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Topic: Starburst (astronomy)

  Starburst - Wikipedia, the free encyclopedia
In astronomy, starburst is a generic term to describe a region of space with a much higher than normal star formation.
A starburst is also a symbol consisting of a star surrounded by rays emanating from it.
Starburst is a term for a type of migraine headache.
en.wikipedia.org /wiki/Starburst   (172 words)

 * M82 - (Astronomy): Definition
This peculiar starburst galaxy in Ursa Major was discovered by Bode in December 1774 and Messier observed it on February 9, 1781...
Observations of M82 and other starburst galaxies suggest that the origin of ultraluminous sources is related to a burst of star formation triggered by a collision with another galaxy,...
Such starburst galaxies seem to be undergoing a collision that causes rapid star formation.
en.mimi.hu /astronomy/m82.html   (636 words)

 Far infrared astronomy - Wikipedia, the free encyclopedia
Far infrared astronomy is the branch of astronomy and astrophysics which deals with objects visible in far-infrared radiation (extending from 30μm towards submillimeter wavelengths around 450μm).
Others, called starburst galaxies, have an extremely high number of newly forming stars heating interstellar dust clouds.
Most far-infrared astronomy is performed by satellites such as Spitzer, IRAS and ISO.
en.wikipedia.org /wiki/Far_infrared_astronomy   (371 words)

 Gene Smith's Astronomy Tutorial - Starburst Galaxies   (Site not responding. Last check: 2007-11-05)
The immensely successful Infrared Astronomical Satellite, launched in 1983, showed that starbursts may be a common mode of evolution for galaxies and that starbursts may be intensely luminous, emitting quasar-like amounts of energy at infrared wavelengths.
The spectrum of a Starburst Galaxy looks much like that of an ionized hydrogen region because the light from these galaxies is dominated by giant HII regions ionized by recently formed, massive, hot stars.
Many astronomers think that the nuclear starburst may feed the Black Holes believed to be lurking in the galaxy nuclei giving birth to a new quasar, as suggested by the jet in the last image.
cassfos02.ucsd.edu /public/tutorial/Starbursts.html   (487 words)

 Radio Astronomy Group   (Site not responding. Last check: 2007-11-05)
The figure shows a false colour image of the outflow from the prototypical starburst galaxy M82 in the CO J=3-2 transition at 345 GHz (0.8 mm wavelength).
The starburst region itself is in the disk, about 500 pc in diameter, roughly the size of the innermost contour on the map.
Comparison with lower transitions reveals that the CO is either cooler or less dense in the outflow than in the disk, where it is heated vigorously by star formation.
www.astro.utoronto.ca /~yao/Radio/research.html   (459 words)

 Institute of Astronomy » Starburst 2004
Nearby large-scale starbursts are increasingly rare, and only with the spatial resolution of the Hubble Space Telescope has it become possible to study the detailed characteristics of the nearest examples, which are often considered to be the nearest analogues to the actively star forming galaxies at high redshifts.
Starbursts in dwarf galaxies, on the other hand, occur very frequently, both in the local Universe and beyond.
The Institute of Astronomy is part of the Faculty of Physics and Chemistry within the School of the Physical Sciences of The University of Cambridge
www.ast.cam.ac.uk /meetings/starburst2004   (714 words)

 M82 Press Release 21/5/04
Many of the stars that are formed in the M82 starburst end their short lives with a supernova explosion.
The WIYN 3.5 m telescope is a joint facility of the University of Wisconsin-Madison, Indiana University, Yale University and the National Optical Astronomy Observatories.
Starburst galaxies account for only a few per cent of the galaxies in our local universe but were much more common in the distant past when the universe was smaller and galaxies were closer together.
www.star.ucl.ac.uk /~msw/M82_pr   (875 words)

 Research in astronomy (Emmanuel Davoust)
In the frame of a long-term project on the effects of the environment on the morphology of elliptical galaxies by the analysis of CCD images of large samples, I study the morphological segregation of ellipticals and lenticulars in clusters of galaxies.
The abundance of nitrogen in starburst nucleus galaxies.
I continue the morphological analysis and the measure of the radial velocity and velocity dispersion of globular clusters in the nearby external galaxies M31 and NGC 147.
webast.ast.obs-mip.fr /people/davoust/research.html   (831 words)

