... 2006: . ... Components of the systems are low mass stars and white dwarfs. For 14 pairs orbit parameters were calculated and masses and luminosities of components were determined for the first time. ... As a result of a multifrequency monitoring of the variability of a micro quasar Cyg X-3 (X-ray binary system which probably consists of a black hole and a high mass Wolf-Rayet star) a high activity period was registered for the first time in the last 4 years. ... Archive . ...

Target Acquisition Reference Information . ... In almost all cases where an onboard acquisition will not work (because the object is in a crowded field, or is variable, or is a moving target), it is sufficient to use an early acquisition to get a WFPC2 or FOC image a few weeks in advance of the GHRS observation. ... Explicit BRIGHT and FAINT limits may be specified if you desire, although there is an increased risk of a failed acquisition unless you are confident of those fluxes. ... MAPs . ...

... In laboratory the design and a manufacturing techniques mirror aspherical optics are developed ("fokon", ellipsoid, aspherical mirror).Such optical elements are made of widespread aluminium alloys on the standard equipment without use diamond turning. ... Using: optical blocks of not image optical devices for transitions, collimation, focus (concentration) radiations in a wide spectral range from UV to IR. Focusing and collimation of light; . ... circle aperture/ring aperture; . ... Back Forward . ...

... Polar Cap Potential . ... The solar wind propagation delay time calculation used here is conceptually similar to the T(IMF) calculation in Kelly, et al. ... The older continuous data are from key parameter data files. ... Note: Very high values of Solar Wind Speed, Solar Wind Pressure, IMF Magnitude and Bz, and Polar Cap Potential are likely indications that WIND has reentered the Earth's magnetosphere; such data is not indicative of solar wind conditions or impending severe geomagnetic disruption. ...

... Minute Values of Geomagnetic Field Components . ... AA 1868 - Present (3 hourly and daily) (monthly) (yearly) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) KP_AP 1932 - Present (3 hourly and daily) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) AE_HV 1957-75, 78-88 (hourly) AE_MIN 1978-881-6;198903;1990-94 (minute) DST 1957 - Present (hourly) PC 1975 - Present (15-minute) AMANAS 1959 - Present (3 hourly and daily) KMKNKS 1983 - Present (3 hourly) . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Measured radial velocities for the primary (full symbols) and secondary (empty symbols), phased with the orbital period of 5.9051102 0.0000023 days. ... HD 98088 is a synchronised, double-lined spectroscopic binary system with a magnetic Ap primary component and an Am secondary component. ... The magnetic field in the primary is predominantly dipolar, with the positive pole oriented approximately towards the secondary. ...

Next: Star Formation Rate and Up: No Title Previous: Calculation of Evolutionary Tracks . To start calculations, we choose the distributions of the initial binary parameters: the mass of the primary ZAMS component, , binary mass ratio, , orbital separation a . ... whereas the mass ratio distribution is not. ... The zero assumption often made is that the mass ratio distribution has a flat shape, that is binaries with a high mass ratio occur as frequently as those with equal masses. ...

. This quantity is the physical maximum velocity rotation corrected for inclination, expressed in km/s. It is deduced from the parameter vmaxg after correcting for inclination using incl . This rotation velocity is calculated from both the 21-cm line widths at different levels and/or the available rotation curves (generally H_alpha rotation curves). The rotation of the stellar component is given in the parameter vmaxs . HyperLeda . Questions: prugniel@obs.univ-lyon1.fr

... Search . ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... ISS Russian Segment . ... Build an operational model of neutron background environment on the station; . ... Correlation data on radiation environment parameters outside the Service Module of the ISS RS obtained through calculation with the results of measurements made by science hardware BTN-M1 and results of other Russian and international experiments; . ... 2015 JSC "S.P. Korolev RSC "Energia" ...

... Experimental base . ... The experimental base of the investigations is the topside sounding data obtained on board of the Intercosmos-19 and Cosmos-1809 satellites. ... It carried on board the following scientific payload: satellite ionospheric station for radio sounding of ionosphere (IS-338) and apparatus for the measurements of low-frequency electromagnetic field (VLF-2ME), electric component of high-frequency field (AHF-2K), electron temperature (KM-3), and spectrometer of photoelectrons (SF3-M)...

