... Kalirai and Harvey Richer of the University of British Columbia led the study, which began as an investigation of a globular star cluster in the Milky Way galaxy known as NGC 6397. ... Within the population of stars and galaxies behind NGC 6397, the Hubble image revealed a large elliptical galaxy that contains several hundred globular clusters. ... In fact, a single giant star in NGC 6397 appears 10 million times brighter than one of the distant globular clusters. ...

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

... Mars and the Star Clusters . ... Explanation: This evening's skyscape includes a view similar to this one , recorded in western skies on April 16 - an orange-hued planet Mars wandering near rich open star cluster M35 . Also notable is fainter star cluster NGC 2158 , just above and left of M35. ... But the stars of NGC 2158 are much older, and that cluster's light is definitely dominated by the orange glow of cool giant stars, making an interesting visual comparison to ruddy-colored Mars. ...

... Virgo Cluster Galaxies . ... Pictured are several galaxies of the Virgo Cluster, the closest cluster of galaxies to the Milky Way. ... Blue Jet Lightning . ... These atmospheric discharges occur very high in the Earth's atmosphere - much higher than the familiar form of lightning. ... M104: The Sombrero Galaxy . ... The prominent dust lane and halo of stars and globular clusters give this galaxy its name. ... Low density gas is shown as blue, and high density gas as red. Eagle EGGs in M16 . ...

Main Program Travel Where to go in Moscow Information . ... The 2014 year marks the 100th anniversary of Yakov Zeldovich . ... John Carlstrom (University of Chicago) . ... Lyman Page (Princeton University) . ... The conference will be held at the Space Research Institute (IKI) in Moscow, Russia, on June 16-20, 2014 . ... International Conference: Cosmology and High Energy Astrophysics (Zeldovich-90) 20-24 Dec 2004, Moscow, Russia . ... 2014 Space Research Institute, Moscow Русская версия ...

... Cataclysmic Variables . ... The main aim of this survey is to discover new stellar binary systems with orbital periods less than ~80 min. ... The intensity of stellar objects can vary on a wide range of time-scales, ranging from seconds to months to years. ... Most of these surveys are sensitive to timescales longer than a day. ... For instance, the 0.3 deg x 0.3 deg survey using the Canada France Hawaii Telescope was sensitive to variations on timescales as short as ~8 min (Lott et al 2002) . ...

... Classes . Files . ... casa . ... National Radio Astronomy Observatory 00023 //# 520 Edgemont Road 00024 //# Charlottesville, VA 22903-2475 USA 00025 //# 00026 //# $Id: Containers.h 20551 2009-03-25 00:11:33Z Malte.Marquarding $ 00027 00028 #ifndef CASA _ CONTAINERS _H 00029 #define CASA _ CONTAINERS _H 00030 00031 # include casa / Containers /Block.h 00032 # include casa / Containers /Link.h 00033 # include casa / ... Generated on Fri Sep 3 2010 13:06:54 for casacore by 1.7.1 ...

... 87.1083Owen+ VIII/29 1400-MHz Survey of 1478 Abell Clusters of Galaxies (Owen+ 1982) ================================================================================ A 1400-MHz Survey of 1478 Abell Clusters of Galaxies Owen F.N., White R.A., Hilldrup K.C., Hanisch R.J. =1982AJ.. ... 0,] Major axis error 70- 71 A2 --- n_MajAxi *[ A, B, C,NR, ] Major axis note 73- 74 I2 arcmin MinAxi *? ... Note on dist-C: Ratio of the distance of the source from the cluster center to the corrected Abell cluster...

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

ABSOLUTE PROPER MOTIONS OF 331 OPEN CLUSTERS . ... The proper motions of stars in the fields of 331 open clusters were taken from Four-Million Star Catalog (4M-catalog) of positions and proper motions (Volchkov et al. ... The absolute proper motions for 21 young open clusters have been derived by comparison of precise relative proper motions of individual stars and their corresponding absolute proper motions. ... Sign of proper motions in RA . ... 0.0001 arcsec/yr . ... rms error in RA proper motion . ...

