Next: XMM_MISCDATA Up: CCF Components Previous: Appendix: List of valid Contents . While some relevant RGS calibration data are given in the general-purpose CCF components . ... Some information concerning the maintenance of RGS CCF files is given below, though more details are available in the release notes that accompany new file releases and other technical notes. ... Use of CCF components by RGS SAS tasks . ... Purpose . Functionality . Ground calibration . Maintenance procedures . ...

... The axial support is provided by 78 air pistons. ... The transverse support is provided by 38 air pistons, supported by cantilevers from the mirror cell, that act on the mirror local center of gravity surface. ... The locations where the transverse mirror support forces should be applied to the mirror are listed in Table 1 and illustrated in Figure 1. ... Figure 1: CAD drawing showing the 2.5-m primary mirror and the locations of the transverse support posts (black) and axial pneumatic pistons (blue...

... The available observational data on masses and/or luminosities of binary components and the current models for different chemical compositions of Pop I stars were used to improve the mass-luminosity relation for stars of moderate masses. ... This technique was also applied to decompose the low-mass components of several stars suspected to be unresolved binaries. ... The method is based on the minimum determination technique applied to functions of several variables covering a limited range of values...

... Gravity data reflect changes, related to the groundwater redistribution, ice melting, and precipitation accumulation. ... We apply Multichannel Singular Spectrum Analysis (MSSA, or extended EOF) technique to filter GRACE data and separate the principal components (PCs) of different periods. We performed data averaging over the large river basins of Russia. ... Fig 1. ... MSSA is a promising method for GRACE data processing, de-striping, filtering, and Principal Components (PCs) separation. ...

... Archives . ... The PCA and ICA is used for separating mixed components with some assumptions. ... The need of source separation methods in astronomy has led various adaptations of decomposition methods available. ... I rarely come up with a paper which gathered and summarized component separation methods applicable to astronomical data. In that regards, the following paper seems useful to overview methods of reducing dimensionality for astronomers. [arxiv:0805.0269] . ... Chandra Blog . ...

The spectrophotometrical complex of the 6-m telescope in Nasmyth-1 focus . ... A new sample of 360 blue compact galaxies with a strong star formation was build on the base of the Second Byurakan Survey. ... More that 20 galaxies with the extremely low-abundances of heavy elements in the range of 1/30-1/10 of the Sun's one, were found. ... During the 15-years observation term near 500 spectra of the unique source SS~433, from which the relativistic jets were found for the first time, were obtained. ...

... For every level we have plotted the dependence between width and Lande factor and obtained the linear regression parameters: the inclination, the zero Lande factor line width and the correlation. ... Fig. 1. presents a model components, the intensity of which decreases (b) line with 10 and increases (c) to the center of spectral line (the field is 12 k6s). ... Our results show strong dependencies of line width on the level of width measurements. ...

... Can do almost everything that Miriad, AIPS and Difmap can plus more. ... Component Fluxes cont. ... Model fit to VSOP and ground- only VLBI data in Difmap ) Tasks, commands Miriad task Visibility plane model fitting Image plane model fitting Image plane integrated flux Uvfit, uvmodel Difmap command Modelfit AIPS task Uvfit, (slime) Aips ++ function image .fitsky, imagefitter (spatial), image .maxfit, image .fitprofile, imageprofiler image .statistics image .getchunk, ...

... We also identified two other spectrally unique terrains, corresponding to the northern polar ice cap, and to the southern winter polar hood. Comparisons with mineral spectra indicate the possibility of different H 2O- or OH-bearing (i.e., hydroxides and/or hydrates) minerals existing both in northern Acidalia and in the nearby intermediate albedo terrain. Hydrated minerals do not appear to be spectrally important components of the southern hemisphere dark terrains imaged by HST in 1997. ...

GROUPS OF ALGEBRAIC TRANSFORMATIONS OF AFFINE VARIETIES FINAL REPORT FOR THE THREE YEARS KARINE KUYUMZHIYAN 1. ... The latter is an algebraic variety with the given field of rational functions and an infinitely transitive regular action of a group of algebraic automorphisms generated by unipotent algebraic subgroups. ... Quotient groups. ... Since over R there exist irreducible non-connected varieties, we cannot have even one-transitivity of any connected group of automorphisms. ...

