Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Rainer Kracht"'
Autor:
Zdenek Sekanina, Rainer Kracht
The goal of this investigation is to reinterpret and upgrade the astrometric and other data on comet C/1945 X1, the least prominent among the Kreutz system sungrazers discovered from the ground in the 20th century. The central issue is to appraise th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd7cdf2d1a23df0e1d42f0479f939a41
Autor:
Rainer Kracht, Zdenek Sekanina
We investigate the relationships among the angular orbital elements --- the longitude of the ascending node, Omega, the inclination, i, and the argument of perihelion, omega --- of the Kreutz system's faint, dwarf sungrazers observed only with the SO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::697148d1e62cc4fee2eec37bb147e330
http://arxiv.org/abs/1409.3618
http://arxiv.org/abs/1409.3618
The Kreutz family of sungrazing comets contains over 2~000 known members, many of which are believed to be under $\sim 100$~m sizes (\textit{mini~comets}) and have only been studied at small heliocentric distances ($r_\mathrm{H}$) with space-based SO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e2b9dec63bc90067055ded4143041e2
Autor:
Zdenek Sekanina, Rainer Kracht
We examine properties of the population of SOHO/STEREO (dwarf) Kreutz sungrazing comets from 2004 to 2013, including the arrival rates, peculiar gaps, and a potential relationship to the spectacular comet C/2011 W3 (Lovejoy). Selection effects, influ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2181b3ba978bb1bb2a711e8b3298a87
http://arxiv.org/abs/1308.3901
http://arxiv.org/abs/1308.3901
Autor:
Steven B. Charnley, Zdenek Sekanina, Rainer Kracht, Timm-Emmanuel Riesen, Iain Coulson, Jan Kleyna, Stefanie N. Milam, Karen J. Meech, Jacqueline V. Keane
Publikováno v:
The Astrophysical Journal. 831:207
We report submillimeter 450 and 850 μm dust continuum observations for comet C/2012 S1 (ISON) obtained at heliocentric distances 0.31–0.08 au prior to perihelion on 2013 November 28 (rh = 0.0125 au). These observations reveal a rapidly varying dus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be0128f442017435bc8eac48bb75fe5d
https://doi.org/10.3847/0004-637x/831/2/207
https://doi.org/10.3847/0004-637x/831/2/207
Autor:
Zdenek Sekanina, Rainer Kracht
Publikováno v:
The Astrophysical Journal. 823:2
We present the history of investigation of the dynamical properties of pairs and groups of genetically related long-period comets (other than the Kreutz sungrazing system). Members of a comet pair or group move in nearly identical orbits and their or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::170770616e39f3cc9ac7fd3399105f4a
https://doi.org/10.3847/0004-637x/823/1/2
https://doi.org/10.3847/0004-637x/823/1/2
Autor:
Jacqueline V. Keane, Stefanie N. Milam, Iain M. Coulson, Jan T. Kleyna, Zdenek Sekanina, Rainer Kracht, Timm-Emmanuel Riesen, Karen J. Meech, Steven B. Charnley
Publikováno v:
Astrophysical Journal; 11/10/2016, Vol. 831 Issue 2, p1-1, 1p
Autor:
Zdenek Sekanina, Rainer Kracht
Publikováno v:
Astrophysical Journal; 3/10/2015, Vol. 801 Issue 2, p1-1, 1p