... Because of the Earth 's gravity, atmosphere is horizontally stratified (see, e.g., Kelley, 1989). Its structure can be organized by using the neutral gas temperature, as shown in the figure from mid-latitudes (note the logarithmic altitude scale). When going upward from the ground within the lowermost atmospheric region, troposphere, the temperature decreases up to about 10 km altitude (tropopause). ... Here the radiation also ionizes the neutral atmosphere, creating the ionosphere . ... 1989. ...

... Evolution of the magnetic field (solid lines) , temperature (colour) , and velocity (arrows) at four times for case A1 (a), A2 (b), B1 (c), and B2 (d). The characteristic parameters of magnetic field strength and electron number density are given above each case plot. ... Aims We aim at investigating the formation of jet-like features in the lower solar atmosphere, e.g. chromosphere and transition region, as a result of magnetic reconnection. ...

. Previous slide . Next slide . Back to first slide . View graphic version .

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 . ...

Stellarium 0.12.3 . ... Classes . ... FileљStructure . ... Atmosphere Class Reference . ... More... #include < Atmosphere.hpp > . voidљ . computeColor (double JD, Vec3d _sunPos, Vec3d moonPos, float moonPhase, StelCore *core, float eclipseFac, float latitude=45.f, float altitude=200.f, float temperature=15.f, float relativeHumidity=40.f) . ... Get fade in/out duration in seconds. ... getFlagShow () const . ... getFadeIntensity (void) const . ... Definition at line 40 of file Atmosphere.hpp . ...

. WLS information

Hubble Finds Oxygen Atmosphere On Jupiter's Moon Europa . Astronomers using NASA's Hubble Space Telescope (HST) have identified the presence of an extremely tenuous atmosphere of molecular oxygen around Jupiter's second moon, Europa . ... Europa's oxygen atmosphere is so tenuous that its surface pressure is barely one hundred billionth that of the Earth," said Principal Investigator Doyle Hall, of Johns Hopkins. ... The oxygen gas slowly leaks into space and must be replenished continuously. ...

. These two buildings, located on a hill near the 305 m dish, house the Observatory's optical instrumentation. This equipment is used to study the spectra of natural airglow emissions that originate in the upper atmosphere. We also maintain two powerful lidars (or laser radars) that we use to measure the density, temperature, and winds of the atmosphere. The light from the lasers (shown in one photo) can be seen at night up to a few miles from the Observatory.

... Observatory . ... Science . ... Science Users Information > Science Publications > Science Announcements > Astrobiology and Planetary Atmospheres . ... Science Users Information . Observing Facilities . La Silla Paranal Observatory . Paranal Facilities . ... Observing with ESO Telescopes . ... Data Handling and Products . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... ESO Data Access Policy . ... ESO Science Newsletter . ... Published: 29 Jul 2015 . ...

... Bojan Nikolic web pages home . ... I've posted a simple command-line program to compute the dispersive path delay due to the atmosphere using ATM (more precisely my re-packaging AATM). ... I had not appreciated that even at 330GHz, the dispersive wet delay is about 10% of the non-dispersive wet delay. Please enable JavaScript to view the comments powered by Disqus. blog comments powered by Disqus . Copyright 2012, Bojan Nikolic feedback welcome ...

University Satellites and . Space Science Education . ... The project of the scientific - educational small satellite for research of Earth upper atmosphere density . ... At the end of 80th years in Kuybishev aviation institute (nowadays the Samara State Aerospace University) has been developed the project of small spherical satellite " PION ", intended as for a calibration of ground resources of tracing behind space objects, and for refinement of density of upper atmosphere of the Earth. ...

... STScI , and NASA Explanation: The atmosphere of a comet comes and goes . ... Immense but tenuous and fleeting, the inner atmosphere or inner "coma" of comet Hyakutake is seen in this false color picture . Oriented with the sunward direction toward the upper right, the picture is a composite of Hubble Space Telescope images recorded on April 3 and 4, 1996. ... April . ... Publications with keywords: atmosphere - comet Hyakutake . Publications with words: atmosphere - comet Hyakutake . ...

... 2001 November 28 . Extra-Solar Planetary Atmosphere Detected . ... Explanation: By directly detecting the atmosphere of a planet outside our Solar System , humanity has taken another small step toward finding extraterrestrial life . The unexpected detection by David Charbonneau ( Caltech ) and associates came from Hubble Space Telescope observations of Sun -like star HD 209458 . ... About APOD | ...

... Laboratory for atmosphere optics was found in 2000. The main directions of activity of the laboratory . ... The most actual and significant - research of chemical composition of a ground atmospheric slice in conditions of a large industrial center. ... Scientific and industrial optical instrument making. ... Dr. Mikhail G .Sosonkin, senior researcher - head of the laboratory . Yuri S. Ivanov - senior researcher . ... Laboratory for atmosphere optics МАО NANU . ... 380(44)5264539 . ...

. © IRE RAS 1996-200 6

Stationary Shock Waves. ... Influence of Medium Ionization on Shock Wave Propagation. Shock Waves with Decays. ... Results of Classic Theory of Radiation of the Electron Moving in Ion Field. ... Classification and Physical Features of Galaxies. X-Radiation of Coronae of Elliptical Galaxies and Clusters of Galaxies. ... Methods of Obtaining of Information about Physical Conditions and Components of Interstellar Medium. ... Ionization Fronts and Shock Waves in the Interstellar Medium. ...

God Science Forum Message . Forums: . ... God and Science ћ SETI ћ Software ћ UFO ћ XEphem . ... Discussion Forums | God and Science | ... A Question Of Atmosphere On Our Moon!? ... A question of atmosphere on our Moon!? ... Tell me: when a man is born, how is he born? ... 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" . ...

... Iron abundance in the atmospheres of components of the binary system 41 Draconis . ... 5B Iron abundances, FeI and FeII lines equivalent widths, and microturbulence velocities were found for the components of a highly eccentric spectroscopic and interferometric binary system 41 Dra from high resolution spectra obtained close to the periastron. Weighted mean values of iron abundances in the atmospheres are lgN(Fe) = 7.66 ± 0.03 and lgN(Fe) = 7.72 ± 0.03 for the component a and b, correspondingly. ...

... Tonight's Sky . ... The Magazine . News . Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... The Golden Earring, planetary nebula NGC 2867, and barred spiral galaxy NGC 3109 . ... Astronomy for Kids . ... planetary atmospheres . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... WORKSHOP "STELLAR ATMOSPHERES" . THE CHEMICAL AND DYNAMIC EVOLUTION OF STARS AND GALAXIES" . ... Chernomorka , Odessa , Ukraine . ... Modeling and interpretation of the stellar spectra of the usual and peculiar stars. Elemental abundances in the stars of different types and populations of the Galaxy. Chemical evolution of the stars and galaxies. ... Andrievsky S.M. (OAO ONU, Odessa, Ukraine) . ... CHEMICAL and DYNAMIC EVOLUTION STARS and GALAXIES" . ... Odessa mailto:astro@paco.odessa.ua . ...