IAU Symp. 176, Univ. Vienna, p. 194 Google Scholar
Hubl, B., Strassmeier, K. G., 1995, in Strassmeier, K. G. (ed), Poster Proceedings: Stellar Surface Structure , IAU Symp. 176, Univ. Vienna, p. 96 Google Scholar
Jankov, S., Donati, J.-F., 1995, in Huang, L. et al. (eds), Proc. of the 4th Workshop on MUSICOS, ESA-ESTEC, p. 143 Google Scholar
Joncour, I., Bertout, C., Bouvier, J., 1994a, A&A 291, L19 Google Scholar
Joncour, I., Bertout, C., Menard, F., 1994b, A&A 285, L25 Google Scholar
Kurucz, R. L., 1991, in Davis Philip, A. G., et al. (eds), Precision Photometry: Astrophysics of the Galaxy , Schenectady, Davis, p. 27 Google Scholar
Kurucz, R. L., Furenlid, I., Brault, J., Testerman, L., 1984, Solar Flux Atlas from 296 to 1300 nm , NSO Atlas No. 1 Google Scholar
Kürster, M., Dennerl, K., 1993, in Linsky, J. F. & Serio, S. (eds), Physics of Solar and Stellar Coronae , Kluwer Academic Publishers, Netherlands, p. 443 Google Scholar
Kürster, M., Hatzes, A. P., Pallavicini, R., Randich, S., 1992, in Giampapa, M. S. & Bookbinder, J. A. (eds.), Seventh Cambridge Workshop, Cool Stars, Stellar Systems, and the Sun , PASPC 26, p. 249 Google Scholar
Kürster, M., Schmitt, J. H. M. M., Cutispoto, G., 1994, A&A 289, 899 Google Scholar
Maceroni, C., Vilhu, O., van't Veer, F., Van Hamme, W., 1994, A&A 288, 529 Google Scholar
Noah, P. V., Bopp, B. W., Fekel, F., 1987, in Linsky, J. L. & Stencel, R. E. (eds), Fifth Cambridge Workshop, Cool Stars, Stellar Systems, and the Sun , Springer, p.506 CrossRefGoogle Scholar
Oláh, K., Budding, E., Butler, C. J., Houdebine, E. R. et al., 1992, MNRAS 259, 302 Google Scholar
Oláh, K., Pettersen, B. R., 1991, A&A 242, 443 Google Scholar
Petrov, P. P., Gullbring, E., Gahm, G., et al., 1995, in Strassmeier, K. G. (ed), Poster Proceedings: Stellar Surface Structure , IAU Symp. 176, Univ. Vienna, p. 217 Google Scholar
Pettersen, B. R., Olah, K., Sandmann, W. H., 1992, A&AS 96, 497 Google Scholar
Piskunov, N. E., Huenemoerder, D. P., Saar, S. H., 1994, in Caillault, J. P. (ed), Eight Cambridge Workshop, Cool Stars, Stellar Sytems, and the Sun , PASPC 64, p. 658 Google Scholar
Piskunov, N. E., Tuominen, I., Vilhu, O., 1990, A&A 230, 363 Google Scholar
Ramseyer, T. F., Hatzes, A. P., Jablonski, F., 1995, AJ 110, 1364 Google Scholar
Rice, J. B., Strassmeier, K.G., 1996, A&A, (in press) Google Scholar
Saar, S. H., Piskunov, N. E., Tuominen, I., 1994, in Caillault, J. P. (ed), Eight Cambridge Workshop, Cool Stars, Stellar Systems, and the Sun , PASPC 64, p. 661 Google Scholar
Stift, M. J., 1995, private comm.Google Scholar
Stift, M. J., Strassmeier, K. G., 1995, in Strassmeier, K. G. (ed), Poster Proceedings: Stellar Surface Structure , IAU Symp. 176, Univ. Vienna, p. 29 Google Scholar
Stout, N., Vogt, S. S., 1996, this proceedings Google Scholar
Strassmeier, K. G., 1990, ApJ 348, 682 Google Scholar
Strassmeier, K. G., 1994, A&A 281, 395 Google Scholar
Strassmeier, K. G., 1996, A&A, (in press) Google Scholar
Strassmeier, K. G., Rice, J. B., Wehlau, W. H. et al., 1991, A&A 247, 130 Google Scholar
Strassmeier, K. G., Rice, J. B., Wehlau, W. H. et al., 1993, A&A 268, 671 Google Scholar
Strassmeier, K. G., Welty, A. D., Rice, J. B., 1994, A&A 285, L17 Google Scholar
Strassmeier, K. G., Dempsey, R. C., Rice, J. B., 1996, A&A (submitted) Google Scholar
Unruh, Y. C., Collier-Cameron, A., Guenther, E., 1995, in Strassmeier, K. G. (ed), Poster Proceedings: Stellar Surface Structure , IAU Symp. 176, Univ. Vienna, p. 93 Google Scholar
Unruh, Y. C., Collier Cameron, A., 1995, MNRAS 273, 116 Google Scholar
Vogt, S. S., 1988, in Carel de Strobel, G. & Spite, M. (eds.), IAU Symp. 132, The Impact of Very High S/N Spectroscopy on Stellar Physics , Kluwer Academic Publishers, p.253 Google Scholar
Vogt, S. S., Hatzes, A. P., 1990, in Tuominen, I., Moss, D., Rüdiger, G. (eds), IAU Coll. 130, The Sun and Cool Stars: Activity, Magnetism, Dynamos , Springer Verlag, p. 297 Google Scholar
Vogt, S. S., Hatzes, A. P., 1996, this proceedings Google Scholar
Vogt, S. S., Penrod, G. D., 1983, PASP 95, 565 Google Scholar