M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

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• Astronomy Plus CCD Images of Galaxies

We present far-infrared spectra, ЮЛ = 52-93 ЮМm, obtained with the Spitzer Space Telescope in the spectral energy distribution mode of its Multiband Imaging Photometer for Spitzer instrument, of a selection of luminous compact far-infrared sources in the Small Magellanic Cloud (SMC). ... We compare these results with those obtained in the Large Magellanic Cloud (LMC). ...

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• A Spitzer Space Telescope Far-Infrared Spectral Atlas of Compact Sources in the
• Submillimeter Detections of Spitzer Space Telescope Galaxy Populations
• Understanding Radio-selected Thermal Sources in M33: Ultraviolet, Optical,

... The BM effect causes low-luminosity blazars (particularly BL Lacs) to be missed in surveys because the apparent luminosity of the non-thermal nuclear source does not exceed that of the host galaxy by a large factor. ... Browne (1995). ... In addition to these objects, a large fraction of the newly-identified BL Lacs in our sample (10 of 22; see Table 5) have been so classified only by virtue of our usage of the expanded March? et al. (1996) definition of the BL Lac class. ... 1996). ...

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• Previously Identified Sources
• Sample Identification
• Redshift Distribution

... Classes . Files . ... File List . File Members . images . Regions . ... 00087 // The image regions have to contain WCRegion objects, otherwise an 00088 // exception is thrown. 00089 // group 00090 WCCompound ( const ImageRegion region1, const ImageRegion region2); 00091 WCCompound ( const ImageRegion * region1, 00092 const ImageRegion * region2 = 0, 00093 const ImageRegion * region3 = 0, 00094 const ImageRegion * region4 = 0, 00095 const ...

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• The spectral energy distribution of PKS 2004-447: a compact steep-spectrum
• casacore: images/Regions/ImageRegion.h Source File
• casacore: images/Regions/WCUnion.h Source File

... For complete information about the apparent distribution of HII-regions along the whole galactio equator o Catalogue of 698 known emission nebulae is given on the basis of 13 lists and catalogues of these objects. ... The list of objects from the source-catalogues of HII-regions excluded as SNR, planetaries and galaxies is also given. to be added S number reconstructed from MSL_OPT (Dixon) No RA(1950) DEC(1950) lll.l bb.b Dia" Source NGC,IC,M 1 00 00 18. ...

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• Introduction
• IRAS IDS
• RBSC-NVSS SAMPLE. I. RADIO AND OPTICAL IDENTIFICATIONS

... The search for distant objects which can be both galaxies and quasars is one of the most important problems of observational astrphysics, because it allows one to determine cosmological parameters connected with the time of appearence and evolution of stellar systems, large scale structure of the Universe. ... Radio galaxies are important objects to be studied because they are sources of infrared-optical-ultraviolet continuum, emission lines and continual radio emission. ...

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• Radio sources identfification
• SCORPIO: IFP Gallery
• Results scientific researchs LRS

... Posts tagged ?source matching? ... Without an optical afterglow, a galaxy within the 2 arc second error region of a GRB x-ray afterglow is identified as a host galaxy; however confusion can rise due to the facts that 1. the edge of a galaxy is diffused, 2. multiple sources could exist within 2 arc second error region, 3.the distance between the galaxy and the x-ray afterglow is measured by projection, and 4. lensing causes increase of brightness and position shifts. ... ArXiv] GRB host galaxies, Aug...

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• Source Selection
• The AstroStat Slog GRB
• Region Names and Colors

... Galaxy Evolution home . ... The origin and evolution of radio sources . Radio sources and their environments . ... We are investigating how this interaction effects galaxy evolution in general as well as the feedback effect of the radio source on its host galaxy and AGN. ... One direct observational manifestation of this interaction is the existence of extended regions of emission-line gas which show a clear spatial relationship to the radio source itself. ...

