Zobrazeno 1 - 10
of 11 300
pro vyhledávání: '"Cha, I."'
Autor:
Bobylev, Vadim V., Bajkova, Anisa T.
The trajectories of the clusters $\eta$ Cha, $\epsilon$ Cha and Cha I, Cha II, constructed backward in time, have been studied. We concluded that the hypothesis about the joint formation of all four of these clusters from one molecular cloud cannot b
Externí odkaz:
http://arxiv.org/abs/2404.00669
Akademický článek
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Autor:
Bobylev, V. V., Bajkova, A. T.
Publikováno v:
Research in Astronomy & Astrophysics; May2024, Vol. 24 Issue 5, p1-7, 7p
The star-forming regions in Chamaeleon (Cha) are among the nearest (distance ~165 pc) and youngest (age ~2 Myrs) conglomerates of recently formed stars and among the ideal targets for studies of star formation. We search for new, hitherto unknown bin
Externí odkaz:
http://arxiv.org/abs/1307.1082
Publikováno v:
Astron.Astrophys. 423 (2004) 1029-1044
We report on a 30ksec XMM-Newton observation of the central region of the Cha I star forming cloud. Virtually all known T Tauri star members and most of the very-low mass objects including two bona-fide brown dwarfs (spectral types M7.5 and M8) are d
Externí odkaz:
http://arxiv.org/abs/astro-ph/0404194
Autor:
Brossard, Jean, Leuridan, Christophe
Publikováno v:
Annals of Probability 2007, Vol. 35, No. 2, 715-731
Nous \'{e}tudions les cha\^{{\i}}nes de Markov $(X_n)_{n\in\mathbf{Z}}$ gouvern\'{e}es par une relation de r\'{e}currence de la forme $X_{n+1}=f(X_n,V_{n+1})$, o\`{u} $(V_n)_{n\in\mathbf{Z}}$ est une suite de variables al\'{e}atoires ind\'{e}pendante
Externí odkaz:
http://arxiv.org/abs/0707.3860
Autor:
Joergens, V., Guenther, E. W.
Based on high-resolution UVES spectra we found that the radial velocity (RV) dispersion of nine of twelve known young bona fide and candidate brown dwarfs in the Cha I dark cloud is 2.0 km/s, i.e. significantly smaller than the RV dispersion of T Tau
Externí odkaz:
http://arxiv.org/abs/astro-ph/0110175
Autor:
Joergens, V., Guenther, E., Neuhäuser, R., Comerón, F., Huélamo, N., Alves, J., Brandner, Wolfgang
How frequent are brown dwarf binaries? Do brown dwarfs have planets? Are current theoretical pre-main-sequence evolutionary tracks valid down to the substellar regime? - Any detection of a companion to a brown dwarf takes us one step forward towards
Externí odkaz:
http://arxiv.org/abs/astro-ph/0106185
Autor:
Hervé, Loïc
Publikováno v:
Annales de l'Institut Henri Poincar\'e - Probabilit\'es et Statistiques 2008, Vol. 44, No. 2, 280-292
Let $Q$ be a transition probability on a measurable space $E$ which admits an invariant probability measure, let $(X_n)_n$ be a Markov chain associated to $Q$, and let $\xi$ be a real-valued measurable function on $E$, and $S_n=\sum _{k=1}^n\xi(X_k)$
Externí odkaz:
http://arxiv.org/abs/0805.3418
Autor:
Neuhaeuser, Ralph, Comeron, Fernando
We obtained medium-resolution spectra of the bona-fide brown dwarf Cha H$\alpha$ 1, the five brown dwarf candidates Cha H$\alpha$ 2 to 6, two additional late M-type brown dwarf candidates, all originally selected by H$\alpha$ emission, and four previ
Externí odkaz:
http://arxiv.org/abs/astro-ph/9908265