... 2004 December 8 . In the Center of the Heart Nebula . ... The red glow and the larger shape are all created by a small group of stars near the nebula's center. A close up spanning about 30 light years contains many of these stars is shown above in a recent image taken by the Canada France Hawaii Telescope . ... The Heart Nebula is located about 7,500 light years away toward the constellation of Cassiopeia . News: The answer to Lewin's Challenge APOD can be found here . ... About APOD | ...

Pulkovo Photographic Plate Database . To find a certain plate, type its number, choose instrument and click button FIND Instrument: Normal Astrograph 26-inch refractor Plate number: . To find plates with a certain sky area: choose instrument, type coordinates (R.A. and Dec.) of the center of this area, type radius of this area, type (optionally) names of required objects, and click button FIND . ...

EPIC ESAC Correct treatment of fast mode ARFs Marcus G. F. Kirsch , G. Schoenherr, E. Kendziorra, M.J. Freyberg Marcus Kirsch , XMM-Newton European Space Astronomy Center Page 1 menu EPIC ESAC · recap fast mode operations · Extraction region normalization treatment in fast modes · arf generation window versus fast modes Marcus Kirsch , XMM-Newton European Space Astronomy ...

... Space flight . Crew training . ... Order . Space camp . Space Hotel . ... Extra-Vehicular Activity(Hydro-Space) . ... Specify here, if you wish to get a certificate - PADI specialization on Space Suit Diver program. ... Space Vehicle Injection into the Near-Earth Orbit . ... Space Vehicle Descent . ... Services / Order: Order . ...

function fringevissq,c,k,n,normal=normal . ... Zero if no counts. The first index in the frames must correspond to the phase bins. Use k to select a baseline, if multiple baseline are present. ; . ... if n_elements(k) eq 0 then k=1 . ... nominator=add(abs(fringevis(c-avg(c),k))^2-s,n,r(0)-2)/n . denominator=(add(s,n,r(0)-2)/n)^2 . index=where(denominator eq 0,count) . if count gt 0 then denominator(index)=1 . ... if normal then norm_factor=4.0/sinc(float(k)/n0)^2 $ . ...

... They were determined as a result of orbit improving on the base of all kinds of optical observations available in the catalog of observations of the Minor Planet Center on March 16, 2014 (radar observations have not been used at this stage). ... As the MPC orbits do not all were improved simultaneously with EMP orbits, only 383866 sets of elements were used for data comparison (for selected sets of elements process of improvement had started with the use of the same observations). ...

At 08:32, Moscow Time, Soyuz TMA-14 descent vehicle returned to Earth. ... Russian cosmonaut G. Padalka (commander of ISS-19/20, commander of Soyuz TMA-14) and NASA astronaut M.Barratt (flight engineer of ISS-19/20 and of Soyuz TMA-14) completed their mission to the International Space Station (ISS) under the program of Expedition ISS-19/20, and a spaceflight participant, Canadian citizen G. Laliberte has completed his mission under the program of the 17th visiting mission. ...

... SSAU History . SSAU roadmap . ... Engineers of SSAU laboratory of additive technologies started to carry out experiments in the field of 3D-printing of metal parts, components and assemblies. The research of Samara scientists will allow producing highly complex and non-standard elements of spatial forms required for design and creation of advanced aviation and space technology. ... SSAU Laboratory of Additive Technologies is established in 2011. ... e-mail: ssau@ssau.ru . ...

Stellarium 0.12.3 . ... Classes . ... ClassљList . ... Protected Member Functions | ... MpcImportWindow Class Reference . Window for importing orbital elements from the Minor Planet Center. ... voidљ . ... Public Slots inherited from StelDialog . ... Retranslate the content of the dialog. ... Signals inherited from StelDialog . ... Protected Attributes inherited from StelDialog . ... Public Member Functions inherited from StelDialog . ... virtual void MpcImportWindow::createDialogContent . ...

