... GSAOI Home . ... Science . ... Deep imaging at J , H , and K is required to identify all stellar objects, brown dwarfs, and planetary mass objects in the central region of the Orion Nebula Cluster down to masses comparable to that of Jupiter. This is required to establish the initial mass function, i.e., the number of stars of each mass that have formed, in this region of intense massive star formation. ... The fields of the GSAOI detectors are shown as four green squares in each frame. ...

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... Cluster and Starforming Region Westerlund 2 . ... Credit Copyright: NASA , ESA , the Hubble Heritage Team . ... The cluster's dense concentration of luminous, massive stars is about 10 light-years across . Strong winds and radiation from those massive young stars have sculpted and shaped the region's gas and dust, into starforming pillars that point back to the central cluster. ... April . ... April 2015 . ... NGC 3293: A Bright Young Star Cluster . ... Globular Star Cluster NGC 6752 . ...

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• XWare > APOD

... 2015 April 25 . Cluster and Starforming Region Westerlund 2 . Image Credit Copyright : NASA , ESA , the Hubble Heritage Team . ... Explanation: Located 20,000 light-years away in the constellation Carina, the young cluster and starforming region Westerlund 2 fills this cosmic scene . ... Strong winds and radiation from those massive young stars have sculpted and shaped the region's gas and dust, into starforming pillars that point back to the central cluster. ... About APOD | ...

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• APOD: 2006 August 10 - Galactic Center Star Clusters
• APOD: November 1, 1995 - M16: Dust and an Open Cluster
• APOD: 2002 July 17 - Star-Forming Region RCW38 from 2MASS

There is often dust associated with ionized regions. Compact HII regions usually have associated dust from a molecular cloud in which the massive star is being "born". ... For such stars the dust is not produced by the star, and a variety of dust features are observed. The planetary nebulae also usually have associated dust from the previous stage of evolution where they were either carbon stars or M-type giants. ... The feature near 11.5 microns in the IC 418 spectrum may be due to SiC dust. ...

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• Spitzer Observations of the Supergiant Shell Region in IC 2574
• Warm and Dense Molecular Gas in the N 159 Region: 12CO J = 4-3 and 13CO J = 3-2
• Warm Dust and Spatially Variable Polycyclic Aromatic Hydrocarbon Emission in

... Australia Telescope Compact Array Radio Imaging of the Proplyd-like Objects in the Giant HII Region NGC 3603'' . M?cke, A., Koribalski, B.S. , Moffat, A.F.J., Corcoran, M.F., Stevens, I.R. 2002, ApJ 571, 366 . ... Brenneman, L., Corcoran, M.F., Moffat, A.F.J., Marchenko, S.V., Ptak, A., Skalkowski, G., Mushotzky, R., Stevens, I.R., Mueke, A., Koribalski, B.S. , et al. ... Physical Properties of visual counterparts to X-ray sources in the giant HII region NGC 3603'' . ...

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• The Nuclear Region: HI Absorption Measurements
• ATNF Daily Astronomy Picture
• The Central Molecular Clouds in NGC 1808

... Most stars form in clusters, so the simple picture of star formation needs to incorporate the impact that young stars have on their environments, and each other. One region we study is NGC 1333, shown to the left as seen by the Spitzer Space Telescope. This is a тАЬproto-typicalтАЭ star-forming region located тАЬonlyтАЭ 1000 light years away in the direction of the constellation Perseus. ... Copyright 2015 Adele Plunkett. ...

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• The region around SMM J2135-0102 and the galaxy cluster MACS J2135-010217
• Stellar cluster and star-forming region M 17
• The Central Region of Globular Cluster Messier 4 | ESO

... Young super-Jupiter found wandering without a parent . ... Astronomy for Kids . ... Tune into the Asteroid Day press conference . ... Astronomy 101 . ... How can six Trojan asteroids reside in Neptune's L4 region without colliding? ... The gravity of a planet, its star, and the centrifugal force associated with the planetary orbit nearly balance in five regions near the planetт??s path where an asteroid (or spacecraft) could orbit safely. ... Get instant access to subscriber content on Astronomy.com...

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• A violent, complex scene of colliding galaxy clusters | Astronomy.com
• Globular central | Astronomy.com
• Is emission nebula NGC 6334 a mini starburst region? | Astronomy.com

Dense regions reach a maximum size and then fall back into a bound object like a cluster of galaxies. Once the cluster is formed, its physical size remains essentially constant. The space-time diagram below . shows a dense region in blue on the left. ... The galaxies in the blue region are accelerating more just because the region is denser and therefore has higher gravitational forces. ... Tutorial : Part 1 | Part 2 | ...

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• The use of IRAS data to define H II regions
• Radio survey for new compact HII regions
• HyperLEDA documentation: parameter: vdis

... Tadpole Emission Nebula and the Flaming Star Nebula . The constellation of Auriga harbors the cluster NGC 1893 which contains the Tadpole Nebula (IC 410). ... The Flaming Star Nebula, IC 405, is the magenta/purplish area and is the reflection portion of this nebulous region. 5nm Narrowband filters; H-alpha: O-III: S-II - 60: 60: 40 minutes x 600-second sub frames, Total= 2-hours 40-minutes, binned 1x1. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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... STScI-PRC99-34a GETTING TO THE HEART OF A GALAXY This collage of images in visible and infrared light reveals how the barred spiral galaxy NGC 1365 is feeding material into its central region, igniting massive star birth and probably causing its bulge of stars to grow. The material also is fueling a black hole in the galaxy's core. ... In the infrared image at lower right, the Hubble telescope penetrates the dust seen in the WFPC2 picture to reveal more clusters of young stars. ...

