... The effect is strongest in the most evolved, high-latitude supergiant V5112 Sgr=IRAS19500-1709, which has an extended structured envelope (Figs.1 and 2). In the optical spectrum of this object, the BaII ion lines are split into three components (Figs.3 and 4). ... Thus, we discovered for the first time the enrichment of the stellar envelope with heavy metals produced at the AGB stage. ... Detection of heavy-metal lines in the spectrum of the circumstellar envelope of a post-AGB star. ...

. Название . Directory Name . Описание . Description . конверты . envelopes . конверты . envelopes .

HI envelopes around HII regions . ... We have investigated 32 HII regions and around 17 of them we have found the clumped HI envelopes with radial motions. The example of the envelope around HII regions M16 is shown on figure 1. ... The thickness of envelopes is rather great - 0.44 radius, mass are about 6E+4 mass of the Sun, kinetic energies - 10E+50 ergs. ... The model of formation of HI envelope was advanced as outcome of an operation of a summarized stellar wind of stars, exciting HII region. ...

Irregular structure of the envelope around the carbon-rich star TX Psc A. Heske, P. te Lintel Hekkert and P.R. Maloney Circumstellar envelopes of seven oxygen and carbon rich late-type stars were resolved by mapping with the 30m IRAM telescope in the (2-1) and (1-0) transitions of carbon monoxide. Six of them were found to be extended of about 40''. ...

. To the IUM main page . We will discuss the question of approximation of the Wiener loop of linear size L by its convex envelope. It turns out that the degree of such approximation is L^(1/3), and not the "usual" L^(1/2).

... 1) The MS lower envelopes for groups of stars with different metallicities turn out to be coincident. ... 4) The conformation of the kinematics of stars within narrow ranges ob b-y with the ages derived from isohrones reveals that, at Z < Z , the isohrone ages seem to be increasingly overestimated with growing b-y . ... At a given metallicity, they have a much narrower MS and the locus of their MS lower envelope seems to be brighter for the metal-rich group of stars. ...

NGC 3918 is in the constellation Centaurus and is about 3,000 light-years from us. Its diameter is about 0.3 light-year. It shows a roughly spherical outer envelope but an elongated inner balloon inflated by a fast wind from the hot central star, which is starting to break out of the spherical envelope at the top and bottom of the image. Credits: Howard Bond (Space Telescope Science Institute), Robin Ciardullo (Pennsylvania State University) and NASA

... Астронет | ... Переменные Звезды | ... планета Астронет | ... Словарь | ... О словаре . ... Термин "envelope" . envelope : . оболочка (напр. звезды) . band envelope : . форма полосы (молекулярнoго спектра) . ... контур полосы (молекулярнoго спектра) . circumstellar envelope : . околозвездная оболочка . electron envelope : . электронная оболочка (атома) . expanding envelope : . расширяющаяся оболочка . extended envelope : . протяженная оболочка . ...

An artist's conception showing a blue straggler being created by mass transfer in a binary star system. The giant star, seen in the upper left of the illustration, has lost hold of its outer envelope. ... Soon the giant star will donate the remainder of its envelope, leaving only the half-solar-mass white dwarf core (shown peaking through the giant's tenuous envelope) as the companion to the blue straggler. Credit: Aaron M. Geller ...

... L.V.Zotov , C. M. Bizouard Envelope calculation () () () E() L.V.Zotov , C. M. Bizouard Envelope calculation () () () E() L.V.Zotov , C. M. Bizouard Amplitude model and forecast 3-layer Neural Network with (7, 7, 1) neurons L.V.Zotov , C. M. Bizouard Phase model and forecast 3-layer Neural Network with (7, 7, 1) neurons L.V.Zotov , C. M. Bizouard Phase and amplitude models ~ Chandler ...