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• The quasar fraction in a sample of giant radio sources
• Galaxy Evolution: Cosmological evolution of star formation
• Galaxy Evolution: Micr Quasars

... A radio galaxy is a galaxy that emits an unusually big amount of energy at radio wavelengths. ... Inside of each galaxy with an active nucleus (radio galaxies are among them) there must be a system of a "central machine" responsible for the colossal amount of the emitted energy from radio to gamma ranges. ... Sometimes a radio source in an active galaxy may flare again if the needed conditions appear (a new portion of matter would fall into the furnace of the "central machine"). ...

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• Detection of Radio Transients and Variable Radio Sources Using the Archive Data
• Metagalaxy sector, archive 2015
• Galaxy sector, archive 1997

... I note that "Z" plays an important role in what the ALFA surveys will look for: . ... low Z . nearby low mass . ... Arecibo . ... ADBS (Arecibo Dual Beam Survey): Rosenberg & Schneider 2002. ... A few sources with unobvious optical counterparts. ... Coverage wins for volume, but if you do a shallow survey you are sampling only the nearby volume at low masses. ... So need artificial test sources to find completeness. ... Total volume within survey in which source could have been detected. ...

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• Arecibo Galaxy Environment Survey (AGES)

... Up: Science Data Pipelines . ... We designed and developed a package which simulates extragalactic point source data within a given field of view and SIRTF band. ... The simulator is modular and extensible to enable multi-wavelength simulations, has been optimized by utilizing parallel processing capabilities, and will be used to test pipeline software. ... The extragalactic simulator is capable of generating large numbers of galaxies within a given patch of sky for SIRTF pipeline testing. ...

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• Integrating the HST Guide Star Catalog into the NASA/IPAC Extragalactic
• Access to Data Sources and the ESO SkyCat Tool
• Classification of Objects in the Guide Star Catalog

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Quasi-stationary electron distributions for the different values of the particle escape time. ... The electron-cyclotron maser instability is widespread in the Universe, producing, e.g., radio emission of the magnetized planets and cool substellar objects. ... The model used takes into account the radiation escape from the source region and the particle flow through this region. ...

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• Impact Hazard
• Mysterious music source revealed | International Year of Astronomy in Ireland |
• M.D. Smith, Research Astronomer

Next: - for Supernova Explosions Up: Evolution of Supernova Explosion Previous: The Supernovae Rates . ... For a homogeneous space distribution of sources, - is a linear law with slope 3/2 (in other words, because and , where R is a distance to sample source). ... Then, for the homogeneous space distribution of sources, the - dependence would be , where C is some constant. However, for distant objects - depends not only on the space distribution of the sources, but also on some other factors. ...

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• Effect of sources evolution on
• Population Synthesis of X-ray Sources at the Galactic Center
• X-ray Galactic Sources and Binary Radiopulsars as Probes of the Initial Mass

... The Galaxy and the Quasar . ... The Lagoon Nebula in Three Colors . ... The bright Lagoon Nebula is home to a diverse array of astronomical objects. Particularly interesting sources include a bright open cluster of stars and several energetic star-forming regions. ... X Ray Cygnus A . ... Amazingly detailed, this false-color x-ray image is centered on the galaxy Cygnus A. Recorded by the orbiting Chandra Observatory, Cygnus A is seen here as a spectacular high energy x-ray source. ...

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INTEGRAL spectra of Galactic Bulge sources. Laura BarragАn Laura BarragАn. ... ISGRI // PICsIT FOV ~ 8є x 8є · JEM-X (Join European Monitor for X-rays) 3 ­ 35 keV Images FOV: 5є radius circle · SPI (Spectrometer on Integral) · OMC (Optical Monitoring Camera) INTEGRAL spectra of Galactic Bulge sources. ... Laura BarragАn Obtaining the data IBIS/ISGRI 81 sources 10 hours JEM-X 12 more significant sources 1 hour INTEGRAL spectra of Galactic Bulge sources. ...

