... Broadening is due both to the natural width of the transition and to the velocity spread of the absorbing atoms along the line of sight. In the ideal case of atoms at rest. ... In the program the velocity is assumed to be gaussian, thus: . velocity of the cloud relative to the observer. ... An absorption is measured in the spectrum at = corresponding to a rest wavelength . ... In practice the program computes the absorption profile in the cloud reference frame . ...

Еще в разделе: (Показать все результаты (>2719) - www.sao.ru/ )

• Some statistical trends and distributions
• Introduction
• Corrections to the probability distribution

... The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another server or reference time source, such as a radio or satellite receiver or modem. ... Information on the NTP architecture, protocol and algorithms can be found in the Further Information and Bibliography page. The Building and Installing the Distribution page presents an overview of the procedures for compiling the distribution and installing it on a typical client or server. ...

Еще в разделе: (Показать все результаты (>2087) - www.sai.msu.su/ )

• Zen: snrad queries

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Lower panel: The ME spot map of the star in orthographic projection, showing the disc of the star as it would be seen by an observer on the Earth at the labelled rotation phases (see the text). ... We carried out high-resolution spectroscopy and BV(I)C photometric monitoring of the two fastest late-type rotators in the nearby Pictoris moving group, HD 199143 (F7V) and CDтИТ64 1208 (K7V). ...

Еще в разделе: (Показать все результаты (>2309) - star.arm.ac.uk/ )

• Galactic distribution and absolute magnitudes

http ://hea-www.harvard.edu/ AstroStat /slog/2008/eotw-chisq- distribution / Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders Fri, 01 Jun 2012 18:47:52 +0000 hourly 1 http ://wordpress.org/?v=3.4 http ://hea-www.harvard.edu/ AstroStat /slog/2008/eotw-chisq- distribution /comment-page-1/#comment-308 Alex Sun, 27 Jul 2008 01:52:08 +0000 http ://hea-www.harvard.edu/ ... Thanks, Aneta, very useful comment. ...

Еще в разделе: (Показать все результаты (>3966) - hea-www.harvard.edu/ )

• Comments on: [ArXiv] Identifiability and mixtures of distributions, Aug. 3,
• The AstroStat Slog Blog Archive chi-square distribution [Eqn]
• The AstroStat Slog Blog Archive [ArXiv] Bimodal Color Distribution in GCS,

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. ...

Еще в разделе: (Показать все результаты (>662) - xray.sai.msu.ru/ )

• Test of the Initial Mass-Ratio Distribution
• Frequency distribution of galactic binaries
• Discussion and conclusions

spaceweb@oulu.fi - last update: 1 July 1998, 1200 UT (RR) . ... Relates the wave number k to the wave frequency. ... From the equation of motion , m d v /dt = q( v x B ) one can calculate that, in a presence of magnetic field B , a charged particle is accelerated in direction perpendicular to both v (perp) and B . ... The angle a between magnetic field B and velocity vector of a charged particle, v ., i.e., sin a = v(perp) / v(total), where v(perp) refers to the velocity component perpendicular to B . ...

Еще в разделе: (Показать все результаты (>707) - www.iki.rssi.ru/ )

• Plasma theories [Oulu]
• Related Solar-Terrestrial Physics Servers
• Frames of Reference: The Basics

... Starting from a grid of theoretical population synthesis models we constructed a set of model galaxies with a distribution of ages, metallicities and intrinsic reddening. ... We propose an optimization technique that combines active learning with an instance-based machine learning algorithm. ... In order to solve the problem more efficiently, we pose it as a learning problem, where a learning algorithm learns the reddening parameters , and with a forward model we compute . ... Let be the test set. ...

Еще в разделе: (Показать все результаты (>1765) - www.adass.org/ )

• Calculating the Position and Velocity Components of HST
• Modelling Spectro-photometric Characteristics of Nonradially Pulsating Stars
• Synthetic Images of the Solar Corona from Octree Representation of 3-D Electron

... Here we present our first results of a study of the neutral hydrogen gas (HI) in the southern spiral galaxy NGC 253 with the Australia Telescope Compact Array . ... Several peculiar features have been found. ... Similar features have been found in other starburst galaxies like M82, NGC 1808 and NGC 4945 and are interpreted in terms of bar-induced gas dynamics and star formation. Keywords. galaxies: individual (NGC 253) - galaxies: active - galaxies: ISM - galaxies: kinematics and dynamics. ...

Еще в разделе: (Показать все результаты (>17225) - www.atnf.csiro.au/ )

• Distribution of Schedule Files
• The Dispersion Relation
• The IR Spectral Energy Distribution

... From the uvby photometry and proper motions for about 5500 nearby F stars we have found the following: (i) F stars , taken in narrow ranges of metallicity , show at [fe/H] 0 rather distinct cut-off in their distribution along the Main Sequence (MS) at the blue side, which is suggested to be an indication for the MS turn-off in stellar groups of fixed metallicity ; (ii) the corresponding turn-off age from theoretical isohrones strongly correlates with the ...

Еще в разделе: (Показать все результаты (>97) - ip.rsu.ru/ )

• RR LYRAE VARIABLES SUBSYSTEMS IN THE GALAXY, figures
• Subsystems of the Galactic halo, figures
• Vertical Structure, figures

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

Еще в разделе: (Показать все результаты (>256) - space.univ.kiev.ua/ )

• Celestial Mechanics

We explore variations in dust emission within the edge-on Sd spiral galaxy NGC 4631 using 3.6-160 ЮМm Spitzer Space Telescope data and 450-850 ЮМm JCMT data with the goals of understanding the relation between PAHs and dust emission, studying the variations in the colors of the dust emission, and searching for possible excess submillimeter emission compared to what is expected from dust models extrapolated from far-infrared wavelengths. ...

