... 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. ...

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• A Technique for Determining Proper Motions from Schmidt Plate Scans at ST ScI
• Refining the Guide Star Catalog: Plate Evaluations
• A Method for Minimizing Background Offset Errors When Creating Mosaics

Proceedings of the Particle Physics and Early Universe Conference (PPEUC). For this paper: postscript PPEUC CMB index 1 Introduction.. ... Combining measurements of the thermal Sunyaev--Zel'dovich effect with X-ray data allows calculation of a direct, physical estimate of Hubble's Constant ( ) without the need for distance-ladder-type arguments. ... 1 Introduction . ... 3 Calculating Hubble's Constant . 4 Errors In Determination of . ... PPEUC Proceedings . Fri Jun 27 15:29:33 BST 1997 ...

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... As a result of this discovery, it is possible to contemplate an instrumental extension which results in the recovery of a major portion of lost resolution due to the blurring effects of the PSF. Implementation of the instrumental extension and the resulting resolution enhancement is independent of prior knowledge of or access to the observed data. The method is applied to HST images as well as several one dimensional spectral data sets. ... Image and Spectrum Recovery . ...

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• Maximum Likelihood Estimation of Galaxy Morphology: Faint HST Wide Field Camera
• Comparisons Between Observed and Model PSFs in WFPC Image . Restoration
• Improved Prescription Retrieval and PSF Modeling Code

ABSTRACT . Single electron detection is desirable in systems incorporating EBCCDs. The sources of noise in single electron counting are discussed and an expression is given for the total noise. INTRODUCTION . Electron bombarded charge coupled devices (EBCCDs) have been recognized as having performance advantages over competing technologies in terms of their high sensitivity, low noise and high spatial resolution. ...

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• CMOS Tutorial Abstract - PixelVision
• Abstract
• The Hamburg/SAO Survey for Emission-Line Galaxies

... A survey of Armagh was to be carried out in order to better determine how much money is wasted each year in Armagh on bad lighting. ... Bad Up Light . ... This information allowed more accurate estimates to be made of how much light is wasted in Armagh, and therefore how much money and coal is wasted, as well as how much carbon dioxide produced. ... Lights per metre . ... denote the average percentage of light wasted per luminaire, wasted meaning ineffective lighting (up, to the sides etc.) . ...

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• Coronal Hole Diagnostics out to
• Abstract 206
• Abstract 200

Next: NICMOS/HST H-band (F160W) Images Up: NICMOS Science Previous: HST NICMOS Observations of . ... Observations of P . ... The NICMOS team has devised a comprehensive program of observations of the Galactic Center. ... Data in hand give a first look at variability and a detailed look at the search for the tip of the main sequence will be discussed where NICMOS has demonstrated adequate sensitivity and photometric precision to identify likely O8-B1 stars at the Galactic Center. ...

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• STScI NICMOS Software
• ST-ECF Grism Spectrum Software for NICMOS Grism Data
• Some Experiments with the Restoration of NICMOS Camera 2 Images of OMC-1

... Programme . ... Abstract: The eastern jet of Centaurus A is well resolved in Chandra X-ray images, which have been used to measure its bounding pressure and width. ... The most likely cause is mass entrainment by the jet. ... If dissipation is dominated by stellar mass injection, jet width becomes highly sensitive to the bounding pressure, so that small changes in the environment can determine whether the jet remains confined or expands rapidly in width, so inflating a radio lobe. ...

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• IAU SYMPOSIUM 216 - abstracts
• Introduction
• Infrared and Sub-millimetre Observing Conditions on the Antarctic Plateau

... Higher Criticism Statistic: Theory and Applications in Cosmology and Astronomy [.pdf] . ... pdf ] . ... Fitting Narrow Emission Lines in X-ray Spectra [.pdf] . ... A Convex Hull Peeling Depth Approach to Nonparametric Massive Multivariate Data Analysis with Applications . Abstract: We explore the convex hull peeling process to develop empirical tools for statistical inferences on multivariate massive data. ... We define the convex hull peeling depth, which enables to order multivariate data. ...

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• Cool Stars 10 - V. Kashyap and J. Drake: DEM Reconstructions
• Watching the Stars go `Round and `Round
• The AstroStat Slog Blog Archive [Quote] Abstract ? There are none.

... 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 . ...

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... Abstract . We have observed CO J=1-0 and J=2-1 emission in a cloud known to contain H I Self Absorption (HISA) (Gibson et al. 2000) in Perseus ( l ~= 1°, b ~= 139°) in order to determine the molecular gas fraction and the evolutionary state of the cloud. ... Student abstract . Les r sum s diffus s sur la page web de la CASCA 2002 sont sujets des modifications, de fa on les conformer aux standards de pr sentation HTML et au r pertoire de caract res typographiques disponibles. ...

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• NAIC-NRAO Single Dish Summer School NAIC-NRAO Single Dish Summer School 2005
• Galactic Spiral Structure in H I Emission and Self-Absorption
• Summer 2012 REU Project Abstracts National Astronomy and Ionosphere Center

... This paper discusses evidence for and properties of disks associated to brown dwarfs in the star-forming region rho-Oph. ... We present low-resolution near-infrared spectra in the J, H and K bands, and determine for each source spectral type, extinction, effective temperature a nd luminosity by comparing the spectra to those of field dwarfs and to the most recent model stellar atmospheres. ... The coolest object in our sample has mass in the range 8-12 Mjup (0.008-0.012 Msun). ...

