... Индексы солнечной активности . ... Солнечные регионы . ... Описание солнечных регионов . ... Очередное появление солнечного региона 10917. ... Новая группа, появившаяся 31 декабря 2006 года около региона 10933, по другую сторону солнечного экватора. ... Приэкваториальная биполярная группа, возникшая 20 января 2007 года вблизи региона 10938, в западной части солнечного диска. ... В окрестностях солнечного меридиана суммарная площадь региона достигала 300 м.д.п. Продолжение биполярной группы 10933. ...
... Каждая новая гипотеза должна сопровождаться хотя бы несколькими предсказаниями. ... Между орбитами планет-гигантов должны быть кометные пояса, при этом совокупная масса комет, расположенных между орбитами Урана и Нептуна, должна превышать совокупную массу комет второго кометного пояса, расположенного между орбитами Сатурна и Урана. ... На орбитах вокруг планет-гигантов должно находится значительное количество мелких спутников. ... ЭВОЛЮЦИЯ СОЛНЕЧНОЙ СИСТЕМЫ. ПРОИСХОЖДЕНИЕ СОЛНЕЧНОЙ СИСТЕМЫ. ...
... Flux density at 1 GHz (/Jy): 56 . ... Notes: This is the remnant of the Tycho's SN of AD 1572. Radio: Shell, brightest to the NE. ... 1982, MNRAS, 200, 473. ... 1982, ApJ, 257, 145. ... Radio at 2.7 GHz (4'') from 1980 and 1983, and One-Mile Telescope at 1.4 GHz (23'') from 1965 and 1980, for expansion. ... VLA H I absorption observations towards central radio source. ... WSRT and Effelsberg 100-m at 1.4 GHz (50''), and VLA at 1.4 GHz (13''), for neutral hydrogen studies. ... 2010, ApJ, 715, L146. ...
... GALAXY: A galaxy is made up of billions or trillions of stars bound together by their own gravity. ... HELIUM (He): The second element in the periodic table, has 2 protons, 2 neutrons, and is a noble gas. ... Helium melts at -272.2 degrees Celsius, and boils at -268.934 degrees Celsius. ... HYDROGEN (H): The first element on the periodic table, is a gas, and has an atomic mass of 1.00794 amu. ... Hydrogen melts at -259.34 degrees Celsius, and freezes at -252.87 degrees Celsius. ...
... разработка теории и методов расчета лучевых дифференциалов первого, второго и третьего порядков в градиентных оптических системах; . ... разработка методов расчета геометрических аберраций второго и третьего порядка осесимметричных оптических систем, содержащих асферические поверхности и градиентные среды типа "псевдоаксикон"; . ... получены формулы для расчета смещения изображения и геометрических аберраций второго порядка в градиентных оптических системах с малыми нарушениями осевой симметрии; . ...
... Imaging of the core of the OMC-1 region using NICMOS camera 2 through the F212N and F215N filters shows a wide variety of interesting structure on scales of 0.2" at a very high dynamic range (Stolovy et al. ... The application of image restoration techniques, including multi-channel variants of the Richardson-Lucy technique, offers the chance to enhance structure on the finest scales and also to suppress the prominent and richly structured point-spread functions of the many bright stars in the...
... Since the reddening found for the stars in Table 13 was small, no reddening correction was attempted. ... These diamonds indicate the positions of very low mass, 3 Myr old, objects from the work of Burrows et al. ... This optical V versus R - I scheme is a very powerful method of detecting very low mass (VLM) objects. ... Because of this, young brown dwarfs are intrinsically no more difficult to observe in the optical than low mass stars at the age of Orionis. ...
Observational Stellar Astronomy . Articles | ... We are made of star stuff" . ... TEMPERATURE OF A STAR: . ... The temperature of a star can be found out easily by simple observations. ... STAR . ... SPECTRAL CLASS: . All the stars in this universe are divided in to spectral classes based on their spectral lines. ... The spectral class of a star and the temperature of a star are related. So the spectral class can be found for a star since we know its temperature. ... www.astronomy.net . ...
Supernova 2006fp in UGC 12182 . This page is devoted to information on Supernova 2006fp in UGC 12182 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. ... This turns out to be a blue variable (in UGC 12182), and not a supernova. ... Image Credit . ... Wolfgang Kloehr image . 2006/09/09.076 . 17.4 . ...
... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it’s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...
... The Science Archive for the Extreme Ultraviolet Explorer ( EUVE ) satellite is using the World Wide Web (WWW) client/server software model as the cornerstone for the dissemination of EUVE archival material. A number of on-line services are available for accessing the large amounts of EUVE data that have been released publicly in the past year; additional services provide access to EUVE -related software and information. ... One such innovative idea is the use of the World Wide Web (WWW). ...
XMM-Newton CCF Release Note XMM-CCF-REL-328 Up date of the RGS to EPIC-pn Rectification Factors R. Gonzґlez-Riestra a July 22, 2015 1 CCF comp onents Name of CCF RGS1 EFFAREACORR 0010. CCF RGS2 EFFAREACORR 0010. CCF VALDATE 2000-01-01T00:00:00 2000-01-01T00:00:00 EVALDATE Blocks changed RECTIFICATION RECTIFICATION XSCS flag NO NO 2 Intro duction The RGS to EPIC-pn rectification ... Figure 1: Comparison of the updated rectification factors with the previous ones. ...
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