. 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

... Anticipated Radiation Effects . ... Various radiation effects can be anticipated, based on similarities to other CMOS devices. ... Total dose radiation effects in CMOS devices can be divided into two broad classes: charge trapping and interface state generation. ... When interface states are located in a depletion region, they act as sources of dark current. Increased dark current is expected to be the dominant radiation effect in active pixel sensors, leading to increased shot noise. ...

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. ...

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). ...

... The basic principles of incoherent scatter: . ... Because of the electron movement, spectrum of the observed signal is broad and it has shape which depends, e.g., on the temperature. ... ion temperature . ... According to the theory, Ti should be replaced by (2Ti,perp + Ti,par)/3 (Williams and Jain,1986; Glatthor and Hernandez, 1990; Winser et al., 1990). ... Glatthor, N., and R. Hernandez, Temperature anisotropy of drifting ions in the auroral F-region, observed by EISCAT, J. atmos. terr. ...

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. ...

. This Directory contains Model of distribution of density, temperature and effective collision freguency of electrons. Yu.K.Chasovitin. 1998. This Directory contains The program RIM98 for calculating the parameters of the ionosphere to use the "Reference Ionospheric Model-98" (RIM-98).Yu.K.Chasovitin. 1998.

TOWARDS SUPERSENSITIVE BOLOMETERS AND ELECTRON COOLERS BASED ON CARBON NANOTUBES M.TARASOV, J.SVENSSON, S.DITTMER, L.KUZMIN, AND E.CAMPBELL Chalmers University of Technology, GЖteborg SE 41294, Sweden E-mail: Mikhail.tarasov@mc2.chalmers.se Carbon nanotubes (CNT) are being intensively developed for novel electronics. Electron cooling by superconductor-insulator-nanotube (SIN) tunnel junctions could be extremely effective due to the small volume of the CNT. ...

CHANDRA HRMA EFFECTIVE AREA Herman L. Marshall (MIT CXC) CHANDRA HRMA EFFECTIVE AREA Herman L. Marshall (MIT CXC) CHANDRA EFFECTIVE AREA ISSUES HRMA overlayer (with L. David, D. Jerius, etc.) ... 1, 2009 2 HLM-- Chandra Effective Area HRMA AREA MODEL, REVISED Motivation: No overlayer during ground cal (XRCF) Grating XRCF data shows overlayer Cluster kT values disagreed with XMM pn and MOS Pure overlayer models don't fit XRCF data 10 models tried None were perfect Few are very bad One picked: F Apr. ...

... Roland Buser has provided an extensive collection of Kurucz (1979) model atmosphere spectra covering a wide range in metallicity, effective temperature, and gravity. ... The BK atlas is a library of stellar flux spectra calculated by Kurucz and Buser from theoretical model atmospheres. ... For convenient use, the BK atlas flux spectra have been subdivided into separate blocks (or sub-atlases) corresponding to the physical distinctions of their underlying model atmospheres, as described above. ...

... Science . ... Other Science . ... I found that the attractive interaction between holes increases in strength as the system is moved towards the superconducting phase and that the curves of constant energy closely resemble those of a free particle. The results provide convincing evidence that the pairing mechanism results precisely from the hole interaction. Thesis available upon email request. Copyright 2007 Emma Kirby. ... All Photos were taken by Emma Kirby unless otherwise stated. ...

... References: %Observed energy levels ( levels 2,3): Shirai,T., Sugar,J., Musgrove,A., Wiese,W.L., 2000, J.Phys.Chem.Ref.Data, Monograph 8 %Observed energy levels : from the line list of Landi Phillips 2005 , ApJ , in press %observed energy levels (above ionization): Palmeri P., Mendoza C., Kallman T.R., Bautista M.A., 2003, A , 403, 1175 %Theoretical energy levels (below ionization): Landi Gu, 2005 , ... contains the spline fits to the scaled proton collision strengths. ...

Chair of solid state physics . ... Spectroscopy of semiconductors and dielectrics. ... Interband transitions and optical properties of semiconductors. ... Optical properties of metal in a Drude-Lorentz model. Excitons in solids. ... Impurity states in dielectrics and semiconductors. Optical orientation of electron and exciton spins in semiconductors. ... General insight onto interband transitions: electron-radiation interaction, quantum theory of optical transitions in semiconductors. ...

... Key words: stars: magnetic fields ­ stars: chemically p eculiar 1 Intro duction On the basis of all the available published magnetic measurements for Ap stars we have found a few relations describing the frequency of o ccurrence of the sp ecific magnetic field intensity for all typ es of chemical p eculiarities (Bychkov et al. 2003a). ... Magnetization of stars in the `strongly'-magnetic group exceeds that in the `weak'-magnetic group typically by a factor of 5­10, on the average. ...

... The behaviour of the polarization efficiency (see Eq. ( 14 )) for non-absorbing and absorbing spheroids is shown in Fig. 11 for the case when a maximum polarization is expected (PF alignment, ). ... Figure 11: Polarization efficiency against for prolate and oblate spheroids with and , picket fence orientation, . The size/shape effects are illustrated. ... Figure: Polarization efficiency as a function of particle equivolume radius for prolate core-mantle spheroids with and , PF orientation, . ...

Next: *makevig, vigdata* - Apply Up: Calibration Previous: Calibration . Vignetting is a decrease in the effective area of the telescope mirror with increasing off-axis angle. It is due to a combination of a real decrease in the mirror area and a degradation of the mirror reflection efficiency at larger angles of reflection. ... Both the ROSAT and Einstein exposure maps exposure maps are corrected for vignetting. љ . makevig, vigdata* - Apply Vignetting Correction to an image . ...

... Obviously, the size of the cavern is of the order of the Schwartzman radius. ... Thus, consideration of the inverse effect of pulsar radiation on the properties of accreting plasma makes the ejection possible even when the Schwartzman radius is smaller than the capture radius. ... If the cavern radius , the condition at its boundary can be written as . ... Apart from magnetic dipole radiation, the cavern may also contain relativistic particles (which are also reflected from the cavern boundary). ...

Is the ozone layer recovering ? ... Global Regulation Global Regulation · · · · 1985: Vienna Convention 1987: Montreal Protocol Several amendments and adjustments Quantity for (chemical) ozone depletion of ODS: EESC (Equivalent Effective qu ect Stratospheric Chlorine): Weighting over release and ozone depletion of individual ODS EESC for mid-latitudes http//:www.wmo.ch/web/arep/reports/ozone_2002/q&as.pdf, Seite Q.29 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070 2080 2090 2100 3. ...

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 . ...