... A Massive Star in NGC 6357 . ... Credit Copyright: NASA , ESA and J. M. Apellюniz ( IAA , Spain) Explanation: For reasons unknown, NGC 6357 is forming some of the most massive stars ever discovered. One such massive star, near the center of NGC 6357 , is framed above carving out its own interstellar castle with its energetic light from surrounding gas and dust. ... Publications with keywords: star formation - massive stars - interstellar medium . ... NGC 6357s Cathedral to Massive Stars . ...

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• The Light, the Dark, and the Dusty
• NGC 6888: A Tricolor Starfield
• Shaping NGC 6188

... 2010 November 21 . A Massive Star in NGC 6357 . ... Explanation: For reasons unknown, NGC 6357 is forming some of the most massive stars ever discovered. One such massive star, near the center of NGC 6357 , is framed above carving out its own interstellar castle with its energetic light from surrounding gas and dust. ... Near the more obvious Cat's Paw nebula, NGC 6357 houses the open star cluster Pismis 24 , home to many of these tremendously bright and blue stars. ... About APOD | ...

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• APOD: 2014 November 18 - Star Formation in the Tadpole Nebula
• APOD: 2012 November 18 - NGC 6357: Cathedral to Massive Stars
• APOD: November 22, 1998 - The High Energy Crab Nebula

... STScI-PRC95-45a CRUCIBLE OF CREATION: PANORAMIC HUBBLE MOSAIC ZOOMS IN ON MAELSTROM OF STAR BIRTH This spectacular color panorama of the center the Orion nebula is one of the largest pictures ever assembled from individual images taken with NASA's Hubble Space Telescope. ... Though this 2.5 light-years wide view is still a small portion of the entire nebula, it includes almost all of the light from the bright glowing clouds of gas and a star cluster associated with the nebula. ...

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... STScI-PRC98-11A STARING INTO THE WINDS OF DESTRUCTION: HST/NICMOS IMAGES OF THE PLANETARY NEBULA NGC 7027 The Hubble Space Telescope's Near Infrared Camera and Multi-Object Spectrometer (NICMOS) has captured a glimpse of a brief stage in the burnout of NGC 7027, a medium-mass star like our sun. ... The material settles into a wind of gas and dust blowing away from the dying star. ... During this phase, intense ultraviolet radiation from the central star lights up a region of gas surrounding it. ...

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• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ISM/StarTear.txt
• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ViaLattea/0025.txt
• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ISM/Trifid.txt

... All previous such superstars have been found along with many companion stars in the centres of crowded star clusters. The star is known as VFTS 682 from the VLT-FLAMES Tarantula Survey catalogue of the European Southern Observatory's Very Large Telescope (VLT) located at Paranal in Chile by means of the attached FLAMES instrument. ... Although VFTS 682 seems to be alone now it is not very far away from a very rich star cluster known as RMC 136 that contains several similar superstars. ...

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• M. de Groot, Senior Research Associate
• Impact Hazard
• Refereed Journal Publications 1999

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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• The Galaxy Gallery Page 6: Comparative Morphology
• Low Surface Brightness Galaxy Gallery
• Galaxy Gallery Page II

... 1) A Multiwavelength Study of Tadpole Galaxies in the Hubble Ultra Deep Field, Straughn, A., et al. (including S. Ravindranath), 2015, ApJ, 814, 97. 2) The Rate of Core Collapse Supernovae to Redshift 2.5 from CANDELS and CLASH Supernova Surveys, Strolger, L., et al. (including S. Ravindranath), 2015, ApJ, 813, 93. ... 18) "Resolved Galaxies in the Hubble Ultra Deep Field: Star Formation in Disks at High Redshift", Elmegreen, D.M., Elmegreen, B.G., Ravindranath, S., Coe, D.A., 2007, ApJ, 658, 763. ...

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• HST this week: 331
• Roelof's Publications
• HST this week: 329

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Visiting Australia Telescope Compact Array . ... Observations taken with the Australia Telescope Compact Array for the giant radio galaxy B0114-476 reveal a "double-double" structure with two outer diffuse lobes and two inner jet-like features. ...

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• ATNF Colloquium
• Near-infrared millihertz variability of the wisps and jet in the crab pulsar
• ATNF Science Highlights 2004

... Bad Astronomy . Misconceptions . ... Bad Astronomy : "We're light years more advanced than our competition!" ... Even the closest astronomical object, the Moon, is 400,000 kilometers away! ... A beam of light will travel 9,500,000,000,000 kilometers in one year. This distance is defined as a light year ; the distance light travels in a year. ... This is another example of Bad Astronomy; like a light year, a parsec is a unit of distance, not time (to be specific, it equals 3.26 light years) . ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Mad Science

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Publications of the ASP (PASP) . ... By the Light of the Moon . ... Moonlight varies over a greater range than the light from any other bright celestial object?planet, satellite, or star?in the entire sky. ... The level of light that disturbs this gland and its secretions is not yet accurately known, but indications are that this level is not much brighter than the full Moon. ...

