Session 9 - The Hubble Deep Field. ... The Hubble Deep Field (HDF) experiment is a unique project to explore at unprecedented depth and angular resolution the faintest and most distant galaxies. ... This allows study of broad-band spectral energy distribution, morphology and number count statistics for galaxies that span the largest, if not the whole, time interval of galaxy history. ... Here we present preliminary number counts, color-magnitude and color-color diagrams for the 4 HDF frames. ...

... Such a limit may be difficult or impossible to achieve by use of the expression parameter. ... radiusup: sources are ordered in order of increasing radius (see subsection 3.5 ). radiusdown: sources are ordered in order of decreasing radius (see subsection 3.5 ). rownumber: sources are ordered in order of increasing row number in the source table. expr: for this value, the task looks in parameter ncutsortexpression for an expression involving column names. ...

This document describes how number input can be given to tasks which request numbers from Hermes. ... list selection The following constants are implemented: pi 3.14159.... c speed of light (SI) h Planck (SI) k Boltzmann (SI) g gravitation (SI) s Stefan-Boltzman (SI) m mass of sun (SI) p parsec (SI) BLANK Universal undefined value The following mathematical functions are implemented: abs(x) absolute value of x sqrt(x) square root of x sin(x) sine of x asin(x) inverse sine ...

Hide Zen home . ... Extent is a shortest and non-nested sequence of words, which satisfy a query . ... We don't consider normalization of document weight to 1, since we have no global information about document collection. w{i}, len{i} - weight and length of i-th extent . ... Next - the number of unique extents. freq{i} - frequency of i-th extent . We could consider strict and soft uniqueness of an extent, depending on how do we consider the order of words in extent. ... 2 - document length . ...

... Kashyap, V., Drake, J., Smith, R., & Wargelin, B., 2014, 15 Years of Science with Chandra Symposium, Spectrum Ultimum Capellae: XV Years of Chandra Observations of Capella . ... Kashyap, V.L., Connors, A., Drake, J., Lee, T., Posson-Brown, J., Saar, S., Scargle, J., van Dyk, D., & Wong, R., 2014, AAS/HEAD 14, 119.05 TANAGRA: Timing Analysis of Grating Data . ... Audard, M., G del, M., Drake, J.J., & Kashyap, V.L., 2000, ApJ, 541, 396 . Audard, M., G del, M., & Guinan, E.F., 1999, ApJ, 513, L53 . ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Projects . Asteroid . 2/3-m Telescope . ... Irvin M. Winer . ... Site . ... Science . ... Winer . ... Site Map . ... Winer Observatory began Project ASTEROID in 2004 to build a 2-m class telescope for Near Earth Object science and follow-up astrometry (tracking) and education and public outreach. ... Sonoita . Arizona 85637-0797 . ... 2013 Winer Observatory. ...

... The absolute magnitude of the RCBs in the LMC and the small number of Galactic RCBs implies that they are very rare stars. Together with statistics for related stars, the total number of hydrogen-deficient stars in the Galaxy is estimated to be about 1000. Whilst the luminosity of RCBs is similar to that of other low-mass stars as they evolve rapidly from the asymptotic RED GIANT branch to become WHITE DWARFS , their frequency is much lower. ...

All the objects in the database, galaxies, stars, clusters, ..., are indexed with their pgc number. Historically, the pgc numbering was created to unify the names of the galaxies when the database project started in 1983. ... Still, all the objects in the database (about 5 millions) have a pgc number which is used as a unique identification across the different tables. This number should not be used to build a name , since it would not be recognized by any database, including HyperLeda. ...

General Forum Message . Forums: . ... The Telescope's F/number . ... The f/number (focal ratio) of any telescope tells two things about the telescope and that is it's intended purpose and it's photographic performance. The brightness of a star depends on the telescope's aperture not the telescope's f/number. ... The f/number of any objective lens or a mirror of a telescope has nothing to do with the visual brightness of an image, the bigger the aperture the better. ... www.astronomy.net . ...

... Simulation Images . Simulations of convection in stars . Mach-numbers in a simulation of convection inтАж . ... Title: Mach-numbers in a simulation of convection in the sub-giant Eta Boo . Description: The mach-number is the local speed in units of the local sound speed, with values above 1 being super-sonic. ... Mach-numbers in a simulation of convection in the sub-giant Eta Boo The mach-number is the local speed in units of the local sound speed, with values above 1 being super-sonic. ...

... September 02, 2009 - Solar activity hits a new low . The Sun has come all of one day away from breaking its record for the longest period of inactivity for the last decade - reaching a mid-summer low and falling into yet another state of 'hibernation'. ... Astrophysicists had to wait almost two months for this event: the group of sunspots occupying the last line of the catalogue (number 1024), vanished from the solar disk on 11 July this year. ... Solar activity hits a new low . ...

... Peter B. Mozhaev , Ph.D. Complicated crystal structure and anisotropy of physical properties of the high critical temperature superconductors (HTSC) makes difficult reproducible fabrication of the multilayered epitaxial heterostructures of HTSC with necessary parameters. ... The goal of this project is study of growth and formation of the multilayer epitaxial heterostructures of HTSC of the ReBa 2 Cu 3 O x family (ReBCO, where Re is the rare earth element). ...

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. ...

На главную страницу НМУ Задачи для подготовки к экзамену (Problems for students wishing to pass examination) . ... 10K) . ... Задачи о многообразиях с одной очевидной двойной точкой (Problems on varieties with one apparent double point) . ... Задачи о квадриках и грассмановых многообразиях (Problems on quadrics and grassmannians) . ... Задачи о конгруэнциях прямых в трехмерном проективном пространстве (Problems on congruences of lines in the three-dimensional projective space) . ... Russian (46K) | ...

... The study of the Large-scale structure of the Universe and measurements of the Dark Energy equation of state; The exploration of the growth and cosmological evolution of supermassive Black holes in the Universe. ... In course of the all sky survey SRG will discover about 100 000 galaxy clusters and 3 million AGNs. Galaxy clusters are the largest gravitationally bounded objects in the Universe and are best explored through the study of X-ray emission from the hot intergalactic gas. ... 2016 IKI RAN ...

... The first step to improve the FORS calibration is therefore to obtain data to allow a computation of the illumination correction across the field. ... Another limitation on the calibration accuracy has been the brightness of the Landolt standards which have forced the use of extremely short exposures introducing small but non-negligible shutter-time errors and also resulting in a very small number of useful standards per frame. ...

Since 1994, the Astronomical Society of the Pacific's (ASP) highly successful national Project ASTRO? program has been providing opportunities for professional and amateur astronomers to contribute to science education in their local communities. ... The original "classic" Project ASTRO educator-astronomer partners found tremendous interest in what they were doing among the families of their students, and thus Family ASTRO was born to continue at home what was begun in the classroom. ...

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. ...

... Telescope concept . ... The Submillimetron Project is dedicated to astronomical studies at the submillimeter and far infrared wavelengths using a cryogenic telescope located on the Russian segment of the International Space Station (ISS). The Astro Space Center of the Lebedev Institute of the Russian Academy of Sciences is responsible for developing the Submillimetron Project. ... Currently, the Astro Space Center is carrying out a pre-Project study under contract with the Russian Space Agency. ...