.

... 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. ...

. Next: Some statistical trends and Up: Spectral survey of Case Previous: Quasar CG 273 . љ . Some statistical trends and distributions . Sky and redshift distribution . Accuracy of data, comparison with independent measurements . root . 1/10/1998

... A homogeneous chemical analysis of the inner Galactic disk from the first data release of Gaia-ESO . ... Gaia-ESO is a public spectroscopic survey designed with this goal in mind. ... These first results highlight the potential of the Gaia-ESO survey to explore areas of the Milky Way still poorly studied, such as the inner disk, and to give new constraints on Galactic chemical evolution models. ... Map of observed targets of the first data release of the Gaia-ESO Survey. ...

... Archives . ... Astronomers confront with various censored and truncated data. ... This area is called survival analysis . If your library has The American Statistician subscription and you are an astronomer handles censored or truncated data sets, this primer would be useful for briefly conceptualizing statistics jargon in survival analysis and for characterizing uncertainties residing in your data. Survival Analysis: A Primer by David A. Freedman . ... Chandra Blog . ... SAMSI AstroStat Prog. ...

... Archive 2003: . From RATAN-600 observations with a matrix radiometer at a wavelength of 1 cm indications have been found of existence of relativistic electrons in the magnetosphere of Jupiter with energy of about 100 MeV, which demands revision of mechanisms of acceleration of cosmic rays of the solar wind with energy of a few MeV. ... Archive . ...

... Samples of expected results from an intensive search for planets about stars acting as gravitational lenses (lens stars) of galactic bulge stars (source stars) during microlensing events are constructed. ... The Gould and Loeb (1992) detection probabilities are scaled to arbitrary planetary mass and mean lens distance and averaged over the lens mass function. ... The expected total number of planets detected depends entirely on the assumptions about the nature of the planetary systems being sought. ...

As in the last years, the Ephemerides of Minor Planets for 2015 are prepared by the IAA RAS only in the electronic form. ... Orbital elements of all numbered planets have been determined in IAA all over again on the ground of available observations in the catalog of the Minor Planet Center. ... More detailed information on orbital elements used in the present volume of EMP and their accuracy is given in section "Information on new orbital elements". ... a) information on new orbital elements; . ...

Next: SMUDGES Up: Minutes of the 1st Previous: Pilot Survey . ... The Jodrell Virgo survey is part of HIJASS and encompasses 4 X 8 degrees, fully sampled. ... This indicates that we should perhaps survey the outskirts of the cluster to look for low mass clouds. In the survey, objects were detected using a combination of by-eye method and automated routine. 28 detections of well known galaxies . ... Velocity distribution suggests infall or extension along the line of sight. ... Jon . ...

Microsymposium 38, MS083, 2003 (A4 format) MERCURY: LOCAL VARIATIONS OF THE PHOTOMETRIC RELIEF. ... Because of trajectory and pointing angle constraints the planet could be observed from Mariner 10 only over a small range of phase angles between about 75o and 110o. Therefore the photometric investigations are restricted to measuring the distribution of brightness on the Mercurian disk. ... Raw versions of real-time processing pictures FDS 0000984 and FDS 0000986 were used (images 196 and 202). ...

... Space-time distribution of matter at the epoch Z=0.4--3.5 by analysis of absorbtion systems in QSO spectra" . A statistical analysis of distributions of C IV and Mg II absorption-line systems observed in QSO spectra within the cosmological redshift interval Z abs =0.2-3.2 is presented. ... The isotropy (or anisotropy) of the distribution is verified by comparing of independent distributions of the absorption systems in opposite hemispheres with their various orientations. ...

N-BODY SIMULATIONS OF PLANET FORMATION: VARYING THE NUMBER OF PLANETARY EMBRYOS J.E. CHAMBERS Armagh Observatory, College Hill, Armagh, Northern Ireland, BT61 9DG, UK. ... These gained mass until they became large enough to gravitationally per- turb other objects in the nebula. ... Their simulations started with a few tens of planetary embryos, moving on circular nearly-coplanar orbits in the region now occupied by the terrestrial planets. ... Rev. Earth Planet. ... 4 J.E. CHAMBERS Figure 2. ...

Detecting Long Period Planets with WASP 1 University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL To estimate the number of transiting planets in this period range, planetary occurrence rates from Kepler (Fressin et al, 2013) for varying spectral type & planet type were used. ... Two `stare' fields are currently available from 2011 (330,000 stars) producing a detection rate of 3.0±2.4 planets (Fig 4). ... Since 2011, WASP-N cameras have observed in `Stare' mode, with cadence of ~1-2min. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Space Flight . ... Search Results for ?stellar nursery? Posted on January 23, 2012 | 1 Comment The Universe is 13.75 billion years old.It is easy to say, but what does that mean in Earthly terms?Let?s squeeze the whole history of the Universe into a year! Continue Reading.. ... Posted on May 6, 2011 | ... The Hubble Space Telescope recently imaged NGC 2841 as part of an investigation into how new stars are created. ...

Neutral hydrogen distribution in the region of radio source Cygnus X . ... HI distribution in the region of radio source Cygnus X and supernova remnant G78.2+2.1 has been investigated from observations in 21 cm radio line using radio telescope RATAN-600. ... The existance of the large HI shell and a cavity in molecular gas distribution around Cygnus X indicates this radio source most probably to represent a united structure and whole gas may be drived by stellar wind of Cyg OB2 stellar assotiation. ...

... Radio Catalog . The corrections in NVSS fluxes leading to the corrected Version 1.1 also result in changes to some of the figures and tables in Kimball Ivezi? ... The results are qualitatively the same. ... The new versions of the figures, along with the original versions (in high resolution), are available here . ... These figures, along with Table 4, continue to motivate t = 0.35 as the optimal separator between "simple" and "complex" sources). ... Complex Sources . ... t NVSS . ... galaxy . ...

... During all period of our investigations Dr. N.Sumzina from the Institute of Applied Astronomy of RAS had prepared the Numbered Minor Planet positions from MPC Database for our processing with kind permission of the Director of Minor Planet Center Prof. Braian Marsden. ... Our extensive processing of the MPC data allows us to conclude that CCD observations of the Numbered and Unnumbered Minor Planets have the errors, sometimes very crude. ...

... Watchouts . ... It associates incorrect energies with line features below 1 keV by shifting them to lower energies and applying too much redistribution. Fig.1 compares the SASv6.0 result (red curve) with the SASv5.4 result (black curve) for a 0.8 keV line feature. ... Currently SAS 6.0 leads to obviously very bad fits at low energies, while the MOS-timing canned-response produces fits in excellent agreement with MOS small-window mode down to 100 eV (as shown in Fig.2). ...

... ROTATION CURVE: When studying spiral galaxies it is invariably found that the stellar rotational velocity in the disk remains constant, or "flat", with increasing distance away from the galactic center. ... The rotation speed of the stars in galaxies is found NOT to decrease with increasing distance from the galactic center (see emission lines in the spectrum), implying that the overall mass distribution of the galaxy is different from the light distribution. ...

New reduction of minor planets photographic plates obtained with Pulkovo Normal Astrograph A.A. Berezhnoy Pulkovo Observatory of RAS, Saint-Petersburg, Russia Minor Planet observations at Pulkovo Periodical observations of 14 bright asteroids named Selected Minor Planets (SMP) were performed at Pulkovo since 1948 within the international framework started by works of B.V. Numerov and D. Brouwer. ... 108 133 113 74 124 67 97 88 14 84 64 5 20 19 Epochs (YYYY.MM) 1200 Mean values of total obs. ...