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• ASP: Big Clusters, Tiny Galaxies
• ASP: Accidental Astrophysics: The Devil's In the Magnitudes, Part II
• ASP: Bright-Lights, Big-City, Overcast Survival Guide

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

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• The Sun
• The Sun -- History

... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: The onset of cluster formation near young high-mass stars . ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... We performed a NACO survey of massive young stellar objects (MYSOs) assessing the incidence of lower mass objects at angular scales 0:500 < d < 200 during the earliest, deeply embedded, phases of star formation. ... Return to list of thesis topics . ...

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• The Very Large Telescope Project
• Los Cielos de Am , The darkest sky and the two galactic hemispheres
• The Brightness of the Night Sky

... Research . ... A rare hybrid morphology radio galaxy . ... In this project we will be able to investigate the environmental effect on star formation and galaxy evolution in individual galaxies falling into the cluster through radio observations of active galactic nuclei (AGN). Current models of galaxy evolution regulate the star formation rates within the simulated galaxies by invoking radio-mode feedback from AGN. ... Julie.Banfield@anu.edu.au . ...

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• IAU Commission #34 (Interstellar Matter)
• GSAOI Orion Nebula Cluster Science Page
• Emma Kirby - Science

The Sun is our nearest star and the source of energy for life on Earth. ... For centuries astronomers wondered whether they were clouds floating in the Sun's atmosphere, but we now know that they really are huge regions of magnetic field, about as intense as the field at the poles of an iron magnet. ... Such abrupt events were named solar flares , and what made them especially interesting was that occasionally, after a prominent flare, a magnetic storm would erupt on Earth. ...

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• Solar System Extrema
• Comet Introduction
• Phoebe

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The Sun Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic Evolution ... So far, one planet has been studied by this method. ...

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• http://www.aaa.org/s932/images/09fallclass3.pdf
• This MonthтАЩs Sky тАУ February 2016 ? Amateur Astronomers Association of New

... Image Quality of the VLT . Total Optical Control . First light for the ESO VLT unit telescope 1 occurred during the workshop. ... The image shown (Figure 1 ) here was obtained with the VLT on May 16, 1998, in red light (R band), i.e. while the mirror was still uncoated. ... In this diagram (FIgure 2), the measured image quality of the VLT UT1 astronomical images is plotted versus the ``seeing", as measured by the Seeing Monitor, a small telescope also located on top of the Paranal Mountain. ...

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... Wispy tendrils of hot dust and gas glow brightly in this ultraviolet image of the Cygnus Loop nebula, taken by NASA s Galaxy Evolution Explorer. The nebula lies about 1,500 light-years away and is a supernova remnant, left over from a massive stellar explosion that occurred between 5,000 to 8,000 years ago. ... The filaments of gas and dust visible here in ultraviolet light were heated by the shock wave from the supernova, which is still spreading outward from the original explosion. ...

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B09509B1C-2FD6-4410-A47C-0701A41550E6%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B9A5B5658-6AD3-4C0D-A604-FA6912ED957C%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BC270B0C8-3EF4-46A0-89CB-EAD09E13BCAC%7D

... Phase light curves of binary model that consists of a primary component with mass M 1 and a secondary component with mass M 2 . ... The input parameters of the problem are the accretion rate onto the binary components ( ), the component mass ratio q = M 2 /M 1 , the orbital inclination to the line of sight , the eccentricity e, the rotation angle of the apsidal line relative to the observer , and the parameter c characterizing viscosity. ...

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• Conferences
• Articles

Astronotes Armagh Planetarium's Stellar Blog! ... Our Galaxy . ... Other Galaxies . ... Space Flight . ... October . ... Posted on November 19, 2010 | 1 Comment Could HIP 13044 b be the strangest exoplanet yet found? ... Continue Reading.. ... 2 Comments Using the Hubble Space Telescope, astronomers have been looking ten thousand years into the future of the vast globular cluster Omega Centauri. ... Posted on October 4, 2010 | 1 Comment Gorgeous! ... Posted on September 27, 2010 | ...

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• Tarantula Nebula in stunning Hubble Image | Astronotes
• Exoplanet HAT-P-1b: weird, warm and fuzzy | Astronotes
• A Summer Night?s Stargazing | Astronotes

... Centaurus A : 15,000,000 light years away, in the constellation Centaurus, the closest AG to Earth . ... Astronomers think that the reason for the unusual shape of this galaxy is because hundreds of millions of years ago two galaxies, one dusty spiral and one bright ellipictal, collided causing a massive black hole in the middle and bright emmision of light. ... Andromeda galaxy: 2.8 million light years away, closest spiral galaxy to earth, farthest object one can see without a telescope. ...

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• dictionary
• Paul & Avivah Jonah's House
• Neutron Star X-ray Binaries with Massive Companions