Zobrazeno 1 - 10
of 429
pro vyhledávání: '"Sterken C."'
Autor:
Sterken C.
Publikováno v:
Open Astronomy, Vol 20, Iss 2, Pp 195-203 (2011)
This paper covers some aspects of the life and work of the Estonian astronomer Ernst Öpik (1893-1985), who contributed to a very wide range of astronomical disciplines, and whose publications span more than 70 years. He worked in Estonia, the Soviet
Externí odkaz:
https://doaj.org/article/f8743d39b36544c9bd6435f7b8a1b322
Autor:
Sterken C.
Publikováno v:
Open Astronomy, Vol 12, Iss 4, Pp 454-462 (2003)
The fundamental problem of long-term photometric monitoring of variable stars and of multi-wavelength photometric campaigns is the problem of bringing the data to a common standard. Such homogenization can be achieved only when the measurements are m
Externí odkaz:
https://doaj.org/article/129cd25a22204be29784ce96086fb318
Autor:
Stello, D., Basu, S., Bedding, T. R., Brogaard, K., Bruntt, H., Chaplin, W. J., Christensen-Dalsgaard, J., Demarque, P., Elsworth, Y. P., García, R. A., Gilliland, R. L., Hekker, S., Huber, D., Karoff, C., Kjeldsen, H., Lebreton, Y., Mathur, S., Meibom, S., Molenda-Żakowicz, J., Noels, A., Roxburgh, I. W., Aguirre, V. S., Sterken, C., Szabó, R.
We present a brief overview of the history of attempts to obtain a clear detection of solar-like oscillations in cluster stars, and discuss the results on the first clear detection, which was made by the Kepler Asteroseismic Science Consortium (KASC)
Externí odkaz:
http://arxiv.org/abs/1007.0009
Historical optical data are combined with more recent optical, extreme ultraviolet, and X-ray data to update the spin ephemeris of the cataclysmic variable EX Hya.
Comment: 5 pages including 2 tables and 1 encapsulated postscript figure; uses ib
Comment: 5 pages including 2 tables and 1 encapsulated postscript figure; uses ib
Externí odkaz:
http://arxiv.org/abs/0902.1977
Publikováno v:
Baltic Astronomy, vol. 17, 79-86, 2008
Photometric and spectroscopic observations of the unstudied 12th-magnitude eclipsing binary GSC 04778-00152 are presented. We report the discovery of a visual companion about 1 mag fainter and 2 arcsec away from the binary. By subtracting the light c
Externí odkaz:
http://arxiv.org/abs/0809.1970
Autor:
Bono, G., Stetson, P. B., Sanna, N., Piersimoni, A., Freyhammer, L. M., Bouzid, Y., Buonanno, R., Calamida, A., Caputo, F., Corsi, C. E., Di Cecco, A., Dall'Ora, M., Ferraro, I., Iannicola, G., Monelli, M., Nonino, M., Pulone, L., Sterken, C., Storm, J., Tuvikene, T., Walker, A. R.
We present precise optical and near-infrared ground-based photometry of two Globular Clusters (GCs): Omega Cen and 47 Tuc. These photometric catalogs are unbiased in the Red Giant Branch (RGB) region close to the tip. We provide new estimates of the
Externí odkaz:
http://arxiv.org/abs/0809.0863
We present time-series photometry of nine cataclysmic variables: EI UMa, V844Her, V751 Cyg, V516 Cyg, GZ Cnc, TY Psc, V1315 Aql, ASAS J002511+1217.12, V1315 Aql and LN UMa. The observations were conducted at various observatories, covering 170 hours
Externí odkaz:
http://arxiv.org/abs/0806.1358
Autor:
Tozzi, G. P., Boehnhardt, H., Kolokolova, L., Bonev, T., Pompei, E., Bagnulo, S., Ageorges, N., Barrera, L., Hainaut, O., Kaeufl, H. U., Kerber, F., LoCurto, G., Marco, O., Pantin, E., Rauer, H., Saviane, I., Sterken, C., Weiler, M.
On 4 July 2005 at 05:52 UT, the impactor of NASA's Deep Impact (DI) mission crashed into comet 9P/Tempel 1 with a velocity of about 10 km/s. The material ejected by the impact expanded into the normal coma, produced by ordinary cometary activity. The
Externí odkaz:
http://arxiv.org/abs/0710.1040
Autor:
Bruntt, H., Stello, D., Suarez, J. C., Arentoft, T., Bedding, T. R., Bouzid, M. Y., Csubry, Z., Dall, T. H., Dind, Z. E., Frandsen, S., Gilliland, R. L., Jacob, A. P., Jensen, H. R., Kang, Y. B., Kim, S. -L., Kiss, L. L., Kjeldsen, H., Koo, J. -R., Lee, J. -A., Lee, C. -U., Nuspl, J., Sterken, C., Szabo, R.
Publikováno v:
Mon.Not.Roy.Astron.Soc.378:1371-1384,2007
We have made an asteroseismic analysis of the variable blue stragglers in the open cluster M67. The data set consists of photometric time series from eight sites using nine 0.6-2.1 meter telescopes with a time baseline of 43 days. In two stars, EW Cn
Externí odkaz:
http://arxiv.org/abs/0704.3884
Autor:
Stello, D., Bruntt, H., Arentoft, T., Gilliland, R. L., Nuspl, J., Kim, S. -L., Kang, Y. B., Koo, J. -R., Lee, J. -A., Lee, C. -U., Sterken, C., Jacob, A. P., Frandsen, S., Dind, Z. E., Jensen, H. R., Szabo, R., Csubry, Z., Kiss, L. L., Bouzid, M. Y., Dall, T. H., Bedding, T. R., Kjeldsen, H.
Asteroseismology of stellar clusters is potentially a powerful tool. The assumption of a common age, distance, and chemical composition provides constraints on each cluster member, which significantly improves the asteroseismic output. Driven by this
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702215