... It is found that the metallisity distribution of disk stars has a gap which subdivide the disk population into two groups. The distribution may be described by the sum of two normal curves which are centered at [Fe/H]=-0.22 and +0.08. The curves can be interpreted as distributions of random errors in metallisity of sample stars. This leads to the conclusion that all stars in each group have actually the same value of [Fe/H]. ... Рассмотрен вопрос о происхождении подсистем Галактики. ...

... Development of Ideas of Structure and Evolution of Stars. Integral Features of Stars, Which Determine Their Structure, Direction and Rate of Evolutuion. ... Connection between Potential and Thermal Energy of Star. ... Structure of a Main Sequence Star. Features of Massive Stars Evolution on the Main Sequence. Internal Structure of the Sun. ... White Dwarfs, Their Features. ... Evolution from the Main Sequence of Massive Stars. ... Evolution of Small Mass Stars till White Dwarfs Sequence. ...

. An artist s impression of ULAS J222711-004547. This newly discovered brown dwarf is characterized by an unusually thick layer of clouds, made of mineral dust. These thick clouds give ULAS J222711-004547 its extremely red color, distinguishing it from normal brown dwarfs. Neil J Cook, Center for Astrophysics Research, University of Hertfordshire

... Мировой Центр Данных . ... Мировая система данных МЦД в России и Украине English . ... Данные . ... в Мировой Центр Данных по солнечно-земной физике в Москве ! МЦД по СЗФ является регулярным членом Мировой системы данных Международного совета по науке. ... Наш сайт содержит информацию о МЦД по СЗФ в Москве, его архивах и базах данных, о данных в прямом доступе и о возможности поиска данных, об участии центра в научных проектах и программах, а также ссылки на другие сайты с геофизическими данными. ...

... MIPT Solid State Physics Department . ... Interacting Electrons in Normal Metals . ... The course is an introduction to interacting Fermi-particle physics and intended for future experimentalists. ... Hartree-Fock approximation. ... Linear reaction function. Calculation of density-density reaction function. Relation of density-density reaction function to compressibility of Fermi liquid and thermodynamic state density. ... Density-density reaction function of free Fermi gas in long-wave limit. ...

DIGITAL WDC EXCHANGE FORMAT . FOR OBSERVATORY 1.0 MINUTE VALUES 1. ... DATA-1 .. DATA-60 are 1-minute values of the given element for that hour. ... Typically, digital 1-minute values received by WDCs from organizations operating automatic magnetic observatory instruments are averages of more frequendy sampled values, e.g. 10-second point samples. ... If the method used to obtain 1-minute average values is important to a user, the WDC will assist in determining the exact procedure applied. ...

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PRO lightcurve, w, t, f, lc, dm ;; extract lightcurve from 2d spectra ;; Input ; ; w wavelength array ; t timing array ; f 2d spectra f(w,t) ; ;; Output ; lc light curve F(t), where F = Int[ f(w)dw ] ; dm light curve in differential magnitudes ; ;; nw = n_elements(w) nt = n_elements(t) ;; trapezoidal integration lc = fltarr(nt) lc = 0. ...

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Japanese Probe to Halley's Comet . Courtesy of NASA's National Space Science Data Center . Sakigake is a test spacecraft similar to Suisei (Planet-A). It flew by comet P/Halley on its sunward side at a distance of about 7 million kilometers (4.4 million miles) on March 11, 1986. ... Sakigake made an Earth swingby on January 8, 1992. The closest approach was at 23 hours, 8 minutes, 47 seconds Japan Standard Time with a geocentric distance of 88,997 kilometers (55,303 miles). ...

... astro-ph . ... Statistical Characterization of the Chandra Source Catalog . ... The first release of the Chandra Source Catalog (CSC) contains ~95,000 X-ray sources in a total area of ~0.75% of the entire sky, using data from ~3,900 separate ACIS observations of a multitude of different types of X-ray sources. ... In addition to these traditional catalog elements, for each X-ray source the CSC includes an extensive set of file-based data products that can be manipulated interactively. ...