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• Young stellar clusters in the star forming region NGC 6357
• The BD+40 region (Abstract)
• Arcetri Star-Formation Group Publications

. XMM-Newton Science Analysis System . omdetect (omdetect-5.14.2) [???] . Meta Index / Home Page / Source Flagging Algorithms . If any source is within the circle of radius 160 centred on x=992, y=1063 is quality flag is set. XMM-Newton SOC/SSC -- 2008-10-22

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• Local-background region shapes and sizes
• A cross-region ARF
• Spatial region settings

. True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . Images show regions used to extract spectra . Regions with red strikes are excluded . Background was subtracted from a region around or close to the SNR. Back to G290.1-00.8 Index . Chandra Supernova Remnant Catalog . Main Page | Galactic SNR | Magellanic Cloud SNR . True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR .

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• Chandra Images for G007.5-01.7
• *imcnts* - Find counts in an extended region, after removing an embedded point
• Chandra Images for G029.7-00.2

... Galaxy Preprocessing in the Local Universe: A Starbursting Group Infalling into A1367 . I'll present a multiwavelength analysis of a compact group infalling at high speed (~1700 km/s) into the dynamically young cluster Abell 1367. ... Moreover Halpha imaging observations reveal extraordinary complex trails of ionized gas behind the galaxies, with projected lengths exceeding 100 kpc. ...

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• Public data products
• Thesis Abstract
• AGES - the Arecibo Galaxy Environment Survey

... Two Start of the data set. touch each other and cancellation big cluster of negative fragment at southwest also at the edge of at the northeast, and it The emerging positive negative fragments at its continues at the previous During the cancellation at the bipolar region, although there are short-living X-ray flashing sometimes, it is hardly to see any clear bright structure. ... 03:29 The negative fragments in the previous bipolar region become less, smaller and weaker. ... Cancellation continues. ...

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• Armagh Observatory
• Solar Active Region 10999 by Deirdre Kelleghan | International Year of
• FETTU - Page 1

Four spacecraft: INTERBALL Tail probe (IB_TAIL), CLUSTER (ESA/NASA), POLAR(NASA/ISAS), GEOTAIL (NASA) are considered. ... FSP criteria | FSP ASCII file | ... FSP time intervals . ... Magnetic local time . Magnetic conjugations . ASCII files : . ... The mulisatellites conjugations : . The FSP3 time intervals : . The FSP polar diagram . Last modified 1 September 2000 . ... IKI RAN | SSC IKI RAN | ...

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• The magnetosphere models
• The Earth's Magnetosphere
• The simulative geophysical regions cross-sections coordinates

IFP gallery SCORPIO (since 2000). Here some data observed on the 6m telescope with IFP installed in the SCORPIO focal reducer are presented. ... Velocity field . Mkn 1157 was observed 1 Sep. 2002 in the Ha emission line. Texp =32x240 sec, seeing 1.5", IFP260. ... This galaxy was observed September, 23 2000 in the Ha emission line, Texp=32x120 sec, seeing 2.5", IFP260. ... PV Cep was observed at the 6m telescope in May, 25 2003 in the [SII] 6716A with IFP501, Texp=36x200 sec, seeing 1.0". ...

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• Fabry-Perot Interferometer: Gallery Old
• My publications
• References LRS

... The large field size of UIT is ideal for studies of globular clusters. ... Very metal poor clusters are conducive for the formation of very hot horizontal branch stars which radiate most of that energy in the UV part of the spectrum. ... M31 is the nearest large spiral galaxy to us. ... These are small dwarf galaxies and NGC 205 is a bit unusual because it still has retained some gas for star formation despite its low mass. M33 is an actively star forming spiral galaxy in the local group. ...

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• Astronomy HyperText Book: Stellar Clusters
• Fabry-Perot Images of Starburst Galaxies
• Fabry-Perot Images of Spiral Galaxies

... Samara region . ... Yesterday Nicholay Merkushkin at a meeting with the Minister of Education and Science of the Russian Federation Dmitry Livanov expressed gratitude for the support of the Samara State Aerospace University (SSAU), in particular, for road map approval of the university development until 2020. ... Participation of ROSCOSMOS in development of the SSAU and training specialists for all ROSCOSMOS structures on the base of Samara University was also discussed at the meeting. ...

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• Samara region
• The Government of Samara Region and SSAU will train personnel for aerospace
• Vladimir Iliykhin - Best Professor of the Region

... The relationship of the mass and the observed galactocentric distance R -- (a), and that of the mass and the total dissipation velocity n taken from Gnedin, Ostriker (1997) -- (b). The dotted line in diagram (a) shows the "cone of survival" according to the paper by Surdin and Arkhipova (1998) . ... The solid line is a regression stright line for the main sequence of clusters, and the dotted line parallel to it separates the sequence of clusters of anomalously small mass shown by open triangles. ...

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• Population of Galactic globular clusters, figures
• Vladimir Marsakov Abstracts

... We report on our ongoing project ``Infrared Study of HII Regions Associated with Small Clouds.' ... These IR data, combined with optical imaging (which will be obtained from the IAC-80 telescope), IRAS survey maps, and existing CO observations of the associated clouds, will allow us to undertake a detailed investigation of the gas-to-dust mass ratio, initial mass function and the star-formation efficiency in these complexes. ... CHECKPSF: check the PSF (Point Spread Function) model, . ...

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• Mapping the Jagiellonian Field of Galaxies
• An IRAF-Independent Interface for Spatial-Region Descriptors
• Structure Detection in Low Intensity X-Ray Images using the Wavelet Transform