... We publish 16 Doppler imaging temperature maps for the years 1994-2002 of the active RS CVn star II Peg. ... Through Doppler imaging we want to study the spot evolution of the star and in particular compare this with previous results showing a cyclic spot behaviour and persistent active longitudes. ... The derived temperature maps are quite similar to the ones obtained earlier with a different methods, the main differences occurring in the spot latitudes and relative strength of the spot structures....

CHIANTI - an atomic database for emission lines. ... K.P.Dere, E.Landi, H.E.Mason, B.C.Monsignori-Fossi, P.R.Young, 1997, A , 125, 149 . Article: Available from ADS . The Arcetri Spectral Code for thin plasmas . E.Landi M.Landini 1998, A , 133, 1 . ... E.Landi, M.Landini K.P.Dere, P.R.Young, H.E.Mason, 1999, A , 135, 339 . ... K.P.Dere, E.Landi, P.R.Young, G.Del Zanna, 2001, ApJS, 134, 331 . ... G.Del Zanna, B.J.I.Bromage, E.Landi, M.Landini, 2001, A , 379, 708 . ...

... Archives . ... Magnitude [Eqn] . ... Differential Emission Measures (DEMs) are a summary of the temperature structure of the outer atmospheres (aka coronae) of stars, and are usually derived from a select subset of line fluxes. ... is called the Differential Emission Measure and is a very useful summary of the temperature structure of stellar coronae. ... Tags: DEM , Differential Emission Measure , EotW , Equation , Equation of the Week , stellar coronae . ... Comment ( RSS ) | ... Chandra Blog . ...

... An estimate the rotation period of cometary nuclei is important for understanding and describing the physical processes of the cometary activity. Unfortunately, the measurements of the rotation periods of the comet nucleus depend on the model assumptions and it is one of the main reasons for the scatter of the estimates given in various articles for a given comet. ... Right: the image of the comet 29P/Schwassmann-Wachmann 1 obtained at the 6-m telescope. ...

... The source exhibits a mas-scale structure which, according to the USNO multi-epoch monitoring at 2.3 and 8.4 GHz over the period from 1994 July through 1998 April, undergoes considerable changes in the brightness distribution and positions of the major structural features. Our image is qualitatively consistent with the structural pattern of the source. ... We note a difference of ~90 in position angles of secondary components in our image and the 5 GHz VLBI image by Shen et al. 1998). ...

documentstyle[paasms4,pptwocol]{article} \ newcommand {\ vlsr }{$v_{\mbox{\tiny LSR}}$} \ newcommand {\cmtwo}{cm$^{-2}$} \ newcommand {\Tk}{$T_{\mbox{\rm k}}$} \ newcommand {\ kms }{$\mbox{km\,s}^{-1}$} \ newcommand {\ang}{\,\AA} \begin{document} \title{ ULTRA HIGH RESOLUTION OBSERVATIONS OF INTERSTELLAR \\ Na~{\sc i} AND Ca~{\sc ii} K TOWARD THE HIGH GALACTIC LATITUDE STAR HD ... We have compared our data with 21cm emission profiles obtained from the recent Leiden/Dwingeloo H~{\sc i} survey. ...

... GAMMA RAY BURSTS . with guest Dr. Dale Frail from National Radio Astronomy Observatory . ... Gamma-Ray Bursts . A Collection of Resources to Get Behind the Headlines . Andrew Fraknoi (Foothill College & ASP) . ... This is a fine introduction to violent events in the universe by a noted astronomer, with a good section on gamma-ray bursts. ... On the Swift mission and what it is teaching astronomers about gamma-ray bursts. ... http://imagine.gsfc.nasa.gov/docs/science/know_l1/bursts.html . ...

... We present the results of our new observations of TYC 0075 01143 1, a recently discovered double-mode Scuti variable. We improved the frequencies and and pulsation amplitudes, detected the interaction frequencies , , and a possible nonradial frequency . ... The finding chart of TYC 0075 01143 1. ... Using our new observations of TYC 0075 01143 1, we improved the frequencies and , detected oscillations corresponding to interaction between and : and ; we also found a possible nonradial frequency . ...

... Column 1 gives the object name from the Case or Markarian catalogs. ... For Markarian galaxies the errors of coordinates usually lie inside 2'' (Lipovetsky [ 1983 ]). Column 4 gives the eye-estimated apparent blue magnitudes according to the same sources. ... Other names of a galaxy we give in column 7. ... In column 3 we cite the original emission-line code of the galaxy for the strength of [O III ] doublet according to the Case catalog (s - strong, m - medium, w - weak). ...

This home page belongs to small group of scientists working at . Sternberg Astronomical Institute which is a part of Moscow State University . ... Электронная библиотека научно-технической и художественной литературы (доступна только из ГАИШ) . ... Local staff . Dr. Edward Kononovich (konon -at- sai.msu.ru), Associate Professor . ... Dr. Sergey Ayukov (asv -at- sai.msu.ru), Research Fellow, Webmaster of the group . ... Jo