... The plane of our Milky Way Galaxy runs through this complex and beautiful skyscape. At the northwestern edge of the constellation Vela (the Sails) the four frame mosaic is over 10 degrees wide, centered on the glowing filaments of the Vela Supernova Remnant, the expanding debris cloud from the death explosion of a massive star. Cepheus: Trunk to Bubble . ... Young suns still lie within dusty NGC 7129, some 3,000 light-years away toward the royal constellation Cepheus. ... The Bubble Nebula . ...

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• NGC 1850: Gas Clouds and Star Clusters

... We sometimes use the word "nebula" to refer to galaxies, various types of star clusters and various kinds of interstellar dust/gas clouds. ... Early in this century, there was a great debate as to the nature of the nebulae like this one which at that time could not be resolved into individual stars. ... A typical galaxy is 100,000 light-years in diameter. ... M 42 shown) Reflection nebulae are clouds of dust which are simply reflecting the light of a nearby star or stars. ... M 1 shown) . ...

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• Отдел Изучения Галактики и переменных звезд
• APOD: 2000 December 24 - NGC 1850: Gas Clouds and Star Clusters
• APOD: March 29, 1999 - NGC 1850: Gas Clouds and Star Clusters

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. ...

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• Dougal Mackey - Research
• GSAOI Super Star Clusters Science Page

We investigate dust production and stellar mass loss in the Galactic globular cluster NGC 362. ... We detect several cluster members near the tip of the red giant branch (RGB) that exhibit infrared excesses indicative of circumstellar dust and find that dust is not present in measurable quantities in stars below the tip of the RGB. ... The two most extreme stars, variables V2 and V16, contribute up to 45% of the total cluster dust-traced mass loss. ...

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• The Influence of Supernova Remnants on the Interstellar Medium in the Large
• Target Category and Target Description [Description]
• HST Press Releases

Physics of the outer atmosphere of the Sun and of stars along their evolutionary track . ... 2002, Mem. SAIt, in press (Proceedings XLVI Congresso Nazionale SAIT) . ... Star formation in the Vela Molecular Clouds V. Young stellar objects and star clusters towards the C-cloud . ... 2002, ApJ, in press . ... 2002, proceedings of the SFCHEM 2002 meeting "Chemistry as a Diagnostic of Star Formation", Waterloo, Canada . ... D.S. Shepherd, L. Testi, D.P. Stark . ... Star Formation Group . ...

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• APOD: 2000 January 4 - Galaxies Cluster Toward the Great Attractor
• Ronbun (Abstract)

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 . ...

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• Astronomy HyperText Book: Stellar Clusters
• QSO Absorption Lines and Other Cosmological Probes

Supernova 2002bu in NGC 4242 . This page is devoted to information on Supernova 2002bu in NGC 4242 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. This is a type IIn supernova found in a galaxy which is in Canes Venatici. ... Mag . ... 2002/03/28.26 . ... A Leroy image . ... SUPERNOVA 2002bu IN NGC 4242 . ...

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• Supernova 1999gi in NGC 3184

... We address a question if globular clusters (GC) in a protogalaxy could for some time evolve chemically as isolated systems, enriching themselves with heavy elements produced in first supernova events that follow initial star formation. We determine both the critical mass of a protoglobular cluster that is needed to retain the ejecta of the very first supernova, and the critical energy (i.e., number of supernovae) that is needed to expel the residual gas from a cluster of a given mass. ...

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• Home page of Dmitri Wiebe

ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Astrophysics graduate student programs . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... The Australia Telescope National Facility Colloquium . ... The mass spectrum scales as N(M) ~ M^-1.5, similar to the mass spectra of young massive star clusters suggesting that individual molecular clouds are transformed in the starburst into individual star clusters. ...

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• ATNF Daily Astronomy Picture
• A supernova remnant in the Small Magellanic Cloud
• ATNF_publications

... 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 . ...

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• The AstroStat Slog Globular Clusters
• The AstroStat Slog clustering
• Chandra Images for G007.5-01.7

One of the goals of ALFALFA (the Arecibo Legacy Fast ALFA Survey) is that of verifying whether a significant population of optically faint, baryon rich, low mass systems exists. ... ALFALFA has easily detected the cloud VIRGOHI 21, reported by Davies et al. ... The clouds in the complex appear not to be gravitationally bound to one other, and may represent the remnant of an ancient episode of harassment. ... Davies, J., Minchin, R., Sabatini, S., van Driel, W., Baes, M. et al. ...

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• Pulsar Highlights - A Dozen new MSPs in Globular Clusters
• GOLDMiNe: Virgo cluster optical and HI databases
• The Pleiades

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... Although they look tranquil here, observed up close such young stars would seethe and glare violently. ... Once thought to be a satellite of our own galaxy, increasingly the Small Magellanic Cloud is believed to be an interloper from the intergalactic void which has wandered into its present location and will eventually recede away into the darkness. ... Your email address will not be published. ...

