表主动
发表于 2025-3-27 00:53:06
https://doi.org/10.1007/978-3-642-61435-4 solar-type stars) and similarly high fluxes of chromospheric and transition region line fluxes compared to the Sun (Stern et al.1981, Zolcinski et al. 1981, 1982). A giant x-ray flare from a spectroscopic binary system in the Hyades has also been reported (Stern, Antiochos and Underwood 1982).
Flat-Feet
发表于 2025-3-27 03:07:54
Stefan Roth,Anna Priester,Christopher Pützernational Astronomical Union on “Activity in Red-Dwarf Stars”. First of all let me thank all of you for accepting our invitation to attend the Opening Ceremony. Such an impressive gathering of so many distinguished astrophysicists from all over the world is in itself a reward for all of us in the S
insular
发表于 2025-3-27 08:13:16
Stefan Roth,Anna Priester,Christopher Pützdetermined for quiescent conditions. The interrelations between these quantities are compared to the results of theoretical investigations for low mass stars. The evolutionary state of flare stars is discussed. Observational results from spectroscopic and photometric methods to determine the rotatio
mechanical
发表于 2025-3-27 12:53:39
https://doi.org/10.1007/978-3-8348-8251-6olor indices B-V, V-R, etc. for each spectral type. Such a table relates the observed colors of unreddened stars to their temperature classes and enables one to draw a reference line representing the main sequence on any color-color diagram.
Commemorate
发表于 2025-3-27 16:43:21
Automatisierung von Führungsentscheidungen Cen A, α Cen B and ε Eri. The EUV observations are combined with X-ray fluxes to predict the coronal temperatures, the electron pressures and energy lost or transferred by radiation and thermal conduction
SNEER
发表于 2025-3-27 19:58:26
http://reply.papertrans.cn/15/1444/144311/144311_36.png
synovium
发表于 2025-3-27 21:55:06
http://reply.papertrans.cn/15/1444/144311/144311_37.png
Repetitions
发表于 2025-3-28 03:34:34
Speicherprogrammierbare Steuerungen. We now have observed a sufficient number of the nearby M-dwarfs to determine an X-ray luminosity function and we have explored the activity and variability of these stars to the extent of observing, for the first time, X-ray flares with simultaneous ground-based optical and IUE ultraviolet coverag
混合
发表于 2025-3-28 08:30:37
https://doi.org/10.1007/978-3-642-61435-4. The coronal X-ray, chromospheric ultraviolet, and auxiliary optical properties of sets of these stars are tabulated or illustrated in several ways. Factors of stellar duplicity are shown to be quite prevalent in presenting the observations. The most luminous X-ray dwarfs below the Sun are strongly
fabricate
发表于 2025-3-28 12:44:08
Speicherprogrammierbare Steuerungenre characterized by the presence of chromospheric emission lines like H. and CaII H and K which are present even during the quiescent state. The presence of transition regions and coronae have been inferred from the detection of UV emission lines like NV, CIV, SilV etc. with IUE and X-ray observatio