Еще в разделе: (Показать все результаты (>15909) - www.stsci.edu/ )

• Introduction
• covar2ellipse.pro (JWST Pipeline routines in IDL)
• Systematic Uncertainties Special Cases

... In brief: the frequency-dependent radiative transfer equation is solved for a dust under assumption of spherically-symmetric geometry for its distribution taking into account particle size distribution and quantum heating effects for the very small dust particles. ... Table: Model parameters for IRAS04296+3429. ... parameter . ... hot dust shell) . ... The best fit to the spectral energy distribution of IRAS04296 is shown by heavy solid line (see Table2 for details concerning parameters of the model...

Еще в разделе: (Показать все результаты (>954) - jet.sao.ru/ )

• harak_e
• The peculiar post-AGB supergiant IRAS04296+3429: optical spectroscopy and its
• di_eks

alignasn -- Change the relative shifts in association file alignasn association . ... calnicb style association file with list of images to be aligned. ... Interactive program to compute relative shifts of images in an association file. ... After computing the relative shifts of the direct images, alignasn searches for corresponding grism images for each of the direct images. ... The grism association is then updated with the same relative shift measurements as determined from the direct images. ...

Еще в разделе: (Показать все результаты (>238) - www.stecf.org/ )

• MAKEPRFCORR (Nov98) --- nictools --- MAKEPRFCORR (Nov98)
• MAKEASN (Nov98) --- nictools --- MAKEASN (Nov98)
• ST-ECF IRAF package

Relative timing of XMM-Newton A. Martin-Carrillo1,3, M.G.F. Kirsch1, E. Kendziorra2 2 ESA XMM-SOC, ESAC Spain IAAT, University of Tuebingen, Germany 3 University Complutense Madrid, Spain 1 Antonio Martin-Carrillo XMM-Newton EPIC Page 1 menu · relative timing accuracy ­ ­ ­ ­ ­ brief introduction to relative timing brief introduction to all pulsars analyzed crab monitoring other ... Antonio Martin-Carrillo XMM-Newton EPIC Page 18 ...

Еще в разделе: (Показать все результаты (>7788) - xmm.vilspa.esa.es/ )

• Procedure
• Null-hypothesis probability distribution for a weighted sum of Poissonian
• EMOS redistribution

Measuring system: (1) is alternating voltage source, connected to transmitting electrode, (2) is phase sensitive voltmeter, connected to receiving electrode, (3) is grounded shield, (4) is object under imaging, (5) is unperturbed electric field lines connecting transmitting and receiving electrodes. ...

Еще в разделе: (Показать все результаты (>551) - www.cplire.ru/ )

• EIT Reconstruction Paper 1
• Online EIT reconstruction server

... We are using Canadian Galactic Plane Survey l 74.2њ, -3.6њ < b This poster gives preliminary results for a full-fledged analysis of the gas properties and distribution of HISA features in the CGPS. ... where T ON and T OFF are observed brightnesses on and off the HISA feature, T S is the spin or excitation temperature of the HISA gas, tau is its optical depth, T C is the continuum intensity, and p is the fraction of H I emission lying behind the HISA feature. ... GIF | ...

Еще в разделе: (Показать все результаты (>3482) - www.naic.edu/ )

• pointing
• weight on turret floor

The summary plot shows the monthly time distribution of all predicted magnetic conjugations between four spacecraft considered. ... To show the time of conjugation, in frame of the corresponding day for each SC the corresponding colour and line are used: . for the first SC the red color and the first line are used, . ... On the plot the SC names are shown by the corresponding colours. The summary plot permit to find the simultaneous magnetic conjugations of 3 and even 4 satellites. ...

Еще в разделе: (Показать все результаты (>1276) - www.cosmos.ru/ )

• The plot of the magnetic conjugation's time distribution
• Frames of Reference: The Basics
• Solar Tracker (OSD)

To construct two-dimension distribution of minor planets user should specify elements/ parameters/ function that will be plotted as abscissas and ordinates. In three-dimension case one should add to them the element plotted on Z axis. ... Though you may choose elements plotted along different axes at will, often there is good reason to plot such elements as a, n, or n" along X axis (two-dimension distributions) and to plot them along Y axis in three-dimension case. ...

Еще в разделе: (Показать все результаты (>434) - www.ipa.nw.ru/ )

• ENGAMPLE

The aim of this section of the course is to enable you to use simple computer programs to solve a variety of common astronomical tasks. ... I have (somewhat arbitrarily) decided to use Python for this course, because it seems to be gaining popularity fast for astronomical data handling, and because some of you will have encountered it at the ATNF course. ... We've put Python (plus all relevant libraries) on the Stromlo Linux computers moron and maggot. ... Now log in to moron (or maggot). ...

Еще в разделе: (Показать все результаты (>653) - www.mso.anu.edu.au/ )

• Proposed Facility
• David Nicholls: CV and publications
• ASTR1002 Assignment 1

... Results 3. ... 2004), Escapa (2011): Hamiltonian approach, simplified elastic response. ... PАg. ... Let us recall that assuming a rheological model based in Smith (1974) , Wahr (1979) and IERS (2010) for the elastic/anelastic response of the Earth, the second order harmonic components of the redistribution potential admit a truncated development in complex spherical harmonics in the form Generalized Love Numbers, dependent on: Harmonic order, Excitation frequencies In magnitude, PАg. ...

Еще в разделе: (Показать все результаты (>303) - www.gao.spb.ru/ )

• http://www.gao.spb.ru/english/as/j2014/presentations/kudryashova.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/galushina.pdf
• http://www.gao.spb.ru/personal/miletsky/papers/mil+iv+nag-2013_gia.pdf