Sentences with phrase «by debris disks»
Another implication of the find, Lagrange says, is that «stars surrounded by debris disks are really good places to look for planets.»
http://www.sciencemag.org/ Not exact matches
Most likely, Meech says, the object is an outcast from another star system: a space rock flung out during the star's tempestuous youth when it was surrounded by freshly - formed giant planets embedded in a disk of debris.
But a feeding black hole is surrounded by a whirling, white - hot disk of glowing debris — material heated to millions of degrees as it spirals down to oblivion.
These «debris disks» are constantly fed by collisions among rocky bodies — the larger of which can survive and grow by continued accretion — because the tiny dust grains quickly fall onto the central star or get blown out of the planetary system.
«Over the past decade, we have learned that remnants of planetary systems around white dwarfs are ubiquitous, and over thirty debris disks have been found by now.
The question is whether the bodies were asteroids captured intact by Mars gravity or whether the tiny satellites formed from an equatorial disk of debris, as is most consistent with their nearly circular and co-planar orbits.
When he and his advisor simulated the early impact, they did not see a young Earth surrounded by a disk of debris.
The gravitational interactions created in the outer disk by this massive star apparently acted as a catalyst for the gathering of debris to form other smaller, more distant moons.
«This discovery was puzzling since astronomers believe that this gas should be long gone by the time we see evidence of a debris disk,» he said.
Team leader Mauri Valtonen of the University of Turku in Finland used equations derived from Einstein's theory of general relativity to show that the pulses could be caused by a small, orbiting black hole plunging into the debris disk around the larger one, situated at one end of the orbital ellipse.
They found that the disk of debris around the black hole smothers all but the highest energy radiation and thus renders the black holes undetectable by optical telescopes.
Disks of gas and dust, interstellar debris, comet swarms or even black holes are some of the exotic potential explanations considered by theorists.
«This is the first full 3 - D model of a debris disk where we can watch the development of asymmetric features formed by planets, like warps and eccentric rings, and also track collisions among the particles at the same time.»
Whatever their origin, the planemos are surrounded by disks of rocky debris, suggesting that they each may be at the center of a whole miniature system of planets circling planets.
These disks are made up of the debris left behind by all the collisions during planet formation and by subsequent collisions of the newly formed planets.
«Orbital Stability of High Mass Planets & Implications for Debris Disk Systems» by Sarah Morrison, grad student, LPL
This talk will focus on our new discoveries with VLT / SPHERE of a beautiful two - armed spiral disk with a large gap (the third known of its kind) and an edge - on warped debris disk — similar to the warp induced by the planet in Beta Pic.
EOS talk: «Extreme - AO Imaging of Disks around Intermediate - Mass Stars: Discovery of a Two - Armed Spiral Disk and a Warped Edge - on Debris Disk» by Kevin Wagner, grad student, Steward Observatory
Abstract: We present $ H$ - band scattered light imaging of a bright debris disk around the A0 star HD 36546 obtained from the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) system with data recorded by the HiCIAO camera using the vector vortex coronagraph.
Most galaxies in the observable universe contain a supermassive black hole at their center, one that is either active and surrounded by an accretion disk of dust, gas and other debris, or is dormant — lurking at the center, patiently awaiting its next meal.
Observations of star systems by an international group of researchers suggest that debris disks around stars may be indicative of giant exoplanets.
Given that Tau Ceti does not appear to be a young star, the ring of dusty debris is believed to be produced by collisions between larger comets and asteroids that break them down into smaller and smaller pieces, and Tau Ceti's disk is similar in size and shape to the disk of comets and asteroids that orbits the Sun, Sol.
Infrared interferometric observations of Denebola's debris disk were used by Akeson et al (2009) to model two possible bands of dust beginning around 0.13 AU (and extending for 0.3 AUs) and around 13 AUs (extending for 6.2 AUs).
Led and funded by NASA, the project gives astronomy hobbyists a chance to help classify debris disks among a huge collection of interstellar images collected by NASA's WISE mission [source: DiskDetective.Org].
We gave an update on the GPI Exoplanet Survey, presented posters on debris disks and exoplanets imaged by GPI, and even had a press conference on recent GPI results!
Zachary H. Draper, Gaspard Duchêne, Maxwell A. Millar - Blanchaer, Brenda C. Matthews, Jason J. Wang, Paul Kalas, James R. Graham, Deborah Padgett, S. Mark Ammons, Joanna Bulger, Christine Chen, Jeffrey K. Chilcote, René Doyon, Michael P. Fitzgerald, Kate B. Follette, Benjamin Gerard, Alexandra Z. Greenbaum, Pascale Hibon, Sasha Hinkley, Bruce Macintosh, Patrick Ingraham, David Lafrenière, Franck Marchis, Christian Marois, Eric L. Nielsen, Rebecca Oppenheimer, Rahul Patel, Jenny Patience, Marshall Perrin, Laurent Pueyo, Abhijith Rajan, Julian Rameau, Anand Sivaramakrishnan, David Vega, Kimberly Ward - Duong, Schuyler G. Wolff (2016) The Peculiar Debris Disk of HD 111520 as Resolved by the Gemini Planet Imager, The Astrophysical Journal, Volume 826, Issue 2, article id.