... We demonstrate through numerical simulations that model parameters estimated with our technique are essentially bias-free, even when the average number of counts per bin is 1. ... The IW technique avoids such biases by estimating through successive iterations, where for each iteration, j, , and the best-fit parameters are determined by minimization of . ... In our sample, we find that the minimum values and best-fit parameters converge after about 6 iterations. ...

Еще в разделе: (Показать все результаты (>1990) - www.adass.org/ )

• Refining the Guide Star Catalog: Plate Evaluations
• A Graphical Planning and Scheduling Toolkit for Astronomical Spacecraft
• Towards Optimal Analysis of HST Crowded Stellar Fields

MATHEMATICAL MODELING: . ... This model is developed on the base of the probabilistic description of the collisional aeronomical processes and is realized on a computer as the numerical system (stochastic model). ... Shematovich, V.I., Bisikalo , D.V.             Nonequilibrium processes in the planetary and cometary atmospheres. ... In Russian) . ... Piarnpuu , A. A.; and Shematovich, V. I.       Construction of structural stochastic models of collision processes in rarefied gas media (abstract) . ...

Еще в разделе: (Показать все результаты (>42) - www.inasan.rssi.ru/ )

... The large body of near infrared observations presented in Testi et al. (1997; 1998) are analysed with the aim of characterizing the young stellar clusters surrounding Herbig Ae/Be stars. The results confirm the tendency of early Be stars to be surrounded by dense clusters of lower mass "companions", while Ae stars are never found to be associated with conspicuous groups. ... Only the most massive stars (10-20Msun) are found to be associated with dense (10^3 pc^-3) stellar clusters. ...

Еще в разделе: (Показать все результаты (>7805) - www.arcetri.astro.it/ )

• BD_disks (Abstract)
• cephe (Abstract)
• Astrophysical quantities

Proceedings of the Particle Physics and Early Universe Conference (PPEUC). For this paper: postscript PPEUC CMB index 1 Likelihood Analysis.. ... Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, U.K. Max Tegmark . ... We discuss the problems of applying Maximum Likelihood methods to the CMB and how one can make it both efficient and optimal. ... A much fuller account of most of this work is available ( Tegmark, Taylor & Heavens (1997) ). ...

Еще в разделе: (Показать все результаты (>997) - www.mrao.cam.ac.uk/ )

• Analysis of (radio) spectra Bojan Nikolic web pages (r. 329)
• Inference of Coefficients for Use in Phase Correction Bojan Nikolic web pages
• Inference of Coefficients for Use in Phase Correction

SN 1989B Light Curve Analysis. ... In the light curve depicting their observations, definite trends are noted, here is a "thumb-nail" analysis of the the magnitude estimations of the bright SN (1989B) in the galaxy NGC 3627 (M66). ... The observations were inserted against the V magnitude templete of BL, CCD photometric data, (Wells et. al, (1994) and a color trend (B-V) histogram of the mean type Ia SN (BL)(nutemp.gif). Key Words: Amateur Observations, Supernova, Magnitude Estimates, 1989B . ...

Еще в разделе: (Показать все результаты (>2601) - www.sai.msu.su/ )

• Misc Planetary Picture List
• Abstract Registration Form - INTERNATIONAL SYMPOSIUM "ASTRONOMY - 2005: CURRENT

Workshop on geometric analysis and spectral theory . ... On a class of random walks on groups with infinite number of generators". ... Optimal transportation, weak flows and very degenerate elliptic PDE's". ... Singular solutions to fully nonlinear elliptic equations". ... I will give some hints on how this conjecture is related to minimal surface theory and I will describe some flatness results for non local equations on one hand and on elliptic equations on riemannian manifolds on the other hand. ...

Еще в разделе: (Показать все результаты (>648) - www.mccme.ru/ )

• Workshop on geometric analysis and spectral theory. Schedule

FOS Pre-COSTAR Target Pointing Analysis Cynthia J. Taylor Space Telescope Science Institute FOS Instrument Science Report CAL/FOS-126 August 1994 Abstract A log of Spacecraft Small Angle Maneuvers (SAM) during the Faint Object Spectrograph target acquisition sequence has been compiled from March 21, 1991 to December 3, 1993. ... Figures 1-12 show the plots versus time for the magnitude, V2, and V3 pointing offset SAMs. ... Figure 5: V2 pointing offset SAM versus time for FGS 1 and FGS 3 dominant. ...

