... The peak in the differential number counts corresponds to a population of faint sources that is not expected from predictions based on 15 ЮМm counts from the Infrared Space Observatory. ... This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under NASA contract 1407. ... ADS Citation Query . citations = 284 . citations vs. year [year,citations] . ...

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• Far-infrared Source Counts at 70 and 160 Microns in Spitzer Deep Surveys
• Herschel Key Program Heritage: a Far-Infrared Source Catalog for the Magellanic
• Life Cycles - Topics

... About ATNF overview . ... Parkes radio telescope . ... Online Resources . ... Australia Telescope 20GHz Survey . ... We present the first results from a study of the radio continuum properties of galaxies in the 2dF Galaxy Redshift Survey, based on thirty 2dF fields covering a total area of about 100deg 2 . ... mag. are detected as radio continuum sources in the NRAO VLA Sky Survey (NVSS). ... radio continuum: galaxies, galaxies: distances and redshifts, galaxies: active, galaxies: starburst . ...

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• News Results
• Duchamp Source Finder
• The HIPASS Bright Galaxy Catalog

... 633Slee+ Fifty-eight fields near rich clusters of galaxies were surveyed with the Very Large Array using scaled arrays in the B/C and/or C/D configurations at 1.5 GHz and 4.9 GHz. The fields were centered on steep spectrum sources in or near clusters that were earlier surveyed with lower resolution telescopes. ... The columns are : . Column 1 Cluster Field (Z1518 = Zw1518.8+0747) . Column 2 distance of source from cluster centre in Abell radii . ... Column 5 1.5 GHz flux (mJy) . ...

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• A VLA Survey of Rich Clusters of Galaxies III
• Upper Limits for Sources not Detected
• The ROSAT All-Sky Survey Faint Source Catalogue

... During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. ... We used the data from "Cold" radio surveys carried out with RATAN-600 in 1980-1994 to search for radio sources with significant flux variability. ... On possibility of detection of variable sources using the data of Cold surveys carried out on RATAN-600. ... Detection of Variable Sources Using the Data of "Cold" Surveys. ...

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• Metagalaxy sector, archive 2015
• Study of radio spectra and variability of GPS sources
• RCJ0311+0507

... 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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• Galaxy Evolution: The origin and evoltuion of radio sources
• Galaxy Evolution: Local: Meetings
• Galaxy Evolution: Local: Journals

. Go Here for Hubble Ultra Deep Field . ___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

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• The Galaxy Gallery: Messier Objects

... 172 ] Briefly, the count rate at the detector from a source at a redshift z is . ... Figure 55 shows the ``Green functions'' for the double compact binary merging rate   evolution assuming no collapse anisotropy. ... Another way that diverse peculiarities in the - distribution induced by the sources evolution could arise is connected with a possible non-monotonic character of the star formation rate in galaxies. ... 22 ] Figure  56 shows two-dimensional cuts through the parameter space. ...

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• Radiopulsars as Sources of Cosmic Rays
• Gravitational wave background from nearby galaxies
• Population Synthesis of X-ray Sources at the Galactic Center

... QSO spectra in the ROSAT band are steeper than the background at harder energies, and furthermore at fluxes below 1E-14 ergs/(s cmќ) the quasar source counts flatten off and are replaced by more numerous populations of relatively low red-shift objects, apparently Narrow Emission Line Galaxies (NELG). ... We extracted the luminosity function from ROSAT Deep Survey results, and extrapolated by a factor of 2 - 3 to account for changes expected in the harder XMM band. ...

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• Background subtracted source counts
• Source detection
• EPIC source finding thread: step by step

... SNe Atlas . ... Charts . ... On supernovae physics.. ... Photographic atlases of galaxies.. ... The Color Atlas of Galaxies by James D. Wray; 1988; Cambridge University Press, The Pitt Building, Trumpington St. Cambridge, CB2 1RP, UK; a CCD color atlas of galaxies bny a professional astronomer using telescopes at McDonald Observatories and Las Campanas. some 600 images of galaxies with excellent resolution of the nuclear regions. ... Great for deep sky work or CCD hunting with a large telescope. ...

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• APOD: 2003 September 17 - The 2MASS Galaxy Sky
• APOD: 2010 December 27 - One Million Galaxies
• APOD: 2005 June 26 - The 2MASS Galaxy Sky

... -------------- --------------------------------------------------------------- 0845am WELCOME ------- Harvey Tananbaum 0900am A SURVEY of X-RAY SURVEYS ------- MISTs and ANEWs Paul Green 0910am PLENARY SESSION 1: The X-ray Time Machine ----------------- Chair - Georgantopoulos INVITED REVIEW: Amy Barger 25+10 Extragalactic Surveys 0935am 4 CONTRIBUTED ...

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• http://hea-www.harvard.edu/~pgreen/SOC/1.html
• The Chandra Multiwavelength Project (ChaMP)
• The AstroStat Slog source detection

The HI Mass Function: Open Questions Stephen Schneider University of Massachusetts The Evolution of Galaxies through the Neutral Hydrogen Window 1 February 2008 HI Mass Functions = ­1.5 = ­1.2 Is the bright end variable? Is There One HI Mass Function? ... Also face flux-bias problems when hunting close to noise: promote more weak sources than lose stronger sources Arecibo Slice AGES HI Mass Function to Date The slope is relatively flat for the first 142 galaxies detected. ...