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• Serpmap (Abstract)
• BD_disks (Abstract)
• LonGSp: A NEAR INFRA-RED SPECTROMETER

THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE BY MEANS OF DIGITAL MODELS. ... The surface brightness of Mercury was measured Danjon (1933, 1949, 1953) and Harris (1961) in phase angle 3o-123o. The analysis of the various data of the integral photometric gives the results of determination of the main photometric constants for Mercury. ... THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE: S.G. Pugacheva The surface brightness of the Mercurian images was established on the geologic map Mercury. ...

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• http://selena.sai.msu.ru/Kozl/Publications/ms40/50_Kozlova_Shevchenko.pdf
• Geophysical Research Abstracts
• Шевченко Владислав Владимирович

Next: Introduction . ... A spike immunity method of digital integrating radiometer signals in the jamming environment is described. ... The purpose of the method is real-time signal processing, and the basic is an alternative selection of the least offset signal estimation using nonparametric "Nearest Neighbor" rule. ... The additive spike-like jam makes the "tails" of the distribution "heavier" which leads to different offsets for linear and rank mean estimation on the integrating interval. ...

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• The peculiar post-AGB supergiant IRAS04296+3429: optical spectroscopy and its
• On the problem of high spectral resolution observations of faint objects
• High-resolution Near-infrared Study of the Deeply Embedded Young Stellar Object

... Comparative study of Tl-2201 single crystals with T c =30 and 110 K by means of X-ray structural analysis and NMR. Abstract: . The crystal structure of a tetragonal single crystal of Tl-2201 with T c =30 K has been determined by the X-ray diffraction technique ( a = 3.8717(3), c = 23.224(3) Angstrom, space group I4/mmm, Z = 2). The chemical composition is found to be Tl 1.90(1) Cu 0.10(1) Ba 2 CuO 6.18(4) . ... Structural parameters of Tl-2201 cuprates with various T c have been compared. ...

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• LPCBC: Abstract 2_4
• LPCBC: Abstract, 1_5
• PLDS-3, Chernogolovka, Russia, 2001 - Program, abstracts and proceedings

Trudy GAISH, vol. LXV, 1996 . Abstracts . The global distribution of average (5 O x 5 O ) depths . of Mohorovicic discontinuity on the Earth . ... Such analysis allows detecting whether the sources of the largest anomalies reside within the Earth's core. This is possible if the limit depths of the sources exceed the depths of the core-mantle boundary. ... by Pasinok S.L. Influence of the Earth’s cover on the polar free oscillation of the Earth’s inner core is considered. ...

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... In this paper we present the results of detailed B, V, R, I, and H study of the isolated nearby blue compact dwarf (BCD) galaxy NGC6789. Judging from the literature the observed galaxy has not been resolved into stars up to now. ... The distance of the galaxy, estimated from the tip of the red giant branch (TRGB) is 2.1 Mpc which places NGC6789 close to the Local Group. ... Key words: nearby galaxies: dwarf galaxies (NGC 6789): distance moduli: star content . ... Distance. ...

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• ADS Abstract Service Results
• A Database of Optical Constants of Cosmic Dust Analogs
• Abstract book | Radiation mechanisms of astrophysical objects: classics today

... We study in this paper the effect of shock excitation of leaky and surface modes by the p-polarized electromagnetic wave incident on the rapidly ionized gaseous or solid layer. ... For example, if [pic] (solid density, multiple ionized plasma), the basic frequency [pic], [pic], [pic] we find, that the wavelength of leaky wave [pic] is in soft x rays band. ... If [pic] (low density gaseous plasma), the basic frequency [pic], [pic], [pic] we find, that the wavelength of leaky wave [pic] is in THz band...

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• Brief History Introduction Brief History Introduction
• The INTERBALL Auroral PROBE orbital elements collections
• Б. И. Рабинович, ИКИ РАН. Квантование динамических параметров солнечной системы

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. ...

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• http://www.gao.spb.ru/english/as/j2014/presentations/gross.pdf
• http://www.gao.spb.ru/english/personal/malkin/publ/zm12c.pdf
• Abstracts submission

Estimating the NEO Population and Impact Risk: Past, Present and Future . ... Since most of the risk resides in the largest impactors, finding that fraction of the largest bodies, and that none of them has a significant chance of impacting in the next century or so, "retires" more than 90 % of the impact risk, including most of the risk of a globally catastrophic impact event. ... In the mid-size range, from ~150 m to ~1 km, the main risk is from tsunami generated by an ocean impact. ...

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• Keywords_327
• Keywords_17
• Keywords_65

... In addition to time, frequency, and scale, there are two other coordinate axes within this transform space: shear-in-time (obtained through convolution with a q-chirp) and shear-in-frequency (obtained through multiplication by a q-chirp). Signals in this multidimensional space can be obtained by a new transform which we call the ``q-chirplet transform'', or simply the ``chirplet transform''. ... CHIRPLET TRANSFORM SUBSPACES . ... Relationship Between Auto Chirplet FF Plane and Radon Transform . ...

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• No Title
• Springer LINK:A&A-EE: Table of Contents Volume 316 Number 6 (1996)
• Publications