... NGC 4755: A Jewel Box of Stars . ... Credit Copyright: Michael Bessell ( RSAA, ANU ), MSO Explanation: The great variety of star colors in this open cluster underlie its name: The Jewel Box . ... Open clusters are younger, contain few stars, and contain a much higher fraction of blue stars than do globular clusters. ... Publications with keywords: open cluster - NGC 4755 . Publications with words: open cluster - NGC 4755 . ... M7: Open Star Cluster in Scorpius . ... M6: The Butterfly Cluster . ...

... 2010 August 17 . NGC 4755: A Jewel Box of Stars . ... Explanation: The great variety of star colors in this open cluster underlies its name: The Jewel Box . ... This Jewel Box lies about 6,400 light-years away, so the light that we see today was emitted from the cluster before even the Great Pyramids in Egypt were built. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . NASA Web Privacy Policy and Important Notices . A service of: ASD at NASA / GSFC . ...

Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

home publications > mercury . ... Big Clusters, Tiny Galaxies . ... Astronomers struggle to understand why giant star clusters form in the tiniest of galaxies . ... These clusters are probably young versions of globular clusters, but they are commonly called super star clusters. Seven dwarf galaxies within 16 million light-years have formed super star clusters, with one of these galaxies, NGC 1569, possessing two young clusters. ... Super star clusters have a lot to tell us about star formation. ...

THE SUBSYSTEMS OF THE MILKY WAY HALO. ... A catalogue of homogeneous fundamental astrophysical parameters for 145 globular clusters is composed on the base of the data of compilative catalogue by Harris (1997) and from another literature. ... In addition, it has large rotation velocity ( V rot =77?33 km/s), appreciable radial and vertical metallicity gradients equal by value, and has the oldest average age (subsystem of the old halo). ... Characteristic parameter of globular cluster subsystems. ...

... Astrophysics Group . ... AMI Publications . ... AMI Consortium: Hurley-Walker N. et al., 2011, preprint (arXiv:1103.0947) . ... AMI Consortium: Olamaie M. et al., 2010, preprint (arXiv:1012.4996) . ... AMI Consortium: Shimwell T. W. et al., 2010, preprint (arXiv:1012.4441) . ... AMI Consortium: Davies et al., 2010, preprint (arXiv:1012.3659) . ... AMI Consortium: Franzen et al., 2010, preprint (arXiv:1012.3711) . ... AMI Consortium: Rodriguez-Gonzalvez C. et al., 2010, preprint (arXiv:1011.0325) . ...

GALAXIES cenA .tiff 40 Bright Radio Galaxy M31.tiff Nikon Andromeda Galaxy (note HII regions in spiral arms) ngc6744.tiff 40 NGC 6744 a face-on spiral clouds_20d.tiff H'blad The Magellanic Clouds our nearest neighbours Lmc_7.tiff Nikon The Large Magellanic Clouds Lmc_zoom.tiff Nikon Detail of previous image smc_7.tiff Nikon The Small Magellanic Clouds smc-zoom.tiff Nikon Detail of previous image 30dor_40_BVR.tiff 40 The 30 Dor ... B [OIII] Halpha trifid.tiff 40" The Trifid Nebula. ...

... GOODS unites extremely deep observations from NASA's Great Observatories, Spitzer , Hubble , and Chandra , ESA's Herschel and XMM-Newton , and from the most powerful ground-based facilities, to survey the distant universe to the faintest flux limits across the electromagnetic spectrum. ... The space-based observations are complemented by ground-based imaging and spectroscopy, including extensive commitments of ESO and NOAO observing time. ... 2010-04-10: Deep VLA 1.4 GHz data for GOODS-North . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... A tale of two clusters . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... 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...

... 2000 August 4 . M15: Dense Globular Star Cluster . ... In fact, only 40,000 light-years away in the constellation Pegasus, M15 is one of the most densely packed globular star clusters in our Milky Way Galaxy. This stunning Hubble Space Telescope image of M15 shows thousands of individual stars across the central 10 or so light-years of the cluster, also cataloged as NGC 7078. ... Globular star clusters harbor from a hundred thousand up to a million stars and roam the Milky Way halo. ...

... 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. ...

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

... ISC Kosmotras . ... Comments, Opinions Publications Dnepr Program . Dnepr launch record 17 August 2011. ... Launch of Dnepr LV carrying Sich-2 and BPA-2 (State Space Agency of Ukraine), Nigeriasat-2 and Nigeriasat-X (SSTL, Great Britain), RASAT (Space Research Technology Institute of Turkey (TUBITAK UZAY)), EDUSAT (La Sapienza University of Rome, Italy), and Aprizesat-5 and Aprizesat-6 (SpaceQuest, USA) payloads is scheduled for 17 August 2011, at 10:12:20 decreed Moscow time (7:12:20 UTC). ...

Schuberth, Y., Richtler, T., Dirsch, B., Hilker, H., Larsen, S.S., Kissler-Patig, M., Mebold, U. 2006, A , 459, 391-406; Dynamics of the NGC 4636 Globular Cluster System - An extremely dark matter dominated galaxy? ... Hilker M., Mieske S., Infante L., 2003, A 397, L9; Faint dwarf spheroidals in the Fornax Cluster: A flat luminosity function (as a gzipped .ps file [946kB]; PDF version [1.8MB]) . ... Hilker M., Infante L., Richtler T., 1999, A 138, 55; The central region of the Fornax cluster - III. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... We have used ACS imaging to study the sizes of globular clusters around the early type galaxy NGC 4278. ...

Valentina Klochkova . Klochkova V.G. 21 Jan 08:14:27 GMT+0300 2016

... In 1930, Trumpler noticed that linear diameters (LD) of open clusters increase with distance (D) from the Sun. ... Since that time, the interstellar absorption has become one of the best studied factor in astrophysics, and we may hope that current OCL distance scales are free from this LD-D correlation. To verify if this is the case we have chosen several modern OCL distance scales and test them with the same clusters and the same angular diameters that Trumpler had used back in 1930. ...

... Messier 13 Great Globular Cluster in Hercules (M13) - шаровое скопление NGC 6205 (Melotte 150) в созвездии Геркулес (Hercules) .. ... Просмотр полной версии : Messier 13 Great Globular Cluster in Hercules (M13) - шаровое скопление NGC 6205 (Melotte 150) в созвездии Геркулес (Hercules) .. ... Messier 13 Great Globular Cluster in Hercules (M13) - шаровое скопление NGC 6205 (Melotte 150) в созвездии Геркулес (Hercules (http://www.starlab.ru/showpost.php?p=480881&postcount=1)) .. ... Messier 13 (M13) .:...

... About me . ... Prof. Petko Nedialkov Area of Study : Astronomy Astrophysics MSc in Astronomy and Astrophysics , University of Sofia, Bulgaria ( 2009 - 2010 ) Thesis Topic: Photometric study of the open cluster NGC 957 Supervisor: Head Assistant Prof. Evgeni P. Ovcharov Area of Study : Astronomy Astrophysics Employment: Dates: 01.02. 2010 - present Bulgarian Academy of Sciences, Institute of Last update: Saturday, October 9, 2010 . ...