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• HI Mass Function
• Arecibo Galaxy Environment Survey (AGES)
• Some Useful Resources

The starburst-AGN connection in local and distant galaxies is relevant for understanding galaxy formation and evolution, the star formation and metal enrichment history of the universe, the origin of the extragalactic background at low and high energies, and the origin of nuclear activity in galaxies. ... In this contest, I'm interested in detremining the Infrared spheroid (bulge) structural parameters obtained by a two-dimensional image in galaxies with well known BH masses. ...

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• A new survey of X-ray clusters of galaxies with the Swift-X-ray Telescope
• Deadlines - IGM@50: Is the Intergalactic Medium driving Star Formation? - June
• SECCO1: an "almost-dark" dwarf galaxy

Astronomy Picture of the Day . ... 26.06.2005 . ... Credit: 2MASS , T. H. Jarrett , J. Carpenter, R. Hurt Explanation: Are the nearest galaxies distributed randomly? ... Many galaxies are gravitationally bound together to form clusters , which themselves are loosely bound into superclusters , which in turn are sometimes seen to align over even larger scale structures . ... Publications with keywords: galaxies - 2MASS . Publications with words: galaxies - 2MASS . ... Two Million Galaxies . ...

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• Астронет > The 2MASS Galaxy Sky
• One Million Galaxies
• XWare > APOD

... 0.15 PHA . ... IGR J16195-4945 . ... IGR J16207-5129 . ... IGR J16318-4848 . ... IGR J16320-4751 . ... IGR J16418-4532 . ... IGR J16479-4514 . ... IGR J16558-5203 . ... IGR J12349-6434 . ... IGR J15360-5750 . ... IGR J14493-5534 . ... IGR J13107-5551 . ... IGR J12026-5349 . ... IGR J16465-4507 . ... IGR J11305-6256 . ... IGR J11435-6109 . ... IGR J14552-5133 . ... INTEGRAL/IBIS 9-year Galactic Hard X-Ray Survey* , A , Volume 545, id.A27 { NASA ADS | ... 9-year Galactic survey , 2012 . ...

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... We employ Bayesian inference for the joint estimation of sources and background on ROSAT All-Sky Survey (RASS) data. ... Background maps were estimated in a single step together with the detection of sources without pixel censoring. ... The source probability is evaluated for single pixels as well as for pixel domains to enhance source detection of weak and extended sources. ... The spline fits the background component whereas count enhancements classify pixel (domains) with source contributions. ...

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• An Extragalactic Point Source Simulator for SIRTF Pipeline Testing
• VO Resources
• A New PROS Task for Calculating HRI Source Intensities or Upper Limits

... 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
• The ROSAT Bright Survey: II. Catalogue of all high-galactic latitude RASS
• EXPERIMENT COLD: THE FIRST DEEP SKY SURVEY WITH THE RATAN-600 RADIO TELESCOPE

. Comment on J1651+0459 . No detection: this symmetric double-lobe radio galaxy is not detected in our VLBA survey. The jet-dominated VLA structure at 1.4 and 5 GHz is shown by Harvanek & Hardcastle (1998) and Dreher & Feigelson (1984). VLBApls home page . Last modified: 16 Oct 2000

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• VLBApls source sample

home education > resources . ... Resources . ... Astronomy Education Bibliography . ... Black Holes: An Introductory Resource List . ... Castelvecchi, D. "A New Breed of Black Hole" in Sky Telescope , Apr. 2006, p. 36. ... Charles, P. Wagner, R. "Black Holes in Binary Stars: Weighing the Evidence" in Sky Telescope , May 1996, p. 38. ... Nadis, S. "The Secret Lives of Black Holes" in Astronomy , Nov. 2007, p. 28. ... Nadis, S. "Black Holes: Seeing the Unseeable" in Astronomy , Apr. 2007, p. 26. ...

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• ASP: The Universe At Your Fingertips TOC
• ASP: Astronomy Behind the Headlines
• ASP: NGC Images on the Net

... Science . ... Science Users Information > Science and Technical Meetings > Conferences 2002 > cosmology2002 . ... Observing with ESO Telescopes . ... Public Surveys . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... ESO Data Access Policy . ... Review: Weak Lensing . ... Tangential alignement of galaxies in a STIS Parallel shear survey field: a new dark lens candidate . ... Poster: . ... New Clues on clustering evolution from the K20 and FIRES surveys . ... data ...

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• The Browne & March? Effect
• ESO - Data Releases
• Source Classification

ACE Real Time Solar Wind (RTSW) data, Kp index, solar and geophysical forecasts are contributed by the U.S. Department of Commerce, NOAA, Space Environment Center and are available to broad community at http://www.sec.noaa.gov/index.html . ... The Kp planetary index is prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Laboratory. from preliminary data provided by the contributing stations and the U.S. Geological Survey. ... Instrument Web site is at URL: http://swepam.lanl.gov ...

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• Spectrum-RG
• Main results of the experimental and theoretical research completed in 2010
• "Exploration" as a Classroom Resource