... Galaxies 99 Cosmic background with model of cloudy interstellar medium Yu. ... Figure 1: Averaged spectrum of the cosmic background I f in frequency range 0.25 200 MHz for the Galactic poles. ... First interpretation of the cosmic noise background spectrum at broad band frequency range 0.25 200 MHz with a model of the cloudy interstellar medium ISM is presented here. ... Synthesized background spectra I f for regions of the Galactic poles at the frequency range 0.25 200 MHz is presented in Fig. ...

... ARC 3.5m | Weather Closure Conditions . The enclosure will be closed by the Observing Specialist under the following conditions. ... This policy will be consulted whenever there are questions or disagreements concerning closure of the APO 3.5-meter telescope due to hazardous conditions or situations, at times when telescope operations are being overseen by an APO Observing Specialist. ... the on-duty Observing Specialist has full responsibility, and sole authority, to make this decision. ...

... Berezhnoy A.A., Kozlova E.A., Shevchenko V.V. Sternberg State Astronomical Institute, Moscow University, Russia, Moscow, Universitetski pr., 13, 199992. katk@sai.msu.ru According to the data from "Lunar Prospector" [1] the areas of high hydrogen content in the lunar south pole region coincide with the areas of such craters as Faustini (87.2є S, 75.8є E), Cabeus (85.2є S, 323є E) and other crates. ... We estimate the total permanently shadowed area in the lunar northern polar region at 28 260,2 km2. ...

Cold-Electron Bolometer Arrays for THz Detection Leonid S. Kuzmin b , Mikhail A. Tarasovc,d, , Sumedh H. Mahashabdea, and Valerian S.Edelmane, Chalmers University of Technology ... Electronics, Moscow, Russia c P.Kapitza Institute for Physical Problems, Moscow, Russia a a,b,c Abstract-- Various concepts of Cold-Electron Bolometer (CEB) Arrays are considered for THz detection from 300 GHz to 7 THz ... Optical response to THz radiation is 300 µV for 2.7/0.3 K temperature difference. ...

Continuum emission from H I I regions and dusty molecular clouds Riccardo Cesaroni INAF­Osservatorio Astrofisico di Arcetri, Firenze, Italy E-mail: cesa@arcetri.astro.it The classical description of the formation and evolution of ionized (HI I) regions associated with early-type stars is reviewed, with illustrative examples taking into account constant and power-law density profiles. ... If the star lies inside a homogeneous molecular cloud with H2 volume density nH2 , one has also ne =constant. ...

... 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. ...

... Several CCD suppliers specify their devices without taking into account the effects of dark current and temperature. ... The influence of dark current is becoming more important, especially with larger integration or storage times at elevated temperatures. ... The temperature will influence the dynamic range through dark current, shot noise on the dark current and temporal noise of the output amplifier. ... Increasing the integration time automatically increases the dark current. ...

... Low-latitude aurorae are a storm time phenomena, in which particles originating from the ring current (and/or which are energized by the ring current) enter the lower thermosphere causing optical emission. It has been suggested (Rassoul et al., 1993) that four "pure" types of such auroras exist, as shown in table below, where LEE = low energy electron aurora, and HP = heavy particle aurora. ... low-latitude . ... One should thus not confuse them with other red emissions from much lower altitudes. ...

... In 1930, Trumpler noticed that linear diameters (LD) of open clusters increase with distance (D) from the Sun. ... Since that time, the interstellar absorption has become one of the best studied factor in astrophysics, and we may hope that current OCL distance scales are free from this LD-D correlation. To verify if this is the case we have chosen several modern OCL distance scales and test them with the same clusters and the same angular diameters that Trumpler had used back in 1930. ...

