Difference in chemical composition between the stars 16 Cyg A and 16 Cyg B, versus the condensation temperature of the elements in the proto-planetary nebula. If the stars had identical chemical compositions then the difference (A-B) would be zero. ...

... Satellite data ] . SMIS ] . The program is designed to process the specific AVHRR instrument data for calculation and analysis of temperature fields on the sea surface and upper level of clouds. It performs brightness correction for visible channels with regards to clouds altitude. ... The program features a wide variety of classification algorithms (including two-dimensional histogram analysis) and enables to construct personal procedures for classification. ... Back to SMIS Home Page . ...

... This example explores the evolution of the sun. ... Given that the mass of proton is 1.00870 atomic mass units and the mass of a helium nucleus is 4.0026 atomic mass units, estimate the sun's average rate of energy production by nuclear reactions (in solar luminosities) over its lifetime. Take the age of the sun as 4.5 в 109 yr. Does nuclear energy production seem to successfully account for the energy output of the sun? (b) Comment on the changes in the abundance profiles as the sun ages. ...

... 2011 February 11 . Star Colors in Orion . ... Explanation: What determines a star's color ? ... Red stars are cool, with surface temperatures of around 3,000 kelvins (K) , while blue stars are hotter and can have temperatures over 30,000 K. Our own lovely "yellow" Sun's temperature is a comforting 6,000 K. Differences in star colors are particularly easy to see in this intriguing composite view of the constellation Orion, made while experimenting with a star trail step-focus technique . ...

... Sea Surface Temperature, restored from NOAA satellite data . You may use Java applet to view temperature maps in more detail. Using the applet, you can build "accumulated" temperature maps from selected data, get temperature values in any point and save the resulting image to your local disk. Date and time of the data . ... 6:01 (GMT) . ... 3.04.2016 . ... For information mail to: info@sputnik.infospace.ru . ...

... St Petersburg 23, September 2014 1 Motivation · Origin of Martian moons? ... Considered error sources: ­ Phobos a priori ephemerides; ­ Phobos a priori GM value; ­ measurements noise; ­ different strategies; · Methods: ­ real data analysis; ­ simulations. ... St Petersburg 23, September 2014 8 Simulations: sensitivity of the measurements to the a priori GM value Simulations: zero noise+ IMCCE a priori ephemerides +GMPH = 7.16 * 105 m3/sec2. ... St Petersburg 23, September 2014 14 Thank you! ...

... For the experimental investigation IRE has installed several radiometers in Oberpfaffenhofen, Germany, having the same frequencies as the Priroda- IKAR radiometers (13, 22.2, 37 and 90 GHz), close to a 19 GHz dual polarisation radiometer and meteorological equipment of DLR (2 raingauges, a distrometer for measurements of the size of rain drops, and sensors for humidity, temperature and pressure). ... N, 17 deg. ... 1000 . ... Table 1: Specifications of ground based radiometers in Oberpfaffenhofen. ...

... The object is remarkable because of its low estimated mass and age and because it is associated with a mid-infrared source, an indication of a surrounding dusty disk. Based on the comparison of our spectrum with similar spectra of field M-dwarfs and atmospheric models, we obtain revised estimates of the spectral type, effective temperature and luminosity of the central object. ...

Cost Estimating Web Site . ... 2005 NASA Cost Analysis Symposium Databases . ... World , European Communities , Other European Countries , Americas , Asia , Africa , General US , US Federal Government , US Department of Defense , Aerospace Industry , NASA , Science & Engineering Handbooks . NASA Cost Estimating Handbook 2004 , Parametric Estimating Handbook .. ... Consumer Price Index , Employment Cost Index , GDP Deflator , Import Price Index , NASA New Start Index , Producer Price Index . ...