 The Starburst Foundation: A nonprofit scientific research institute
One key area of Starburst research is concerned with the investigation of Galactic superwaves, intense cosmic ray particle barrages that travel to us from the center of our Galaxy and that last for periods of up to a few thousand years.
Starburst researcher Dr. Paul LaViolette began alerting the scientific community to the existence of superwaves in 1983 through his published papers and scientific conference presentations.
Starburst is also working on subquantum kinetics, a new microphysics methodology that has successfully solved many of the problems that presently confront physics and astronomy.
www.etheric.com /Starburst/Starburst.html   (1106 words)

 Tiverton Astronomy Society, Monthly Image   (Site not responding. Last check: 2007-11-05)
NGC 3310 is a "starburst" galaxy approximately 59 million light-years away, in the direction of Ursa Major.
Such starburst activity within a galaxy may be triggered by collision with another galaxy.
Until recently, starburst activity was assumed to be a short-lived process, but evidence provided by galaxies such as NGC 3310 indicate that periods of starburst activity may be longer-lived than previously thought.
www.tivas.org.uk /mi/2001/mi_09-2001_ngc3310.html   (107 words)

 Chandra :: Field Guide to X-ray Sources :: Starburst Galaxies
During a starburst, stars can form at tens, even hundreds of times greater rates than the star formation rate in normal galaxies.
The most popular theory for the cause of a starburst is that it is triggered by a close encounter or collision with another galaxy.
When most of the gas is used up or blown away by the explosions, the starburst ends.
chandra.harvard.edu /xray_sources/starburst.html   (227 words)

 Recent publications (1995 - 2004) (Emmanuel Davoust)
The starburst nature of the PDS galaxies is established by comparing their Lfir/Lb ratios and IRAS colors with those of starburst galaxies from the literature.
The CO linewidths and the starburst ages are correlated : galaxies with young (4-6 Myr) starbursts display a CO distribution mostly concentrated in the nucleus, while those with older starbursts show broader CO lines revealing a wider spatial extension.
This is a presentation of the purpose of astronomy in the context of modern society.
webast.ast.obs-mip.fr /users/davoust/pub_rec.html   (4825 words)

 wire   (Site not responding. Last check: 2007-11-05)
One of the most important goals of modern astronomy is to understand the formation and evolution of galaxies.
Starburst galaxies are an important population because they represent 30% of the energy budget of the local universe and because almost all of their luminosity is due to star-forming regions.
The number of sources as a function of flux density will indicate the rate of evolution of the starburst galaxy population, that is, the variation of the number and luminosity of these galaxies with cosmic epoch.
sunland.gsfc.nasa.gov /smex/wire   (863 words)

 The Structure and Kinematics of Starburst Galaxies
These galaxies, which harbor intense star forming regions, may be the local analogues of young galaxies experiencing their first burst of star formation.
Starbursts are also prime sites to study massive stars and their effects on the interstellar and intergalactic medium.
By comparison with published models, the profiles and strengths of the stellar lines can be used to make inferences about the stellar content of the starburst population.
www.pha.jhu.edu /~cat/gbo   (394 words)

 HTML Version of AstroWeb Database Company Seven Astro-Optics Division Description of Wadsworth Astronomy Resource Center
This is the STARBURST phenomenon in galaxies, to be held at INAOE.
The conference responds to the rapidly growing interest in the Starburst phenomenon and the possible links between nuclear Starburst and AGN activity.The central aim is to provide an open forum to discuss the most recent results about the Starburst activity, and the possible Starburst-AGN connections.
Astronomy at the Dalton School is a college level, full year modern astronomy elective course.
webplaza.pt.lu /public/fklaess/text/astronomy.html   (8966 words)