Еще в разделе: (Показать все результаты (>14899) - www.stsci.edu/ )

• WFPC2 ISR Abstract
• WFPC2 TIR Abstract
• Abstract

The total radiative power output from the hot outer layers of six late-type stars (of different spectral types and luminosity class) is derived via an emission measure technique. This analysis was based on observational data from the spectral range 100A to 3000A obtained as a result of three separate satellite missions, i.e. Hubble Space Telescope, International Ultraviolet Explorer and the Extreme Ultraviolet Explorer. ...

Еще в разделе: (Показать все результаты (>2378) - star.arm.ac.uk/ )

• Abstract
• Abstract 218
• Armagh Observatory

... Abstract (txt) . ... Xiao-li Meng (Harvard U) . ... presentation (pdf) . ... web page: astrostatistics.psu.edu/stat05.html . ... H. Kang (Department of Statistics, Harvard University), D. van Dyk (Department of Statistics, University of California at Irvine), V. Kashyap (Harvard-Smithsonian Center for Astrophysics), A. Connors (Eureka Scientific) . ... Poster (ps) . Poster (pdf) . ... Y. Yu, X.L. Meng (Dept. of Statistics, Harvard Univ.) ... Y. Yu (Dept. of Statistics, Harvard Univ.) ...

Еще в разделе: (Показать все результаты (>2254) - hea-www.harvard.edu/ )

• Statistics 310 2005-2006
• Special Session on AstroStatistics at HEAD 2013
• Jonathan's ASC documents

... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Planetary Nebulae and HII regions in the Elliptical Galaxy NGC 5128 . ... NGC 5128 is the closest example of a giant early type (elliptical or S0) galaxy. Although often dubbed as a peculiar elliptical galaxy since it has a dust lane with recent star formation and an active galactic nucleus, the majority of early type galaxies have similar structures as revealed by recent surveys. ...

Еще в разделе: (Показать все результаты (>66035) - www.eso.org/ )

• ESO - Thesis Topic: The binary central stars of planetary nebulae
• ESO - Thesis Topic: Star formation: probing magnetic fields and their spheres
• ESO - Thesis Topic: Space weather in young solar systems

Proposal Identification No.: R2998 Date Received: 2015-Feb-03 17:10:01 Technical Page This proposal has not been submitted before. Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Planetary Radar Solar System 37.8 Hours 1 Radar Imaging of Asteroid 16 Psyche We propose to obtain delay-Doppler imaging of the MBA 16 Psyche, the largest M-class asteroid and the target of a proposed spacecraft mission. ...

Еще в разделе: (Показать все результаты (>3712) - www.naic.edu/ )

• http://www.naic.edu/vscience/schedule/tpfiles/CartertagR1929tp.pdf
• http://www.naic.edu/vscience/schedule/tpfiles/BennertagR2662tp.ps
• http://www.naic.edu/vscience/schedule/tpfiles/ShepardtagR2998tp.ps

Estimations of the change of the Sun s mass and the gravitation constant based on high-accuracy observations of planets and spacecraft . ... More than 635 000 positional observations of planets and spacecraft of different types have been used for estimating possible changes of the gravitation constant, the solar mass, and semi-major axes of planets. ... gravitation constant, positional observation, Sun's mass. ...

Еще в разделе: (Показать все результаты (>1001) - www.ipa.nw.ru/ )

• list1
• Keywords_312
• Keywords_89

XMM-Newton Science Analysis System Page: 1 orbit March 18, 2004 Abstract Create a FITS timeseries \HK-like" le from the ODF Spacecraft Reconstructed Orbit File. ... Both sets of values will be written into a standard OGIP-compliant FITS binary extension table with a TIME column value, derived from a start, stop and sampling interval time, each speci ed by the user. ... StartANDEndNotInODFRange (error) Start AND End times selected not congruent with input ODF obs times. ... 7 Output Files 1. ...

Еще в разделе: (Показать все результаты (>29214) - xmm.vilspa.esa.es/ )

• http://xmm.vilspa.esa.es/sas/6.1.0/doc/orbit.ps.gz
• http://xmm.vilspa.esa.es/sas/7.0.0/doc/orbit.ps.gz
• http://xmm.vilspa.esa.es/sas/8.0.0/doc/orbit.ps.gz

... THE SIMPLEST MODEL. ... 13, Moscow 119992, Russia E-mail: san@sai.msu.ru Abstract: The analysis of the simplest model shows that an asteroid ­ rubble pile evolves, depending on the parameter V2d (where V is the average velocity of fragments and d is the average distance between fragments), either as a conglomerate of "independent mutually gravitating clusters" (when V2d < fm, where f is the gravitational constant and m is the average mass of a fragment) or as a "receding cluster" (when V2d > fm). ...