Next: CAL_getBoresightMatrix Up: Routines of the Calibration Previous: List of CCF Components Contents . ... The CAL functions CAL_getBadPixelList & CAL_getBadPixelMap use the CAL state variable temperature only to check that the current operating temperature is consistent with the CCF constituent BadPix . ... Used CAL State Variables . List of CCF Components used . ... Next: CAL_getBoresightMatrix Up: Routines of the Calibration Previous: List of CCF Components Contents Michael Smith 2011-09-20 ...

home education > activities . ... Quick math activity that asks students to calculate scale models of a binary star system with a black hole in it. [h] . ... Students use a radiometer and a light bulb with a dimmer switch to make connections between the temperature, color, and radiation output of a star. ... This demonstration, similar to the above, from the Exploratorium Snack-book of science activities, lets students demonstrate how molecules scatter light and change the colors of the beam. [m,h] . ...

... Impact of Covariance Information on the Orientation Parameters Between Radio Source Position Catalogs, IVS 2012 General Meeting Proceedings, p.339­341 http://ivscc.gsfc.nasa.gov/publications/gm2012/sokolova.pdf Impact of Covariance Information on the Orientation Parameters Between Radio Source ... IVS Analysis Centers provide these catalogs in a standard IERS format, where together with radio source positions and other relevant information, RA/DE correlations are reported. ...

Peremennye Zvezdy", . ... Star Name: . GSC 3710-00312, USNO-A2.0 1425-04252279 . ... Variability type: . ... USNO-A2.0 1425-04252279 is located at the distance of 15?.7 from the X-ray source 1RXS J031707.9+572942, which is larger than the position error of the source (12?), but its hardness ratio HR1 = 0.03 0.29, typical of chromospherically active stars, and its character of variability allow us to assume that the star is related to the X-ray source. ... Eclipsing variability . Sine wave 1 . ...

... Wind Baffle Parameters . ... As part of this analysis, the volume, mass, center of gravity and mass moment of inertia of the telescope and optics support structure (OSS) were computed. ... The total moment of inertia of the circular floor panel, wind baffle and telescope in azimuth should be correct to 30% but is dependent on estimates of the mass of equipment supported below and above the circular floor panel. ... Table 8 : Masses and mass moments of inertia of the wind baffle components. ...

Next: Data Analysis Applications . ... The past decade has witnessed a movement within the astronomical software community towards Open Systems . ... We present examples of user-customizable systems that can be built from existing tools, based on commonly-used infrastructure: a parameter interface library, FITS file format, Unix, and the X Windows environment. ... However, the currently available parameter file systems have serious limitations when inserted into a heterogeneous environment. ...

Find Similar Abstracts (with default settings below ) . ... Also-Read Articles . ... Parameters of the 41 Dra system components . ... 00/2001 . ... Stars: Binaries, Binaries: Fundamental Parameters, Binaries: Individual . ... 61B Based on spectral and speckle-interferometric observations of the system 41 Dra, model atmosphere parameters of the system components have been derived: component Aa - T eff = 6500K, lg g = 3.99, R = 1.87 R solar , component Ab - T eff = 6500K, lg g = 4.11, R = 1.61 R solar . ...

Next: Stellar models Up: Introduction Previous: Photometry Contents . In a hierarchical stellar system, the separation between two neighboring stars is always much smaller than the separation of this pair from the next companion in the system, be it another pair or a single star. ... They are also numerically easier to handle than non-hierarchical systems, since each pair can be described with the standard orbital parameters, and each star with a small number of physical parameters. ... System . ...

... IAA VLBI Analysis Center . ... First IAA SLR EOP submission to IERS Annual Report . ... Beginning of operational processing of SLR observations . ... We use several program packages for analysis mostly developed at the IAA: GROSS for processing of the SLR observations and analysis of EOP and coordinates time series, OCCAM/GROSS for computation of EOP, station coordinates, and troposphere parameters time series from the VLBI observations, GRAPE for processing of GPS observations. ...