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. ...

... A total of 462 were detected, about half of these for the first time. ... Ojects not Detected ----------------------------------------- l b BRMS mK Notes ----------------------------------------- 6.490 + 0.084 5.1 W28 SNR 6.648 + 0.084 4.2 W28 SNR 8.989 +35.502 3.5 S33 B 11.531 +36.350 3.1 S36 A 13.456 + 0.156 3.5 SNR 16.732 + 0.079 3.5 SNR 19.961 - 0.175 3.5 SNR 21.347 - 0.628 3.8 Extragalactic 25.253 - 0.150 5.7 Extragalactic 25.520 0.215 5.2 28.600 - 0.126 4.0 SNR+HII+? ...

... Authors: J. B. Kingdon 1 , G. J. Ferland 2 Recent abundance determinations based on recombination lines in several emission-line nebulae yield ionic abundances several times larger than those derived from forbidden lines. ... Our results suggest that although chemical inhomogeneities may produce non-negliglible biases in abundance determinations in a small number of objects, it is highly unlikely that they can resolve the observed discrepancy for most nebulae. ... huizinga@stsci.edu . ...

... 1 Observations Combination of gridded points and long integration Map Type Grid Size Pixel Separation Integration Time Switch Frequency Bandwidth Resolution Pointed 8x8 3 45 s 3.125 MHz 12.5 MHz 0.08 km/s Data Reduction * * * * * * * * * * * * * * * * * * * * · Have on-source and off-source information · Sources of error 2 Data Reduction (1-e-)=(Tm odel -Tsi gnal )/Tsour ce Tspin= Tem/(1-e-) NH=1.823 x 1018 Tspin (v) dv 3 4 Results Opacities - why different? W esterbork GBT 5 ...

... This data file contains two entries: year and departure temperature from the average world wide temperature in 1899. ... Your task is to use the chi-squared method to compare the data against some linear model or a combination of different linear models if you think that is better, E.g. suppose your model is that the average temperature of the earth will rise 0.5 degrees C every hundred years (or 0.05 degrees per decade). ... You can average the data in 10 year intervals if you want. ...

Get thermodynamics values for any combination of temperature, density and hydrogen mass fraction using MHD, OPAL or ISG equations of state. ... 3.0 < lg T < 7.5 . ... Hummer, D.G., Mihalas, D., 1988. Ap.J. 331 , 794-814. Mihalas, D., Dappen W. and Hummer, D.G., 1988. Ap.J., 331 , 815-825. Dappen, W., Mihalas, D., Hummer, D.G. and Mihalas, B.W., 1988. Ap.J., 332 , 261-270. ... Rogers, F.J., 1994. in IAU Colloq. ... Rogers, F.J., Swenson, F.J., Iglesias, C.A., 1996. ...

... We reconsider the problem of the difference between the abundances of carbon and oxygen in galactic planetary nebulae (PN) derived from the intensities of the recombination and collisionally excited lines. ... The intensities of the forbidden [OIII] lines, the CII, CIII and CIV recombination lines and the CIII]$\,\lambda\,$1909 UV intercombination doublet for different values of the mean electron temperature $T_0$ in PNe and the {\em rms} temperature variation $\mbox{\bm $t^2$}$, are calculated. ...

Recombination H110 alpha line in the Orion Nebula . ... Distribution of recombination line H110 alpha emission on a wave length 6.2cm in the Orion Nebula was obtained with the radiotelescope RATAN-600 with the resolution 40" x 6' x 9.7 km/s ( figure 1 ). ... Thin envelope with diameter 0.36 pc and expamding velocitys about +40 and -70 km/sec was also found. The increase of temperature of gas is revealed in this thin layer. ... Profiles of H110 alpha line in a central part of Orion Nebula. ...

... New families of high-temperature composite materials: . refsic, refsicoat and refsicut. ... In Institute of Solid State Physics of Russian Academy of Sciences (ISSP RAS) refsic, refsicoat and refsicut new families of high-temperature composite materials were invented and developed last years. ... Possible applications of refsic , refsicoat and refsicut materials . ... тАв€а orders on R&D oriented on design of new patentable technical products, using refsic , refsicoat and refsicut materials. ...

... Peter B. Mozhaev , Ph.D. Complicated crystal structure and anisotropy of physical properties of the high critical temperature superconductors (HTSC) makes difficult reproducible fabrication of the multilayered epitaxial heterostructures of HTSC with necessary parameters. ... The goal of this project is study of growth and formation of the multilayer epitaxial heterostructures of HTSC of the ReBa 2 Cu 3 O x family (ReBCO, where Re is the rare earth element). ...

Next: Antenna gain considerations and Up: Some theory Previous: Some theory . To provide correct flux density units for the visibilities, , from an interferometer, the measured correlation coefficient at the correlator ( ) needs to be scaled by a system temperature and a telescope sensitivity factor ( ). ... For a zenith opacity , observing at an elevation of , and if the atmosphere is approximated as having a uniform temperature , then the atmospheric contribution to system temperature is . ...

We model the spectral chanages of late oxygen-rich Miras observed in different pulsation phases. From a combination of variable near-IR spectra and UKIRT spectrophotometry of the 9.7 \mu m silicate dust emission feature in different phases we study the influence of the changing atmospherical circumstances on the conditions in the circumstellar dust shell. ... A comparision with the modelling results for another long period Mira U Ori is also provided. ...

. 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

... Gallery . Simulation Images . Simulations of convection in stars . Side-view of the temperatures in a simulationтАж . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: Side-view of the temperatures in a simulation of a white dwarf . ... NOTE: All images are copyright and must not be reproduced or mirrored in any form without written permission. ... Side-view of the temperatures in a simulation of a white dwarf €йRegner Trampedach . ...

... With McMath, Robert R.; Mohler, Orren C. Telluric Bands of CH 4 in the Solar Spectrum. 1949 v.109 p.28 . With Mohler, Orren C.; McMath, Robert R. New Solar Lines in the Spectral Region 1.52-1.75 . ... With Mohler, Orren C.; Pierce, A. Keith; McMath, Robert R. New Solar Lines in the Spectral Region 1.97-2.49 . ... With Mohler, Orren C.; Pierce, A. Keith; McMath, Robert R. Table of Infrared Solar Lines, 1.4-2.5 . ... With McMath, Robert R.; Mohler, Orren C.; Pierce, A. Keith . ...

... 2013 July 31 . 130 Years of Earth Surface Temperatures . Image Credit: GISS , NASA . Explanation: How has the surface temperature of Earth been changing? ... On average, the display demonstrates that the temperature on Earth has increased by nearly one degree Celsius over the past 130 years, and many of the warmest years on record have occurred only recently. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . NASA Web Privacy Policy and Important Notices . ...

... A three-cell test section roughly representative of the primary mirror was provided for this test by the Steward Mirror Lab. ... Additionally, the tests are intended to determine relative airflow vs. pressure drop characteristics for each of the air flow patterns so the results can be evaluated both as a function of flow rate and of pressure drop along the flow path. ... The bottom (top as installed) was cut out so it could close the chamber for heating and be removed for the cooling tests. ...

. XMM-Newton Science Analysis System . odfcheck (odfcheck-0.18.2) [xmmsas_20050815_1803-6.5.0] . Meta Index / Home Page / Description . This checks identifies any EMOS exposures when the instrument temperatue was lower than a user-specified threshold. A warning is generated for each occurrence. XMM-Newton SOC/SSC -- 2005-08-16