... Figure 5: The location of CPDтИТ20 1123 on the log g T eff diagram, compared with normal sdB stars (Edelmann et al. 2003), helium-rich sdB stars (Ahmad Jeffery 2003; Naslim et al. 2010), helium-rich sdO stars (Stroeer et al. ... We present a fine analysis of the bright intermediate helium sdB star CPDтИТ20 1123 (Albus 1) which shows it to be cool, for a hot subdwarf, with T eff 23 000 K and with a surface helium abundance 17 per cent by number. ...

Electrolysis of Ices as a Key to Understanding of the Minor Bodies' Nature . ... The electrolysis of dirty ices constituting massive envelopes of Ganymede-like bodies is shown to be crucial for understanding of (explosive) origin and manifestations of different types of minor bodies and related objects in the inner Solar System. ...

... In this poster we propose a hypothesis that within fixed assumptions about internal physics (opacity, thermodynamics, nuclear reactions) a strict relation between the surface helium abundance and the entropy of the adiabatic part of the convective zone exists for all solar models. This hypothesis is verified with models under simplified physics (Christensen­Dalsgaard 1988) and with six evolutionary models computed by Christensen­Dalsgaard (1992). ... 1990, Christensen­Dalsgaard 1991). ...

... An international team of astronomers has discovered a new magnificent example of a planetary nebula showing fast moving jets. ... Finally, the envelope is ejected as a planetary nebula and the two stars are now orbiting around each other in a frenetic cosmic waltz. ... The paper, just accepted by Monthly Notices of the Royal Astronomical Society, is available on astro-ph (ETHOS 1: A high latitude planetary nebula with jets forged by a post common envelope binary central star, by B. Miszalski et al.)...

... Posts tagged ?DEM? ... Posted by vlk . 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. ... Very few algorithms even bother to calculate error envelopes on them. ... 2 Comments . ... One such case is that of Differential Emission Measures (DEM), where the ?quantity of emission? from a plasma (loosely, how much stuff there is available to emit ? ...

Next: Magnesium-aluminium oxide (spinel) Up: Examples of data contained Previous: Silicate minerals . About 85-90 % of the dust condensing in the envelopes of oxygen-rich evolved stars consist of amorphous magnesium or magnesium-iron silicates [ 6 ]. ... The calculated absorption coefficients show that MgO influences the position of the 10 and 20 m band. ... Next: Magnesium-aluminium oxide (spinel) Up: Examples of data contained Previous: Silicate minerals root 2003-03-06 ...

... Venus" in Astronomy , Sep. 1982, p. 6. ... The Solar System Close-Up (130 of the best spacecraft views of the planets and satellites. with detailed nontechnical captions) ? ... Activity Corner: "Scaling Down The Solar System" . ... On this scale, the Earth would be represented by a pea, and the Moon by a grain of sand 13 cm. away. ... You could make the scale ten times smaller, so that the solar system would fit within the school yard, but then the Earth would shrink to the size of a grain of sand. ...

... We have used a coupled dynamical and chemical model to examine the chemical changes caused by the passage of a density wave propagating into the protostellar cloud. ... The chemical coupling between gas and dust causes locally increased number densities of active ra dicals, such as C, N, O, NH, and OH, and hydrogen saturated molecules CH 4 , NH 3 and H 2 O. We show that chemical evolution in the post-wave gas can account for the observed abundance of water and NH 3 observed in interstellar clouds. ...

... Adress: Sternberg Astronomical Institute, Moscow State University, Universitetskii prospect 13, RU-119899 Moscow. ... e-mail: pasynok@sai.msu.ru . ... From April 1996 to April 1999 I was a postgraduate student physical faculty of the Moscow State University (MSU). ... From September 1991 to January 1996 I was a student physical faculty of the Moscow State University (MSU). ... From 1 August 1999 I working as a science researcher of the gravymetry laboratory Steinberg State Institute MSU. ...

. Determination of Physical Characteristics of Cygnus Nova 1977 Envelope with Spectrograms. Red Shift in Galaxy Spectrum. Globules. Tidal Radius. Demensions. © ASTDEPT, 2003, Webmaster . Designer