WPLTN Technical Workshop . ... WPLTN-2012) . ... of the International Scientific Technical Conference WPLTN-2012 . ... Having an opinion that the collocation of various space geodesy measurement technologies has a fundamental role in increasing the accuracy of fundamental and applied positioning, navigation and timing provision, the International Scientific Technical Conference WPLTN-2012 has come to the following conclusions: 2.1. ... Web-page . ... Resolution of the conference WPLTN-2012 . ...

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... Depending on the size of the original lump of gas and dust, the process of stellar birth can give rise to different sorts of stars. ... A lump in the middle, not too small and not too large, becomes a middling star such as the Sun. ... For an idea of the Sun's life expectancy, astronomers look to clusters of stars, such as one named Messier 67, which is about the same age as our Sun. ... The Sun's outer layers, freed from the gravitational clutches of the core, will waft away. ...

... A rough estimation is that in the United States there is one planetarium per 100,000 population, ranging in size from the Hayden Planetarium's 20-meter dome seating 430 people, to three-meter inflatable portable domes where children sit on the floor. ... Together dblo associates make a huge impact in the architecture, interior design and development arena in London. ... With the holidays around the corner what better way to spoil your family than with your very own private home cinema. ...

THE SPREADING LAYER OF GX 9+9 Osmi Vilhu(1), Ada Paizis(2), Diana Hannikainen(1) , Juho Schultz(1) , Volker Beckmann(3), (1) (2) (3 Observatory Box 14,FIN-00014 University of Helsinki,Finland, E-mail:osmi.vilhu@helsinki.fi INAF-IASF,Milano, Italy, E-mail:ada@iasf-milano.inaf.it ) NASA/GSFC,Greenbelt,USA E-mail:beckmann@milkyway.gsfc.nasa.gov ABSTRACT The spreading layer (SL) of GX 9+9 during the upper banana state was studied using INTEGRAL and RXTE observations. ... MODELING OF THE SL-SPECTRUM 2. ...

Bigbang Forum Message . Forums: . ... Discussion Forums | ... All True IF Speed Of Light Is Constant (I Can Question That.. Forum List | ... Post Message | ... basicaly it says that speed of light is not constant because it depends of the movement of the source. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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Subject, Problems and Objects of Theoretical Astrophysics. ... Stellar Photospheres, Their Features. ... Physics of Continuous Radiation Absorption in Stellar Photospheres. ... Continuous Radiation Absorption in Stellar Photospheres of Various Spectral Classes. Solar Type Photospheres. ... Characterisics of Absorption Lines. ... Interstellar Absorption Lines, Their Features. ... Physical and Dynamic Features of Interstellar Medium, Which Follows from Observations of Interstellar Absorption Lines. ...

Astrophys Space Sci DOI 10.1007/s10509-009-0263-8 ORIGIN AL AR TICLE Smooth models of overshooting at the base of the solar convective zone Vladimir A. Baturin · Irina V. Mironova Received: 14 September 2009 / Accepted: 29 December 2009 © Springer Science+Business Media B.V. 2010 Abstract A set of smoothed temperature gradient profiles around overshooting layers at the solar convective zone bottom is considered. ... Models of CZ overshooting are different mainly in the sign of the convective flux. ...

The hotbed effect (hothouse effect) in the planets atmosphere is the inside atmosphere layers heating (of the Earth, Venus etc.), due to the transparent planet atmosphere for the main part of solar radiation (in optical range). In the atmosphere of the Earth this radiation is absorbed by the molecules of H2O, C02, O3 and others. ... As a result of human activities the CO2 content is increasing (and the other gases, absorbing in infrared range). ...

... Methodology of Time Delay Change Determination for Uneven Data Sets V.L.Oknyanskij Sternberg Astronomical Ins., ... It was found in this way that the radio variations (5 MHz) followed the optical ones, but that the time delay was a linear function of time with the mean value being about 2370 days and with the rate of increase V # 110 days/year. ... Time Delay Change Determination for Uneven Data Sets 491 Figure 2. p(V) is probability to get some value V # # V if the actual V a = 0 days/year. ...