... A Delta Rocket Launches . ... Barringer Crater on Earth . ... Barringer is over a kilometer across. ... NGC 7789: Galactic Star Cluster . ... NGC 7789 is an open or galactic star cluster about 8,000 light-years distant toward the constellation Cassiopeia and lies near the plane of our Milky Way galaxy. ... Activity on our parent star continues to increase as the sun approaches a maximum in its 11-year solar cycle, expected in the year 2000. ... M80: A Dense Globular Cluster . ... Four Faces of Mars ...

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 . ...

CATS home ] [ Back to CATS list ] Desription file of catalogs including in search . This file decribes the CATS catalogs. ... Radio Sources at 2.7 GHz 11CMBONN 11CMB r 2.7 1990A .. ... 37Edge+ A Survey of radio sources at frequency 159 Mc/s 3CR 3COPT o - 1990PASP.. ... 779Waldram+ The 7C Survey of Radio Sources at 151 MHz 7CG 7CG r 0.151 1998MNRAS.294.. ... 12Mingaliev Khabrakhmanov Spectra Study of a Sample of Radio Sources from the 87GB Catalog 8C 8C r 0.038 1995MNRAS.274.. ...

... 110-114 F5.2 mas/year s_mu_ra Error of RA proper motion 116-120 F5.2 mas/year s_mu_dec Error of Decl proper motion 122-122 I1 --- Src Proper motion source (2) 125-129 F5.2 --- Corr PM errors correlation coefficient 133-138 F6.2 mas Pi HIPPARCOS parallax 140-144 F4.2 mas Pi_err Parallax error 147-152 I6 --- Hip_no HIPPARCOS number ------------------------------------------------------------------------------- Note (1) Sources of radial velocity data: 1 Moscow group measurements (Sov.Astron.Let., ...

... Full version (including all figures and appendices [3.1 MB]) . Reduced version 1 (except german summary and appendices [2.4 MB]) . Reduced version 2 (except german summary, appendices and figures [0.2 MB]) . ... Figures of Chapter 2 (10 figures [1.4 MB]) . ... Chapter 2 ( Photometry of galaxies in selected CCD fields [1.4 MB]) . ... Chapter 6 ( Summary and Future Work [40 kB]) . Chapter 7 ( Zusammenfassung (German summary) [36 kB]) . Appendix A ( The photometric catalog [65 kB]) . ...

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 . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . July 28th marks the 125th anniversary of the erection of the 10-inch Grubb refracting telescope at the Armagh Observatory. ... Dreyer used the telescope extensively over the next thirty years, especially while confirming some of the details of nebulae and star clusters for his venerable NGC catalogue, that is, A New General Catalogue of Nebulae and Clusters of Stars, published in 1888 by the Royal Astronomical Society. ...

... Robert L. Stewart (Brigadier General, USA, Ret.) ... SPECIAL HONORS: Awarded Army Distinguished Service Medal , Defense Superior Service Medal , 2 Legion of Merit, 4 Distinguished Flying Crossed, a Bronze Star, a Meritorious Service Medal , 33 Air Medals, the Army Commendation Medal with Oak Leaf Cluster and V Device, 2 Purple Hearts, the National Defense Service Medal , the Armed Forces Expeditionary Recipient of NASA Space Flight Medal (1984 & 1985). ...

... 1) A Multiwavelength Study of Tadpole Galaxies in the Hubble Ultra Deep Field, Straughn, A., et al. (including S. Ravindranath), 2015, ApJ, 814, 97. 2) The Rate of Core Collapse Supernovae to Redshift 2.5 from CANDELS and CLASH Supernova Surveys, Strolger, L., et al. (including S. Ravindranath), 2015, ApJ, 813, 93. ... 18) "Resolved Galaxies in the Hubble Ultra Deep Field: Star Formation in Disks at High Redshift", Elmegreen, D.M., Elmegreen, B.G., Ravindranath, S., Coe, D.A., 2007, ApJ, 658, 763. ...

... MPIfR activities - GMVA Global mm-VLBI Array ( GMVA ) is doing VLBI at 3mm and 7mm wavelengths Coordinated correlated by the MPIfR Typically two observation sessions per year Phased- ALMA will possibly join GMVA observations starting in cycle-4 ( 2017) MPIfR activities - GMVA Requirement by ALMA : demonstrate that GMVA + ALMA observations can be succesfully correlated Test ...