Understanding the early phases of assembly and formation of galaxies is a challenge. ... The IAU symposium 317 at the XXIX IAU GA in 2015 will take place at the verge of a revolution that is brought about by the availability of unprecedent new data, provided by the Gaia satellite, space telescopes (HST, Spitzer) and by a number of large ground-based spectroscopic and photometric surveys of the Milky Way, M31 and external galaxies. ...

... W e study the SPS for each of regions in the Bridge, as a function of velocity and of velocity integrated width. ( v): There is considerable variation in the HI structure throughout the MB. W e probe the power spectra for four different regions in the Bridge (see Figure 1). ... W e find that the northern regions have a peak value of (v) which is ver y distinct from the sout her n regio ns. ( dv): The variation of the power spectrum index, as a function of velocity is shown in Figure 3. ...

... Co-ordinate systems description . Directories structure . The file names' construction . The file set description . ... The orbital information for each month is presented in the separate directory. The INTERBALL orbital data are located on the STDA server, for each month in the separate subdirectory, which name consists from the year (YYYY) and month (MM) numbers. The Parent Directory of the Tail Probe orbital data is http://www.iki.rssi.ru/da/interball/tail/orbit/ . ...

... We present the first results of the application of Positive Matrix Factorization (PMF) to the analysis of molecular line spectra. ... The principles of the method are discussed and some results from the analysis of -spectra from the Thumbprint Nebula are shown. ... The Positive Matrix Factorization . ... Thumbprint Nebula . ... Figure 1: a) The first 20 singular values of a matrix containing the 92 -spectra used in the analysis. b) An example of a factorization of rank one . ...

Periodical Regularities of Polar Motion in the Pulkovo Latitude Variations N.O.Miller (GAO RAS) Abstract The work studies the main component of olar Motion, obtained from variations in the Pulkovo latitude (1840­2014). ... It was shown that time changes in the amplitude and phase of Chandler polar motion can be studied by means of long term observation time series of latitude at a single observatory, even if these observation records have gaps. ... Fig. ... The residue from SSA reconstruction Phi. ...

Next: Transparency of the Stochastic Up: Model of the Galaxy Previous: Frequency distribution of galactic . ... The parameters of the model resulted from a numerical fitting of various data, such as the observed distribution of the young star population and neutral hydrogen, the density of population II stars in the vicinity of the Sun, the galactic rotation curve and the dynamics and distribution of globular clusters   and dwarf irregular satellites of the Galaxy. ...

... For SIMS (Secondary Ion Mass Spectrometry) analysis, a solid surface is bombarded by primary ions of some keV energy. ... The subsequent mass analysis of the emitted ions provides detailed information on the elemental and molecular composition of the surface. ... Extremely short ion pulses with a duration below . ... By rastering a fine-focussed ion beam over the surface, like an electron beam in an electron microprobe, mass resolved secondary ion images (chemical maps) can be obtained...

Authors: V.A. Marsakov , T.V. Borkova , . ... It is shown that general populations of globular clusters and metal-poor field stars are components at least of three subsystems occupying different volumes in the Galaxy. The thick disk and proto-disk subsystems are genetically associated with the Galaxy. ... It is argued that heavy-element enrichment and the collapse of the proto-galactic medium occurred mainly in the period between the formation of the proto-disk halo and thick disk subsystems. ...

... 2014 July 21 . Spacecraft Rosetta Shows Comet has Two Components . Image Credit: ESA / Rosetta /MPS for OSIRIS Team ; MPS /UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA . Explanation: Why does this comet's nucleus have two components? The surprising discovery that Comet 67P/Churyumov–Gerasimenko has a double nucleus came late last week as ESA 's robotic interplanetary spacecraft Rosetta continued its approach toward the ancient comet's core. ... About APOD | ...

... Pulsars offer a variety of observables for study of interstellar scattering. Observations of scattering of nearby pulsars and intra-day variable quasars point to the existence of a component of the interstellar medium (ISM) which has properties quite different from the more distant, diffuse ISM. ... The time series of electric field emitted by the pulsar is convolved with an impulse-response function due to scattering, when sampled at the observer plane [1]. ... Nearby interstellar scattering. ...