Еще в разделе: (Показать все результаты (>154) - selena.sai.msu.ru/ )

• Vladimir V. Busarev
• Родионова Жанна Федоровна
• Aleksei A. Berezhnoi

Tail Probe is one of the satellites of the INTERBALL program. ... Collection of the orbital elements | ... Flight situation analysis during operations scheduling . ... Two stages of the orbital situation analysis are presented: . ... The satellites motion calculation during the flight situation analysis is based on the orbital elements, determined by the Ballistic center at KIAM RAN. The modified (by backward integration) orbital elements are usedduring the aposteriory situation analysis. ...

Еще в разделе: (Показать все результаты (>1502) - www.cosmos.ru/ )

• INTERBALL AURORAL PROBE SITUATION ANALYSIS
• Space Research Institute (IKI) Seminar
• The Second Announcement

Abstract . A first-generation CMOS Charged Particle Spectrometer chip [1] was designed at JPL for flight on the STRV-2 spacecraft. These devices will collect electron and proton spectra in low Earth orbit as part of an experiment to demonstrate Active Pixel Sensor (APS) technology in space. This paper presents the results of total dose testing on these chips and, where possible, attempts to extend the results to other Active Pixel Sensors. ...

Еще в разделе: (Показать все результаты (>1213) - www.sao.ru/ )

• Radio patrol survey by Gregory and Taylor
• Spectra of 300 sources
• XID: Cross-Association of ROSAT/Bright Source Catalog

... The real-time system for astronomical observations on the telescopes of the virtual observatory from ICAMER, SAO RAS, and BNO INR RAS . ... 81K Three large astronomical observatories-- ICAMER, SAO and BNO JNR RAS- are located in the compact area of the Northern Caucasus. ... The unification and synchronization of data-flows from these telescopes will allow one to carry out astronomical observations at a new level and to realize a virtual observatory with new capabilities for space research. ...

Еще в разделе: (Показать все результаты (>643) - jet.sao.ru/ )

• Structure and properties of IRC+10216
• High-resolution Near-infrared Study of the Deeply Embedded Young Stellar Object
• Bispectrum Speckle Interferometry of the Massive Protostellar Object S140 IRS

ON THE IMPACT OF THE GALACTIC ABERRATION ON VLBI-DERIVED PRECESSION MODEL Z.M. MALKIN Pulkovo Observatory Pulkovskoe Ch. ... Corrections to adopted precession rate are usually computed from the linear trends in long-term time series of celestial pole offset (CPO), which are the differences between the measured and the theoretical coordinates of the celestial pole. ... CONCLUSIONS We have estimated the impact of GA on parameters of precession-nutation model derived from VLBI observations. ...

Еще в разделе: (Показать все результаты (>358) - www.gao.spb.ru/ )

• http://www.gao.spb.ru/english/personal/malkin/publ/zm135.pdf
• http://www.gao.spb.ru/english/personal/malkin/publ/zm12f.pdf
• http://www.gao.spb.ru/english/personal/malkin/publ/zm10c.pdf

... The metal abundance gradient in the disk of the Galaxy is found from stars with abundance determination from detailed analysis: d[Fe/H]/dR=(-0.05?0.01) kpc -1 . It is shown that the gradient can be explained by the fact that the disk is constituted of two metallicity groups of stars with an abundance jump between the groups. ... По звездам с определениями [Fe/H] из детального анализа найден градиент металличности в диске Галактики: d[Fe/H]/dR=(-0.05?0.01) кпс -1 . ...

Еще в разделе: (Показать все результаты (>62) - ip.rsu.ru/ )

OH/IR stars as the progenitors of planetary nebulae P. te Lintel Hekkert and A.A. Zijlstra Based on a new sample of (IRAS based) OH/IR stars, and the catalogue of planetary nebulae compiled by Acker (1983), we study the relation between these two groups of objects, in terms of the kinematics and the Galactic distribution. ...

Еще в разделе: (Показать все результаты (>8167) - www.atnf.csiro.au/ )

• Image Digitising and Analysis of Outflows from Young Stars
• Programme - Abstract
• Two New Planetary Nebulae and an AGN in the Galactic Plane