... Several thousands of sp ectral lines have b een recognized but only ab out 200 of them can b e measured with sufficient exactness and used for analysis of physical conditions in nebulae. ... 4.1 Recombination line intensities In the sp ectra of nebulae there are observed the sp ectral lines of allowed transitions b etween excited states of H, He, C, N and O. Some lines of such typ es are detected for the ions having lower abundances (see Table 25), say for Ne, Si and Mg. ...
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Ссылки http://www.astro.spbu.ru/staff/afk/AtDatCentre/AtDatCat/Chapter4.pdf -- 95.9 Кб -- 19.11.2010 Похожие документы
... Introduction It may seem counterintuitive that X-ray astronomy should give any insights into planetary systems: planets, and their natal protoplanetary disks (PPDs), have temperatures which are far to o co ol (100 - 1500 K) to emit X-rays. ... The resulting X-ray emission gives unique insights into the solar activity, planetary atmospheres, cometary comae, charge exchange physics, and space weather across the Solar System (review by Bhardwa j et al. 2007). ... 2007; Gudel 2007). ... 2007, Planet. ...
... Solar X-rays: . ... http://sec.noaa.gov/Data/#reports . ... http://dxlc.com/solar/(!) -10cm and sunspots charts, latest flare reports . ... AP = alpha*p All the magnetic measures in the group are of the same polarity which is that corresponding to the preceding spots in that hemisphere for that cycle. ... Statements will be added to the above classification if the group is also of the "D = delta-configuration": spots of opposite polarity within 2 1/2 degrees of one another and in the same penumbra. ...
Subj: Non-detection of Fragment B We are observing at Palomar with the 200-inch Hale telescope, using a 7.9 micron imaging spectrometer in imaging mode and a 256x256 InSb at 2.35 microns. ... Subj: Negative observations of B impact from ESO La Silla Continuing observations with TIMMI at 9um on the 3.5m telescope and IRAC 2B at 2.2um on the 2.2m at ESO La Silla show that nothing was seen over the predicted impact site B up to 3:35UT, 17 July. ... The impact site has also been monitored at 2.20 microns. ...
... INVESTIGATION OF JOINT EFFECT OF TWO . MECHANISMS OF PROBE WAVE ANOMALOUS ATTENUATION . ... As it follows from the title of our paper, I shall speak about two mechanisms of anomalous attenuation, one of the basic effects been observed under ionospheric heating by powerful HF waves. ... The second mechanism of anomalous attenuation is multiple scattering. ... Perhaps, anomalous attenuation been observed at Arecibo will be easier explained by multiple scattering mechanism. ... O-wave only . ...
... МЦНМО , 2002 . Глава 10. ... Оглавление | ... Докажите, что в любом треугольнике сумма длин высот меньше периметра. ... Докажите, что его площадь больше 1/2. ... В треугольнике ABC высота AM не меньше BC , а высота BH не меньше AC . Найдите углы треугольника ABC . ... Докажите, что . ... Пусть a < b . ... Докажите, что тогда h a + h b + h c ? ... Copyright 2002 МЦНМО . ... Исправленные исходные файлы книги и файлы нового издания доступны со страницы автора . Заказ книги: biblio@mccme.ru . ...
REPORT LOFAR Scientific Applications Summary author document version date page M.P. van Haarlem Report ASTRON-LOFAR-00230 1.00 07-03-01 1 of 1 This document contains a description of the Science Case for the Low Frequency Array (LOFAR) an advanced digital radio telescope that will operate in the frequency range from ~10 to ~250 MHz. The instrument will be developed by ASTRON (Dwingeloo, The Netherlands) and the Astronomical Community in the Netherlands, MIT/Haystack Observatory (W estford MA, US) and the
... Any of you who are new to the AAAP should take time to chat with one of the officers or other members of the club to find out more about our remote observatory up in the Jenny Jump State Park near Hope, New Jersey. ... What a night at Jenny. ... If you want to catch a few more glimpses there is a nice set of images on the Sky and Telescope web site under Aurora Delights. ... Another service is provided by Sky and Telescope at http://skyandtelescope.com/observing/ proamcollab/astroalert/default.asp. ...
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Ссылки http://www.princetonastronomy.org/newsletters/octnewsletter.pdf -- 1209.7 Кб -- 27.04.2003 Похожие документы
... Observing . ... Home Articles Observer Reports Archive . ... Clear Sky Chart . ... Our Sun . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Observer Reports Archive . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...
... Кононовича Э.В. Изд.4 2009. 432 с. УРСС Серия: Физико-математическое наследие: физика (астрономия) . ... Кононович Э.В., Миронова И.В. (Kononovich, E. V., Mironova, I.V.) The Wolf number and total solar irradiance variations during 21 23 solar cycles Astronomical and Astrophysical Transactions, vol. ... Чумак О . ... Красоткин С.А, Чумак О.В., Кононович Э.В., Krasotkin S.A., Chumak O.V., Kononovich E.V. - State Variables for Solar Active Regions. ... Кононович Э.В , Рос З. Kononovich E.V., R.M.Ros. ...
НОВОСТИ ФЕДЕРАЦИЯ ЭНЦИКЛОПЕДИЯ ИСТОРИЯ СТАНЦИЯ МИР ENGLISH . ... Биографич. энциклопедия . ... ХРОНИКА . ... Хроника освоения космоса . ... МТКК выведен на орбиту с параметрами: наклонение орбиты - 28,44 град.; период обращения - 91,04 мин.; минимальное расстояние от поверхности Земли (в перигее) - 191 км.; максимальное расстояние от поверхности Земли (в апогее) - 460 км. ... Под эгидой Федерации космонавтики России. А.Железняков , 1997-2009. Энциклопедия "Космонавтика". ...
Statistics of sunspot activity . The sunspot indices . ... The solar regions . ... 1991 . ... April . ... April, 1991 . Visual indices of solar activity by author's observations . ... Average . ... 100 . ...
... Up: Distributed Data Systems, Data Mining . ... Space Telescope Science Institute, 3700 San Martin Drive, . ... We are now developing a distributed information service for the space sciences--ISAIA--which covers many different subdisciplines with datasets of common interest and which will improve the researcher's abilities to locate and use data from a wide variety of on-line resources. ... Many of the data systems and services that we use today in astronomy are distributed systems . ...
... Небо над Томском . ... Астрономические наблюдения в Томске . ... При чистом небе интересно наблюдать заход Венеры, которая в это время переливается всеми цветами радуги. ... Еще одним из интересных явлений недели станет покрытие Луной звездного скопления Плеяды, прекрасно видимое на широте Томска. ... Комета Broughton (C/2006 OF2) имеет наблюдаемый блеск 10.8 m. На этой неделе ее можно наблюдать в созвездии Рыси при помощи бинокля или телескопа на протяжении всей ночи на северо-востоке. ...