Astronotes Armagh Planetarium's Stellar Blog! ... Meteors and Meteorites . ... Stars . ... Monthly Sky Notes . ... This famous depiction of the Leonids was based on a first hand account of a meteor storm by a minister, Joseph Harvey Waggoner. ... In the autumn the Great Square of Pegasus is visible in the southern night sky. ... I hope this guide to the November night sky is helpful and have fun star sight-seeing! ... Tweets that mention The Leonid meteors: highlights of the November night sky | ...

The following activities are included in the Universe at Your Fingertips guide. ... Clicking on each activity will take you to a "reviews" page where you can post a review, or read reviews posted by others who have used the activity. ... Activity Online . ... MOON AND PHASES . ... Observing Phases and Features . ... Modeling Moon Phases . ... SUN AND SEASONS . ... Observing the Sun Safely . ... Observing Where the Sun Sets . ... Making Pictures of Motion . ... Morning Star and Evening Star . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. November 11, 1997 . The Annotated Galactic Center . ... Constellations of nearby stars include Sagittarius , Libra , Scorpius , Scutum , and Ophiuchus . ... Open clusters include M6 , M7 , M18 , M21 , M23 , M24 , M25 . Globular clusters include M9 , M22 , M28 , M54 , M69 , M70 . ... About APOD > . ... NASA Technical Rep.: ...

Your First Telescope . Articles | ... Next to "What telescope should I buy?" this is the most common question I usually get asked. ... What you can see depends on a lot of factors, including the type of telescope you bought, the quality of your local seeing conditions, and your level of skill. ... As a result, an experienced observer might enjoy deep sky objects in an 80 mm refractor, while a beginner with a light bucket next door is still struggling to find the Orion Nebula. ...

... Our Milky Way galaxy is host to a number of companions. These companions are gravitationally bound to the Milky Way and are stellar systems in their own right. They include a population of about 150 globular clusters (GCs) and some 30 dwarf satellite galaxies (DSGs). ... These DSGs are more extended and diffuse compared to GCs. In fact the larger satellites of the Milky Way (and other galaxies, for that matter) host their own small systems of GCs. ...

... P2491 Date Received: 2009-Mar-09 11:01:45 Technical Page Proposal Type: General Category : Observation Category : Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 40 Hours 20 A 770-MHz Arecibo pulsar survey of globular clusters The scientific applications of pulsars in globular clusters are plentiful and include the first ever proof of the existence of ionized gas in ...

... Tune into the Asteroid Day press conference . ... Asteroid DayУ?т??т??s Don Yeomans: Will asteroid 2013 TX68 strike Earth? ... Could the Chicxulub asteroid have helped to trigger the volcanic activity in the Deccan Traps 65 million years ago? ... RELATED TOPICS: ASTEROIDS . ... What we do know is that 66 million years ago, an asteroid smashed into modern-day Mexico near the tiny town of Chicxulub. ... Get instant access to subscriber content on Astronomy.com! ...

Proceedings of the Particle Physics and Early Universe Conference (PPEUC). For this paper: postscript PPEUC CMB index 1 Observations.. ... VLA observations at 8.4 GHz of a field within one of the Hubble MDS regions have allowed us to set upper limits on fluctuations in the CMBR on angular scales from down to . ... We interpret it as the Sunyaev--Zel'dovich signal from a high redshift cluster. Interestingly, within about of this decrement, lie two radio-quiet quasars both at . ...

ATMoB "Open Cluster Observing Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston through participation in the Open Clusters Observing Awards program. Introduction: This awards program is oriented towards visually observing open clusters above magnitude 9.9. ... It turns out that a very unprejudiced and convenient method to dermine the limiting magnitude is to count the number of visible stars in certain areas on the sky. ...

. уВµуГЪуГ®уВµVLBIуГЧуГнуВ¦уВзуВпуГИ я®П Space VLBI Project . VSOPшиИчФЁя®ИуБпуВЛуБЛя®Й . я®П VSOP Project (1997-2005) . VSOP-2шиИчФЁя®ИASTRO-Gя®Ъф¦нцнвя®Й . я®П VSOP-2 Project (terminated) . хоЗхоЩчзСхнжчаФчйґцЙА я­Ь ISAS . хоЗхоЩшИкчйЎчаФчйґщЦЛчЩЎцйЯцзЛ я­Ь JAXA . Copyright 2006 Radio Astronomy Group .