 Galaxies and the Universe - Starburst Galaxies
The role of reddening and obscuration in starbursts is complex, and makes detailed interpretation of their continuum and emission-line properties complicated.
Starburst mechanisms: Much of the interest in starburst galaxies has been brought on by wondering how some galaxies, and often very small regions in their nuclei, manage to convert so much gas effectively into stars in a very short time.
Starbursts may be the best local analogs to galaxies during their formation, with large amounts of both gas and stellar energy input present.
www.astr.ua.edu /keel/galaxies/starburst.html   (2367 words)

 Spaceflight Now | Breaking News | X-ray view into a starburst
Luminous starburst galaxies are where a lot of young stars are currently forming.
They come in two different varieties: starbursts where the star creation is spread evenly throughout the galaxy and those where it is concentrated at its nucleus.
Basically, starbursts are where stars are born, but what is being observed is in fact the X-ray emitting supernova remnants, the remains of massive stars that have exploded and whose expelled matter will eventually contract under gravity to be recycled into new ones.
spaceflightnow.com /news/n0101/31starburst   (907 words)

 Astronomy & Astrophysics research at Leicester University   (Site not responding. Last check: 2007-11-05)
Starburst galaxies have long been studied at optical and infrared wavelengths, but only since the era of the Einstein observatory has it been possible to study them in detail at X-ray energies.
The relative contributions from these components varies from galaxy to galaxy, and is a function of galaxy type, and evolutionary stage of the starburst.
In addition, we are also interested in the properties of more distant X-ray luminous starbursts, in order to understand the mechanisms by which such objects can emit up to 1000 times the X-ray luminosity of a typical starburst galaxy.
www.star.le.ac.uk /research/starburst.html   (170 words)

 [No title]   (Site not responding. Last check: 2007-11-05)
They find that starburst galaxies -- galaxies forming new stars at an extremely high rate -- were largely opaque to the UV radiation from hot newborn stars embedded within them.
Starburst galaxies appeared to be natural candidates for the generation of the ultraviolet background radiation.
Although each starburst galaxy is by far less bright than a quasar, there are many more starburst galaxies in the universe than quasars.
ecf.hq.eso.org /stecf-pr-images/95-28.txt   (394 words)

 Annual Review 2003: Astronomy and Astrophysics   (Site not responding. Last check: 2007-11-05)
A STARBURST model has been developed to follow the dynamical and physical evolution of Giant Molecular Clouds (solar masses) that are undergoing massive star formation (1000 solar masses per year).
In a recent study of the starburst galaxy NGC 1140, we have analysed CIRPASS near-infrared integral-field spectroscopy obtained at the Gemini-South telescope.
Overall, we conclude that a galaxy-wide starburst was induced by a merger event in the past 35-55 Myr.
www.phys.ucl.ac.uk /department/AnnRev2003/aanda.html   (8203 words)

 [No title]   (Site not responding. Last check: 2007-11-05)
Starburst galaxies are actually the product of two separate galaxies that collide.
Infrared astronomy is a key way of studying starburst galaxies because they are surrounded by dense clouds of dust and gas that make them invisible in optical telescopes.
One theory held that starburst galaxies are bright in the infrared because extremely rapid star formation is taking place in them.
www.jpl.nasa.gov /files/releases/starbrst.txt   (580 words)

 Spaceflight Now | Breaking News | Starburst eye of a galaxy produces a cosmic shower
The starburst galaxy M82 is one of the most studied objects in the sky.
Known as a starburst galaxy for the intense, bright clusters of young stars at its heart, M82 is also characterized by massive jets of hot gas -- tens of thousands of light years long -- that blast into intergalactic space perpendicular to the starry plane of the galaxy.
The emphasis of the new work, according to UW-Madison astronomer Jay Gallagher, was on the powerful high-temperature winds of M82 and using the Hubble and WIYN observations in combination to view the galaxy in a new way.
www.spaceflightnow.com /news/n0405/23starburst   (920 words)

 Starburst Galaxies   (Site not responding. Last check: 2007-11-05)
INAOE: 1996 Conference on Starburst Activity in Galaxies...
Starburst Eye of a Galaxy Produces a Cosmic Shower...
Spaceflight Now Breaking News Starburst eye of a galaxy produces a cosmic sh...
www.scienceoxygen.com /astronomy/102.html   (282 words)