Full-Simulation Calorimeter Study For Energy Flow Jet reconstruction Jan. ... Good Jet reconstruction is essential Jet Reconstruction .. Energy Flow method We use Tracker for charged particles Calorimeters neutral particles For example, in e+e- !tt (6jets,4jets) events, Charged particles carry ~60% of event energy ! ... I'll report Clustering algorithm GISMO vs GEANT4 Photon reconstruction study In this study, we use e+e- ! ... 0.9) Average # of clusters in a particle .. ...

... Research . ... I aim to understand the variety of processes that have driven galaxy formation and mass assembly across cosmological history via the resolved (star-by-star) study of nearby systems - in particular the Milky Way and Andromeda (especially their stellar halos and globular cluster populations), the Magellanic Clouds, and the myriad of smaller dwarfs that inhabit the "Local Group".б  . ... Globular clusters are fascinating objects in their own right. ...

... Tiny Tim has been used for generating Hubble Space Telescope ( HST ) point-spread functions (PSFs) for deconvolution, algorithm testing, proposal planning, and optical studies. ... Tiny Tim is a stand-alone program for simulating HST PSFs as viewed with the on-board imaging cameras (WF/PC-1, WFPC2, FOC, COSTAR/FOC). ... The measured aberrations for FOC f/96, WF/PC-1 PC6, WFPC2, and COSTAR/FOC are used by Tiny Tim . ... Figure: FOC f/96 observed and Tiny Tim model PSFs (pre-COSTAR) at 253 nm. ...

... Bringing news from across the Universe to children all around the world . ... It contains billions of awesome objects including planets, dust clouds, galaxies and star clusters like the one in this photograph. ... Charles Messier s life dream was to become famous. To do this, he needed to discover a comet. ... So he decided to save himself some time and each time he found an object that didn t move across the sky (as comets do), he noted it down. ...

... Star Atlas . ... Nearby star cluster discovered to be useful in studies of Sun and search for Earth-like planets . For the first time, scientists have a useful laboratory in which to search for and study bright stars of similar mass and age to the Sun. ... Eventually, it is going to let us find and study nearby stars with a mass like the Sun's to help in the hunt for Earth-like planets and to test and improve the models astronomers use to understand the evolution of stars, including our own Sun." ...

... Galileo was one of the first to study our Milky Way with a telescope in 1610 and he discovered that it was composed of a huge number of faint stars. ... Image Credit: NASA Elliptical Galaxy This image from NASA's Hubble Space Telescope shows a good example of an elliptical galaxy at the centre of a galaxy cluster that is over 450 million light-years away in the direction of the constellation Centaurus. ... Then the Andromeda galaxy was first classed as a galaxy outside of our own Milky Way. ...

... Archives . ... my first AAS. ... I was questioned by two attendees, acquainted before the AAS, if I can suggest them clustering methods relevant to their projects. ... classification vs. clustering or supervised learning vs. unsupervised learning : the former terms from the pairs indicate the fact that the scientist already knows types of objects in his hands. ... Tags: Classification , clustering , cosmology , spatial statistics , supervised learning , test , unsupervised learning . ...

... Structure of Data . ... Catalog . ... In SAI OCL Catalog, we introduce our work on investigation of the Milky Way system of open star clusters. The main goal of our study is a search for new clusters using huge surveys. 168 new clusters have been already discovered by us using J,H,Ks data from 2MASS point source catalog. ... For 141 new clusters, we found their physical parameters using J,H,Ks data from 2MASS catalog and, for a number of clusters, our UBVRI CCD observational magnitudes. ...

... Dept. for Physics of Stars&Galaxies . ... Using a database view Sloan Digital Sky Survey (SDSS), containing almost a million spectra created 15,000 sample galaxies with active star formation, which is used for various studies and physical state of evolution of galaxies. ... Star clusters of the Galaxy . The project MWSC (Milky Way Star Clusters) directory using 2MASS, which includes nearly 500 million vision to the limit Ks = 15.3, analyzed more than 4,000 cluster-like objects in the galaxy. ...

In the early 1980s, our understanding of binary star evolution allowed us to construct a general evolutionary scenario which successfully explained the genesis of well-studied normal stars and offered potential explanation for new X-ray sources discovered in space experiments. ... At the present time it allows you to obtain evolutionary track of the close binary system with different parameters, which you determine yourself. ... To build your own track follow "Go to evolutionary track constructor". ...