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• Other Galaxies | Astronotes
• Hubble shows us a spectacular star cluster | Astronotes
• A Spectacular View of the Lagoon Nebula | Astronotes

... ESO, the European Southern Observatory . ... Green ESO . ... ESO Supernova . ... New and exciting observations at the European Southern Observatory have probed the interstellar space around last year's bright supernova SN 1987A in the Large Magellanic Cloud (LMC) . On images obtained with the ESO 3.6 m telescope in mid-February 1988, light echoes [1] have been unambiguously detected, which arise from the reflection of the bright supernova light in interstellar clouds surrounding the exploded star. ...

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• The star cluster NGC 2100 in the Large Magellanic Cloud
• Zooming in on the star cluster NGC 2100 in the Large Magellanic Cloud | ESO
• Zooming in on a stellar nursery in Corona Australis | ESO

... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... The Large Magellanic Cloud, open cluster NGC 1664, and reflection nebula NGC 1788 . January 2 9, 2014: The Large Magellanic Cloud in Dorado is an excellent target for far-southern naked-eye observers, open cluster NGC 1664 in Auriga offers small-telescope owners nice views, and large-telescope owners can seek out reflection nebula NGC 1788 in Orion. ... Small telescope : Open cluster NGC 1664 . ...

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• A cluster within a cluster | Astronomy.com
• Cosmic cloud races toward Milky Way | Astronomy.com
• Supernova light echoes discovered | Astronomy.com

... Astrophysics Group . ... AMI Science . ... Observations of galaxy clusters are central to the AMI science programme. The AMI Small Array is used to observe already-known clusters with high-sensitivity and resolution, allowing us to extract detailed information about individual clusters and to build up statistics about the cluster population. ... Observing galaxy clusters at 15 GHz is tricky because of the contamination from foreground radio sources, which is where the Large Array comes in! ...

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• A 215 to 265 GHz spectral line survey of the Sgr B2 molecular cloud
• Supernova Remnant (SNR) Catalogue or Catalog of Galactic SNRs
• Abstract

CONTENTS Volume 22 Number 1 (January 1995) . ... SPECTROSCOPY OF B STARS IN THE SMALL AND LARGE MAGELLANIC CLOUDS . ... THE STRUCTURE OF THE INTERSTELLAR MEDIUM TOWARDS THE GLOBULAR CLUSTER M4 . ... E. R. Houdebine & J. G. Doyle . UBV CCD PHOTOMETRY TOWARDS THE HALO OF M31 . ... A. G. Gunn & J. G. Doyle . ... 1995-1999 Irish Astronomical Journal, Downshay, 12 Heather Lea Avenue, Dore, Sheffield S17 3DJ, S. Yorkshire, United Kingdom WWW Contact: Alastair G Gunn Back to IAJ Home Page ...

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• Armagh Observatory
• C.J. Butler, Research Astronomer
• SELB Schools Cluster Programme Show | International Year of Astronomy - Beyond

This animation shows a galaxy cluster with two mass concentrations (the pink shading indicates the projected mass density) lensing a background field of faint blue galaxies. ... Inside the Einstein ring radius one has radial arcs, and right in the center of the cluster there are demagnified images. The highest magnifications occur at the Einstein ring radius, giving the large tangential arcs. ... Abell 2218 and CL2244-02 are clusters with tangential arcs. ... Tutorial : Part 1 | Part 2 | ...

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• Cluster Analysis
• A 20 cm VLA survey of Abell clusters of galaxies
• A VLA Survey of Rich Clusters of Galaxies III

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

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. F IGURE . 2. The distribution of globular clusters projected onto the XY [(a) and (c)] and YZ [(b) and (d)] planes for metal-rich clusters of the thick disk with [Fe/H] -1.0 [(a) and (b)] and metal-poor clusters of the halo [(c) and (d)]. The closed curves are upper envelopes drawn by eye. Clusters lying far from the central concentrations in the diagrams are outlined and their numbers indicated. discussion in the text | previous figure | next figure .

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• Vladimir Marsakov Abstracts
• Vladimir Marsakov Publication List

... no comet has been observed with an orbit that indicates that it came from interstellar space, . ... From this he proposed that comets reside in a vast cloud at the outer reaches of the solar system. ... Unfortunately, since the individual comets are so small and at such large distances, we have no direct evidence about the Oort Cloud. ... T he Kuiper Belt is a disk-shaped region past the orbit of Neptune roughly 30 to 100 AU from the Sun containing many small icy bodies. ... Small Bodies .. ...

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• The Origin of the Solar System
• Space Research Institute (IKI) Seminar