... Registration form . ... Institute of Applied Astronomy of the Russian Academy of Sciences invites you to participate in the all-Russian scientific conference "Asteroid-Comet Hazard-2005" which will be held 3-7 October 2005 in St. Petersburg. ... Batrakov Yu.V. Institute of Applied Astronomy of RAS, St.Petersburg . ... Institute of Applied Astronomy of RAS . ... Finkelstein A.M. Institute of Applied Astronomy of RAS, St.Petersburg . ... Institute of Applied Astronomy of RAS, St.Petersburg . ...

Calculation of Atmospheric Emission Measured by Gregorian Feed Horns Paul F. Goldsmith September 16, 2001 As we use higher frequencies, emission from the Earth's atmosphere becomes more sig- ni cant. ... To use this program, you input the altitude, temperature, and precipitable water vapor (pwv) in mm. ... I have run the ATM code for several values of pwv with plausible temperature, and generated the zenith sky temperature as a function of frequency between 1 and 15 GHz. ...

... We want to know time-scales, and sequences of events, and the ages of stars. ... We would, ideally, like to create a solar comparison sample by finding stars of essentially the same mass, composition, and age and then observing the range of behavior they exhibit. ... At best we can estimate a star 's age. ... Having to construct models that work consistently across a broad range of masses constrains the problem, and yet even for the nearest open clusters we do not know the age to even 10%. ...

... Program,Proceedings . ... Abstracts . ... The main purpose of the Workshop is to provide a forum for presenting and discussing the results of recent low temperature investigations in the microgravity environment, as well as future related studies in fundamental physics that can be carried out on ground and onboard the International Space Station, taking into account the advantage of long-duration experimentation in reduced gravity. ... Manuscript Submission - on attendance the Workshop . ...

A workshop to discuss the detailed science, technical design, performance and implementation plan for aperture arrays in Phase 1 and Phase 2 of the SKA. In particular we will emphasise the achievable requirements for the low frequency aperture array for SKA 1 and discuss the evolution to AA-mid in SKA 2 . ... SKA 1 : SKA phase 1, construction 2016 - 2019, science operation 2020 . SKA 2 : SKA phase 2, construction 2018 - 2023, science operation 2024 . ... Workshop dates . 8-10 December . ...

Communications For Your Astronomy Event . Articles | ... John Huggins, December 19, 2005 . ... Citizens Band Radio - The original . Multi-Use Radio Service . Family Radio Service (FRS) . General Mobile Radio Service . Hybrid Radios . Amateur Radio Service . ... Does your event need communications? ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

... We cannot use for this purpose equivalent widths and profiles of HI lines (well known criteria of atmospheric conditions for normal supergiants), since these lines are strongly distorted in the spectrum of IRAS04296 as seen in Fig. ... Figure: Upper: iron abundance FeI (circles) and FeII (crosses) calculated for IRAS04296+3429 with model parameters , and using lines with different excitation potentials EP of a low level; bottom: the same as a function of the equivalent width W . ...

In this new series we present observations and modelling of spectral lines formed in main sequence star chromospheres (from G0 to M8). in this paper, we discuss the Hydrogen line formations in very active dMe stellar chromospheres. ... Our final model atmosphere is described in the next paper in this series. ... We found that observations are best reproduced by a chromospheric structure including a constant temperature gradient (in a log(M) scale) in the chromosphere and transition region. ...

This astrostatistics session will honor the memory of Alanna Connors. Alanna was a pioneer in the investigation and development of statistical methods required for the analysis of high energy data. The session will provide a historical perspective on Bayesian methods, highlight the topics where the contribution made by Alanna were particularly important, summarize current analysis challenges and discuss future perspectives. ... 131.02 Promoting widespread use of Bayesian analysis . ...

The seminar is supported by the grant of Federal Programm "Integration" . ... Panov Igor Vital'evich (ITEP) "R-process nucleosynthesis of heavy elements" . The present status of r-process theory is discussed: achgievements in kinetic consideration of the process and difficulties in understanding of r-process site. ... The original model, where r-process goes on driving by neutrino pulse from collapsing supernova with mass equal to 10-15 solar masses, is discussed. ...

... The air just sit there and doesn't get stirred. ... Normally, the air is hottest near the ground and gets cooler as you go up. ... If it weren't for the temperature profile, convection wouldn't occur: Because the temperature decreases with altitude, cold air sits on top of hot air, allowing convection. ... The air above the ground is hot, the air above the water is cold. ... The land cools down faster than the sea, so the air above the ground is colder than the air above the water. ...

spaceweb@oulu.fi - last update: 14 January 1999, 0950 UT (RR) . Term 'global change' is used to describe the changes of the large scale weather systems on Earth , and especially the surface temperature increase, by man-made increase of atmospheric CO 2 . ... It is the last point that is of importance for space physics, since it is possible that also the changes in Sun 's activity could be causing some changes in terrestrial climate. ... Space Physics Text Book of Oulu ...

Discover the cosmos! ... 2009 January 19 . Methane Discovered in the Atmosphere of Mars . Credit: NASA . ... The confirmation was made spectroscopically using large ground - based telescopes by finding precise colors absorbed on Mars that match those absorbed by methane on Earth. Given that methane is destroyed in the open martian air in a matter of years, the present existence of the fragile gas indicates that it is currently being released, somehow, from the surface of Mars. ...

Next: Image sampling Up: Computational Methods Previous: Computational Methods . It is important to understand the basic properties of the data which are being reduced since most computational techniques make implicit assumptions. The result of an algorithm may depend on things such as sampling and noise characteristics of the data set. Furthermore, the most common methods for estimation of parameters are discussed in this section. Image sampling . ... Tue Mar 28 16:52:29 MET DST 1995 ...

... I would several points which we faced during our everysolved for better quality of individual ACs' and EOP products · There are two main EOP products provided by two IERS Product Centers on Earth Orientation (Earth Orientation Center (EOC) and Rapid Service/ Prediction Center (RSPC)). ... However, the latter is not provided by the IERS. ... ITRF · Using ITRF in computation of EOP series produced by various ACs seems to be a necessary condition to provide the consistency between the IERS products. ...

ON THE ENERGY DISSIPATION RELEASE IN THE BY MAGNETIC FIELD SOLAR ATMOSPHERE M. KOPECKY and V. OBRIDKO* Astronomical Institute of the Czechoslovak Academy of Sciences, Ond(ejov (Received 18 April, 1968) Abstract. ... 1) The calculations of the conductivity for the case of fully ionized gas gave very great values for all layers in the solar atmosphere. ... 2) What is the value of the energy released by magnetic-field dissipation, and how large is the heating of atmospheric layers by this process? ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Facilities . ATNF facilities . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

TALKS ST EL L E Raffaele Gratton INAF - Osservatorio Astronomico di Padova Stellar abundances and the chemical evolution of stellar systems: the Italian contribution The chemical composition of stellar syst the last few years, exciting results have and efficient spectrographs. ... Once the observations of all clusters will be completed for at least one season, we plan to better describe and model the evolution of the stellar angular momentum from the PMS to the TAMS. ...

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