The spherical aberration affecting the HST primary mirror (Burrows et al. 1992) can seriously alter the core brightness profile of elliptical galaxies. ... In this paper we test the performance of deconvolution in recovering the original surface brightness profile in the case of elliptical galaxies observed with the HST Planetary Camera (PC). ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... 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. ...

The parameter brief (with its actual uncertainty sbrief) is the mean effective surface brightness in B-band , i.e. the mean surface brightness inside the effective aperture (the circular aperture enclosing one-half the total flux). It is expressed in mag arcsec -2 . ... 2) from the mean surface brightness "LV" inside the effective isophote (elliptical isophote enclosing one half the total flux) measured by Launberts&Valentijn (1989) . ... Effective radius . ... HyperLeda . ...

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. ...

XMM-Newton Science Analysis System . ... Meta Index . The parameter handling system allows tasks to retrieve parameters which are specified on the command line. The parameters are defined in a Parameter Specification File, which may also specify default values and allowable ranges. ... Specifying parameters . The command line . Parameter types . ... Default values . ... Index . ...

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 . ...

... CentralProcessor 0.11 documentation . ... Here we detail the input parameters that cover the overall process control, and the switches to turn on & off different parts of the pipeline. Values for parameters that act as flags (ie. those that accept true/false values) should be given in lower case only , to ensure comparisons work properly. These parameters affect how the slurm jobs are set up and where the output data products go. ... SUBMIT_JOBS . ... User Parameters - Pipeline & job control . ...

... Future seminars . P a s t seminars . Seminar council . The emission time of Gamma-Ray Bursts" . A. Sanin (IKI) . ... The three new parameters of cosmic gamma-ray bursts are introduced: the emission time, the peak energy of the emission time spectrum and the cosmological invariant parameter. ... Using this distribution the "collective estimation" of the best fitting redshifts for the group of long bright gamma-ray bursts detected by BATSE experiment was found. ...

Proposal Identification No.: ... At mid-latitudes, OI 844.6 nm emission brightness is a potentially excellent proxy for [O], and recent improvements to its forward emission model warrant renewed effort to pursue ground-based sensing using this unique emission. ... To this end, we propose several observational campaigns, spanning a variety of seasonal conditions, using combined passive optical and incoherent scatter radar instrumentation. ...

... Observational Zoo of Binaries with Compact Stars . Evolutionary Scenarios of Binary Systems . ... Evolution of Magnetic Rotators . ... Mixing types of E-P-A binary systems with non-zero orbital . ... Binary Pulsar Diversity and High Neutron Star Birth Velocity . ... Ejectors in Massive Binary Systems . ... Other Candidates for Ejecting Stars in Binary Systems . ... Cosmic Rays and Evolution of Binary . ... Sky in Gravitational Waves . ... Gravitational Waves from Coalescing Compact Binary Stars . ...

... The dependence of velocity ellipsoid parameters for various types stars upon theirage was investigated. ... For metal-rich stars ([Fe/H] -0.1) the shape of velocity ellipsoid becomes more spherical with increasing age of the stellar group and it approaches the equilibrium shape. ... По данным uvby -фотометрии, изохронным возрастам и собственным движениям ~3500 F -звезд диска в окрестности 80 пс от Солнца исследованы зависимости параметров эллипсоидов скоростей различных звезд от возраста. ...

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) ). ...

... Guider functions . ... Guide Sensor Performance . ... Guide Sensor Sky Coverage/ Star Availability . Guide Star Selection Criteria . ... Guide fiber organization and reach at plug plate . ... Plug plate holes for guide stars are identical to those for science FO . ... FOV for each of 9 guide stars is 7.4 arcsec dia. (0.45 mm FO, Sumitomo IGN-05/10) . ... Selected guide stars must have no neighbor stars within TBD (5 arcsec) radius that have a brightness within TBD (5 mag.) of guide stars . ...

Physical and dynamical parameters of particles in outbursting Comet 17 P/Holmes . ... The time depending offset between the center of brightness and center of mass of the comet nucleus has been determined on the ground of positional observations of the comet. ... The motion of these particles allowed subsequent offset between the center of brightness and center of mass of the comet nucleus to be obtained from positional observations. ... comet, dynamical model, outburst, brightness. ...

SN Search from +50 to the Pole - Part 1. ... The program Sunsrch.zip was presented to the I.S.N.on 1/9/95 to aid the prospective supernovae hunter in detecting extragalactic supernova events in a controlled area of from +50 degrees to the Pole. ... Part 2 of the program is now completed and adds an additional 172 galaxies fainter than magnitude 13.4 (there were two events that occured in that area during the past two years [SN 1995F and SN 1995J]), and brighter than magnitude 12.5. ... THE GALAXIES . ...

The night sky brightness, together with number of clear nights, seeing, transparency, photometric stability and humidity, are some of the most important parameters that qualify a site for front-line ground--based astronomy. ... Night sky at ESO-Paranal (Chile). ... Night sky brightness data . ... UBVRI night sky brightness at ESO-Paranal during sunspot maximum (A 2003, PDF) . ... The Dancing Sky: six years of night sky observations at Cerro Paranal (Starlight 2007 conference proceedings, PDF) . ...

... 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 . ...

... Mokhovaya st., 11, Moscow, 103907, Russia. ... Proceedings of the 6th IEEE International Specialist Workshop on Nonlinear Dynamics of Electronic Systems, Budapest, Hungary, 16-18 July, 1998 , pp. ... The method for synchronization of drive-response systems on conditions of a large mismatch of parameters is considered on example of the system based on modified Chua's circuit. The approach to information transmission using such method is proposed. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The interface between the lower solar atmosphere where energy is generated by subsurface convection and the corona comprises the chromosphere, which is dominated by jet-like, dynamic structures, called mottles when found in quiet regions, fibrils when found in active regions and spicules when observed at the solar limb. ... In addition, how they affect the coronal heating and solar wind need to be further explored. ...