Astronomy Debris-strewn Exoplanetary Construction Yards

Astronomy Debris-strewn Exoplanetary Construction Yards
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  pdfcrowd.comopen in browserPRO version Are you a developer? Try out the HTML to PDF API Featured Research from universities, journals, and  other organizations Date:Source:Summary: November 6, 2014Space Telescope Science Institute (STScI)Over the past few years, astronomers have found an incredible diversityin the architecture of exoplanetary systems, as well as the planetsthemselves. A survey using the sharp view of the Hubble SpaceTelescope has uncovered a similar diversity in the debris systems thatcoincide with the formation of exoplanets. These circumstellar dustydisks are likely generated by collisions between objects left over fromplanet formation around stars. The survey's results suggest that there is some sort of interdependence between a planet and the accompanying debris system. Share This  Astronomy: Debris-strewn exoplanetary construction yards Save/Print :                  Share : Breaking News: Comet Flyby Effects On Martian Atmosphere   Email to a friend   Facebook   Twitter    LinkedIn   Google+   Print this page  Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins Mobile :   iPhone    Android    Web Follow :   Facebook    Twitter     Google+ Subscribe :   RSS Feeds    Email Newsletters  HEALTHPHYSICAL/TECHENVIRONMENTSearch Enter keyword or phrase ... QUIRKYSOCIETY/EDUCATION Biology Research Reagents 17000+ Protein,Antibodies,Kits,cDNA Premium Quality at Affordable Price  pdfcrowd.comopen in browserPRO version Are you a developer? Try out the HTML to PDF API Credit: NASA, ESA, G. Schneider (University of  Arizona), and the HST/GO 12228 Team [Click to enlarge image]  A Related Articles This is a set of images from a NASA Hubble Space Telescope survey of thearchitecture of debris systems around young stars. Ten previously discovered ...[show more] stronomers using NASA's Hubble Space Telescope have completedthe largest and most sensitive visible-light imaging survey of dustydebris disks around other stars. These dusty disks, likely created bycollisions between leftover objects from planet formation, were imagedaround stars as young as 10 million years old and as mature as more than 1billion years old. It's like looking back in time to see the kinds of destructive events that once routinely happened in our solar system after the planets formed, said surveyleader Glenn Schneider of the University of Arizona'sSteward Observatory. The survey's results appeared inthe Oct. 1, 2014, issue of The Astronomical Journal  .Once thought to be simply pancake-like structures, theunexpected diversity and complexity and varyingdistribution of dust among these debris systemsstrongly suggest these disks are gravitationally affected Related Topics Space & Time Related Stories Astronomical ForensicsUncover Planetary Disks inNASA's Hubble Archive  Apr. 24, 2014 — Astronomers usingNASA's Hubble Space Telescopehave applied a new image processingtechnique to obtain near-infrared scattered lightphotos of five disks observed around young stars inthe ...    full story  Cosmic Dust Belts Without Dust July 8, 2013 — Planets and asteroids, red giantsand brown dwarfs – there are all kinds of objects inour Universe. Debris disks are among them. Theseare belts consisting of countless dust particles and...    full story  Evidence of Asteroid BeltAround Vega Jan. 8, 2013 — Astronomers havediscovered what appears to be alarge asteroid belt around the star Vega, the second brightest star in northern nightskies. The discovery of an asteroid belt-like band of debris ...    full story  A Planetary System from theEarly Universe Mar. 27, 2012 — Astronomers havediscovered an ancient planetarysystem that is likely to be a survivor from one of the earliest cosmic eras, 13 billionyears ago. The system consists of the star HIP11952 and two ...    full story  Stardust Discovered in Far-Off Planetary Systems Sep. 29, 2011 — Searching for extra-solar planets -- which are planets Extrasolar planet  Spitzer space telescope  Definition of planet  Saturn  Uranus' natural satellites  Hubble Deep Field  Extrasolar Planets  Stars   Astronomy   Astrophysics  Pluto  Galaxies   pdfcrowd.comopen in browserPRO version Are you a developer? Try out the HTML to PDF API by unseen planets orbiting the star. Alternatively, theseeffects could result from the stars' passing throughinterstellar space.The researchers discovered that no two disks of material surrounding stars look thesame. We find that the systems are not simply flat with uniform surfaces, Schneider said. These are actually pretty complicated three-dimensional debris systems, oftenwith embedded smaller structures. Some of the substructures could be signposts of unseen planets. The astronomers used Hubble's Space Telescope ImagingSpectrograph to study 10 previously discovered circumstellar debris systems, pluscomparatively, MP Mus, a mature protoplanetary disk of age comparable to theyoungest of the debris disks.Irregularities observed in one ring-like system in particular, around a star called HD181327, resemble the ejection of a huge spray of debris into the outer part of thesystem from the recent collision of two bodies. This spray of material is fairly distant from its host star -- roughly twice the distancethat Pluto is from the Sun, said co-investigator Christopher Stark of NASA's GoddardSpace Flight Center, Greenbelt, Maryland. Catastrophically destroying an object thatmassive at such a large distance is difficult to explain, and it should be very rare. If weare in fact seeing the recent aftermath of a massive collision, the unseen planetarysystem may be quite chaotic.  