 Starburst Eye of a Galaxy Produces a Cosmic Shower
This image is a color-coded picture of the archetypal starburst galaxy M82.
Known as a starburst galaxy for the intense, bright clusters of young stars at its heart, M82 is also characterized by massive jets of hot gas — tens of thousands of light years long — that blast into intergalactic space perpendicular to the starry plane of the galaxy.
NOAO is operated by the Association of Universities for Research in Astronomy (AURA), Inc. under cooperative agreement with the National Science Foundation.
www.noao.edu /outreach/press/pr04/uw-m0401.html   (620 words)

 A Galaxy Blazes With Star Formation
Starbursts were once thought to be brief episodes, resulting from catastrophic events like a galactic collision.
Scientists using NASA's Hubble Space Telescope are studying the colors of star clusters to determine the age and history of starburst galaxies, a technique somewhat similar to the process of learning the age of a tree by counting its rings.
It is one of several starburst galaxies, which are hotbeds of star formation, being studied by Dr. Gerhardt Meurer and a team of scientists at Johns Hopkins University, Laurel, Md. The picture was taken by Hubble's Wide Field and Planetary Camera 2.
www.spacedaily.com /news/stellar-01b.html   (1069 words)

 Active Galaxies Newsletter -- Issue51   (Site not responding. Last check: 2007-11-05)
We focus on the radiative flux force due to the circumnuclear starburst, the nuclear starburst and the active galactic nucleus (AGN), and analyze the equilibrium configuration and stability of the dusty gas in the circumnuclear regions.
Moreover, by using the simple stellar evolution in the circumnuclear starburst, the bolometric luminosity of the starburst is estimated as a function of time.
To conclude, the radiatively-supported gas walls could be responsible for the putative correlation between AGN type and the starbursts, whereby Seyfert 2 galaxies are more frequently associated with circumnuclear starbursts than type 1, whereas quasars are mostly observed as type 1 regardless of star-forming activity in the host galaxies.
axp0.ast.man.ac.uk /~rb/issue51   (4587 words)

 U of Toronto Astronomy Department Thesis Abstract
Comparisons with images at optical and infrared wavelengths imply that these ionized regions are also the sites of emission from very small grains (VSG's) and other tracers of ionizing radiation, but that the extinction towards the near-IR is still quite high in localized regions.
Since the integrated radio emission records an historical rate from sources that have already been dispersed into the ISM, the implication is that the supernova rate is decreasing over time and therefore the starburst in M82 in coming to an end.
This prediction is in agreement with other evidence from a consideration of star formation rates and the amount of available molecular material.
www.astro.utoronto.ca /theses/thesis99.allen.html   (644 words)

 Norbert Junkes: Publications
Tschöke, D.; Hensler, G.; Junkes, N.: An X-ray halo in the "hot-spot" galaxy NGC 2903, 2003, Astronomy and Astrophysics, 411, 41-53.
Junkes N., Zinnecker H., Hensler G., Dahlem M., Pietsch W.: NGC 1808: X-ray emission from the nuclear starburst, 1995, Astronomy and Astrophysics 294, 8.
Junkes, N.; Hensler, G. NGC 4569 X-Ray Observation of a Spiral Galaxy with Nuclear Starburst Activity, 1996, New light on galaxy evolution, IAU Symposium 171, p.
www.mpifr-bonn.mpg.de /staff/junkes/publications.html   (1608 words)

 SPACE.com -- Cosmologists Stretch to Explain Birth of Galaxies
In an article to be published in the October 1 issue of Astrophysical Journal Letters, Kolatt and his colleagues argue that their high-power models provide evidence that young galaxies are formed in brief but energetic bursts of star-forming activity.
Moreover, the number of starburst regions appears to be so great in that model of the early universe, that it appears to show that galaxies were not forming in the way predicted by the Central Quiescent theory, he said.
David Weinberg, a cosmologist in the astronomy department at Ohio State University, said his conclusions working with models of galaxy formation come down somewhere between the Central Quiescent and the Collisional Starburst models, but tend to be in closer agreement with the former.
www.space.com /scienceastronomy/astronomy/starburst_990921.html   (1177 words)

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