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• http://xmm.vilspa.esa.es/sas/8.0.0/doc/omregion.ps.gz
• http://xmm.vilspa.esa.es/sas/7.1.0/doc/omregion.ps.gz
• http://xmm.vilspa.esa.es/sas/7.0.0/doc/omregion.ps.gz

Recent observations of the Sculptor Galaxy by NASA's Nuclear Spectroscopic Telescope ARray (NuSTAR), combined with those from NASA's Chandra X-ray Observatory, suggest that the supermassive black hole at the center of NGC 253 has dozed off, or gone inactive, sometime in the past decade. ... This object, which appears as a blue spot near the hotter, central region of the galaxy, is either a black hole or a dense, dead star, called a neutron star, feeding off a partner star. ...

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B0D1BD6CC-C96C-4D4E-9602-3922A723F6D7%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B5B7D3E80-0ED8-4013-99ED-6E0A0F05B9BD%7D
• January 2006 resources | Astronomy.com

... A tussle in the distant Universe. This Hubble Space Telescope image shows evidence for a merger between a quasar and a companion galaxy. The quasar is the bright object just beneath the image center, and the wisps of material around it are remains of a galaxy disrupted by the interaction between it and the quasar. ... Galactic Nuclei: Old Quasars? Quasars as Probes of the Distant Universe . ... Quasars. ... The name quasar is made up with parts of the words "quasi-stellar radio." ...

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• ASP: Book Review
• ASP: Astronomy Behind the Headlines
• ASP: Black Holes: An Introductory Resource List

Deep Space Image Index . ... Cartwheel Galaxy ( GIF , 299K; JPEG , 62K; caption ) . NGC1850 - Tale of Two Clusters ( GIF , 255K; JPEG , 117K; caption ) . Cat's Eye Nebula ( GIF , 113K; TIF , 1M; caption ) . Ring Structure Around Supernova 1987A ( TIF , 2M; caption ) . 30 Doradus Nebula ( GIF , 379K; caption ) . Eta Carinae Star ( GIF , 433K; caption ) . Cygnus Loop Supernova Blast Wave ( TIF , 4M; caption ) . Spiral Galaxy M51 ( TIF , 769K; caption ) . ...

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• A universal physical relation for quasars
• The first ultraviolet average spectrum of z=2.4 quasars
• Water along the outflow from a young nearby protostar: a Herschel view

Gamma-rays from the GC . M.Chernyakova (DIAS), D.Malyshev (DIAS), F.Aharonian (DIAS, MPIK), R.M.Crocker(MPIK), D.I.Jones(MPIK) 1 10°x10° Count and TS maps (>300 GeV) Gamma-rays from the GC 2 TS maps of the GC at different energies 300 MeV ­ 3GeV 3 GeV ­ 30 GeV 30 GeV ­ 300 GeV Gamma-rays from the GC 3 4 Gamma-rays from the GC Lightcurve 5 Gamma-rays from the GC Source spectrum Model X-ray and low-energy emission come from the central object, probably SMBH accretion disk. ...

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• http://hea.iki.rssi.ru/ru/Posters/INTEGRAL_2007_anisotropy.pdf
• http://hea.iki.rssi.ru/integral06/papers/E36_Stephen01-07May07_17:57:56.pdf
• INTEGRAL 9-year Galactic Survey

... Courtesy of NASA/ESA Observation data (J2000 epoch) Constellation Right ascension Declination Redshift Distance Type Serpens Caput 15h 17m 14.4s[] +21° 35 08[] 12,740±50 km/s[][1] 600±30 Mly (183±8 Mpc)[1] SA0(r) [citation needed ] [a] Apparent dimensions (V) 0.28 в 0.28[] Apparent magnitude (V) 16.0[] Notable features Ring galaxy Other designations PGC 54559,[] PRC D-51[] See also: Galaxy, List of galaxies Hoag's Object is a non-typical galaxy of the type known as a ring galaxy. ...

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• http://www.astro.louisville.edu/software/sbig/archive/xmccd-4.1/xmccd-4.1e/libcfitsio/libcfitsio-3.310/Makefile.in
• http://www.astro.louisville.edu/software/sbig/archive/xmccd-4.1/xmccd-4.1e/libcfitsio/libcfitsio-3.310/Makefile
• http://www.astro.louisville.edu/software/sbig/archive/xmccd-4.2.1/xmccd-4.2.1/libcfitsio/libcfitsio-3.340/Makefile