... Moscow S. V. Ajukov THE SOLAR ENVELOPE PARAMETERS AND RADIATIVE OPACITIES IN THE MODELS OF THE PRESENT SUN Comparison of the different opacity tables at the solar core conditions. ... The convection zone depth versus the envelope entropy for the three opacity tables. ... The influence of opacity on the standard solar model parameters Increasing opacities from CS70 up to LAOL (WKM) (both in the core and the radiative zone) raises helium content by 4--5%. ... Solar models with modified opacities . ...

... Abubekerov M.K., Lipunov V.M. "The Lower Temperature Limits Of Accretors" Astronomy Reports, 2003, Vol. 47, Issue 8, pp.679-684. ... Abubekerov M.K., Antokhina E.A., Cherepashchuk A.M. "The Masses of X-ray Pulsars in Binary systems with OB Supergiants" Astronomy Reports, 2004, Vol. ... Abubekerov M.K., Antokhina E.A., Cherepashchuk A.M., Shimanskii V.V. "The Mass of the Compact Object in the Low-Mass X-ray Binary 2S 0921-630" Astronomy Reports Astronomy Reports, 2006, Vol.50, Issue 7, pp.544-552. ...

. Next: Diameters Up: Stellar parameters from calibrations Previous: Gravities Contents . Temperatures of stars are derived from their spectral type and luminosity class. Calibrations are stored in files spec_par.V, spec_par.IV, spec_par.III, spec_par.II, spec_par.I in oyster/starbase . teff_stars Compute effective temperature for all stars in startable. teff_star ( spectrum _char ) Function. Return effective temperature for star with specified spectrum. Christian Hummel 2015-04-28

XMM­Newton CCF Release Note XMM­CCF­REL­324 EPIC MOS HK GTI Selection M.J.S. Smith February 2, 2015 1 CCF Components Name of CCF VALDATE EVALDATE Blocks XSCS Changed Flag EMOS1 HKPARMINT 0011.CCF 2014­11­06T15:15:00 2014­12­23T20:55:00 HKPARMINT NO EMOS2 HKPARMINT 0010.CCF 2014­11­06T15:15:00 2014­12­23T20:55:00 HKPARMINT NO 2 Changes During the 2014 winter eclipse season, gaps in ground station coverage around perigee resulted in delays in stabilising to the nominal MOS focal plane (FP) temperature. ...

... The temperatures of the air and the telescope truss are shown as a function of time in this figure. ... The air temperature was also decreasing at the time of these measurements which makes the estimate of the time constant for truss cooling given above an upper limit. However, unlike the estimate of the rod cooling time shown in Figure 8, the longer time constant of the truss and the smaller concurrent changes in the air temperature make this a better estimate of the truss cooling time constant. ...

The stars. The Stars - are the shining (plasma) spheres like the Sun. ... The star’s masses M are from 0,04 to 60 л ¤ , luminary (L) from 0,5 to hundreds thousand L ¤ (see later). ... On the definite step of the stars evolution the stars come through the period of nonstationarity (see "nonstationary stars" ). Depending on mass the stars become at the end of evolution the white dwarfs or the neutron stars or the black holes . ... The supernew stars. ... The nebula Loop of the Swan . ...

Dimmings or transient coronal holes (i.e. regions of decreased intensity of soft X-ray and EUV emission), which are observed on the solar disk after halo coronal mass ejections (CMEs), are analyzed using SOHO/EIT data simultaneously in three coronal lines Fe IX/X (171 A), Fe XII (195 A) and Fe IX (284 A) sensitive to temperatures Te~1.2, 1.5 and 2.0 MK, respectively, as well as in the transition region line He II (304 A; Te~(0.02-0.08) MK). ...

... History of the SAO RAS (in Russian) . ... The Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS) was founded in 1966. ... The main instruments of the Observatory are the Big Telescope Alt-azimuthal (BTA) , an optical reflector with the primary mirror 6 metres in diameter and the radio telescope RATAN-600 (abbreviated from the RAdio Telescope of the Academy of Sciences) with a 600 metre multielement ring antenna. ... The Astrophysical Bulletin journal in Russian and...