Another interpretation for the irregularities is that the disk has been mysteriouslywarped by the star's passage through interstellar space, directly interacting withunseen interstellar material. Either way, the answer is exciting, Schneider said. Our team is currently analyzing follow-up observations that will help reveal the true cause of the irregularity. Over the past few years astronomers have found an incredible diversity in thearchitecture of exoplanetary systems -- planets are arranged in orbits that aremarkedly different than found in our solar system. We are now seeing a similar diversity in the architecture of accompanying debris systems, Schneider said. Howare the planets affecting the disks, and how are the disks affecting the planets? Thereis some sort of interdependence between a planet and the accompanying debris thatmight affect the evolution of these exoplanetary debris systems. From this small sample, the most important message to take away is one of diversity,Schneider said. He added that astronomers really need to understand the internal andexternal influences on these systems, such as stellar winds and interactions withclouds of interstellar material, and how they are influenced by the mass and age of theparent star, and the abundance of heavier elements needed to build planets.Though astronomers have found nearly 4,000 exoplanet candidates since 1995, mostlyby indirect detection methods, only about two dozen light-scattering, circumstellar debris systems have been imaged over that same time period. That's because thedisks are typically 100,000 times fainter than, and often very close to, their brightparent stars. The majority have been seen because of Hubble's ability to perform high- Strange & Offbeat Stories ouse o our soar sysem -- s verypopular these days. About 700 planets are knownat the moment, a number that is continuously risingdue ...    full story    Space & TimeMatter & Energy more related stories  Mystery Sea of Stars? Rocket Experiment FindsSurprising Cosmic Light   Astronomy: Debris-Strewn ExoplanetaryConstruction Yards  Synthetic Biology for Space Exploration  Sustainability, Astrobiology Illuminate Future of Life in the Universe and Civilization on Earth  Space Enthusiasts Are Being Given the RareOpportunity to Name a Planet  Maybe It Wasn't the Higgs Particle After All  Images of a Nearly Invisible Mouse  Cockroach Cyborgs Use Microphones to Detect,Trace Sounds   pdfcrowd.comopen in browserPRO version Are you a developer? Try out the HTML to PDF API MLAAPAChicago Space Telescope Science Institute (STScI). Astronomy: Debris-strewnexoplanetary construction yards. ScienceDaily. ScienceDaily, 6 November 2014.<>.   contrast imaging, in which the overwhelming light from the star is blocked to reveal thefaint disk that surrounds the star.The new imaging survey also yields insight into how our solar system formed andevolved 4.6 billion years ago. In particular, the suspected planet collision seen in thedisk around HD 181327 may be similar to how the Earth-Moon system formed, as wellas the Pluto-Charon system over 4 billion years ago. In those cases, collisionsbetween planet-sized bodies cast debris that then coalesced into a companion moon. Story Source: The above story is based on materials provided by Space Telescope ScienceInstitute (STScI) . Note: Materials may be edited for content and length. Journal Reference :1. Glenn Schneider, Carol A. Grady, Dean C. Hines, Christopher C. Stark, John H.Debes, Joe Carson, Marc J. Kuchner, Marshall D. Perrin, Alycia J. Weinberger,John P. Wisniewski, Murray D. Silverstone, Hannah Jang-Condell, ThomasHenning, Bruce E. Woodgate, Eugene Serabyn, Amaya Moro-Martin, MotohideTamura, Phillip M. Hinz, Timothy J. Rodigas. PROBING FOR EXOPLANETSHIDING IN DUSTY DEBRIS DISKS: DISK IMAGING, CHARACTERIZATION, ANDEXPLORATION WITHHST/STIS MULTI-ROLL CORONAGRAPHY . The Astronomical Journal  , 2014; 148 (4): 59 DOI: 10.1088/0004-6256/148/4/59 Cite This Page : In Other News Computers & Math ... from Science NewsHealth News Manipulating Complex Molecules by Hand  Clearing a Path for Electrons in Polymers:Closing in on the Speed Limits  Direct Brain Interface Between Humans  How a Giant Impact Formed Asteroid Vesta's'Belt'  Dance Choreography Improves Girls'Computational Skills  Planet Discovered That Won't Stick to a Schedule  Game Technology Can Make Emergency RobotsEasier to Control  U.S. OKs genetically modified potato with lower cancer risk   Acoustic warfare: bats jam each other's sonar while bug hunting  Passing comet peppered Mars with shootingstars, scientists say  Scientist hopes to unlock Ebola's secrets atoutbreak's source  UK space travel insurer sees no spike in queriesafter Virgin crash  Nurse who fought Maine Ebola quarantine moving  
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