Sentences with phrase «for debris disks»

Kuchner has also led a citizen science project called Disk Detective that allows users to scan WISE images for debris disks that could provide clues to planetary formation.

The most favorable stars for disk detection are those with spectral types between A and K, while the statistics for debris disks detected around low - mass M - type stars is very low, either because they are rare or because they are more difficult to detect.

Though long hypothesized, the first evidence for a debris disk around any star was uncovered in 1983 with NASA's Infrared Astronomical Satellite.

«Orbital Stability of High Mass Planets & Implications for Debris Disk Systems» by Sarah Morrison, grad student, LPL

They had to wait until the early 1980s for the first observational evidence for a debris disk around any star to be uncovered.

Not exact matches

They are the natural end state of the collapse of a rotating cloud of debris, and as such, they are the closest analogue to the rubble disk we think provided the raw ingredients for our own solar system.

This chart compares the gas mass for several debris disk systems and shows where the photoelectric instability is most important.

«All we need to produce narrow rings and other structures in our models of debris disks is a bit of gas, too little for us to detect today in most actual systems,» said co-author Marc Kuchner, an astrophysicist at NASA's Goddard Space Flight Center in Greenbelt, Md..

«We knew about these debris disks around white dwarfs for over twenty years, but have only now been able to obtain the first image of one of these disks,» says Mr Manser.

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.

If certain debris disks are able to hold onto appreciable amounts of gas, it might push back astronomers» expected deadline for giant planet formation around young stars, the astronomers speculate.

Another implication of the find, Lagrange says, is that «stars surrounded by debris disks are really good places to look for planets.»

Rieke's plans for JWST investigations include imaging nearby debris disks deeply enough to detect young ice giant planets to understand how they sculpt debris disks, and obtaining multiple epoch infrared spectra of variable disks.

For example, a large impact would create an enormous disk of debris, and while this would feed the creation of more massive moons, smaller bodies would likely be unable to coalesce.

Ongoing radio observations (SMA, JCMT, VLA) of Sirius A are being used to set an observationally determined standard for stellar atmosphere modeling and debris disk studies around A stars, as well as to take the first step toward characterizing potential intrinsic uncertainty in stellar emission at these wavelengths.

Young stars that are from a few million to one billion years old and appear to have a disk of dust and debris orbiting them may be the best place to look for giant exoplanets.

(4) Does the «typical» circumstellar disk states of primary star + Kuiper Belt Star show evidence for material from each of the different kinds of small outer solar system bodies (Comets, Centaurs, KBOs) like the active comet debris in HR4796A and the icy KBO debris in Fomalhaut and HD 32297?

The paper suggests that when astronomers are looking for these giant exoplanets, they should concentrate on looking at young star systems that have debris disks around them.

These circumstellar disks are common around newborn stars, and provide the raw materials for planets, which are formed as a result of accretion of dust and debris left over from the star's birth.

Of the 130 stars with known debris disks, 100 had been previously observed and scanned for exoplanets.

There has been no shortage of proposed explanations that have been put forth in order to account for the unusual observations, from the more mundane ones which include the presence of cometary fragments and large disk of debris from planetary collisions within the star system, to the more imaginative and fascinating ones which have invoked the presence of an extraterrestrial super-civilisation that is in the process of constructing gigantic megastructures around the star itself.

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).

About half of the new debris disks are close enough to the Sun that they are potential targets for imaging with coronagraphs to search for extrasolar planets that could be lurking within them.

A new mechanism to produce the dust in the presented debris disks, deviations from the conditions required for a standard equilibrium collisional cascade (grain size exponent of -3.5), and / or significantly different dust properties would be necessary to explain the potentially steep SED shape of the three debris disks presented.

Independent of the interpretation for HD 61005, we expect that interstellar gas drag likely plays a role in producing asymmetries observed in other debris disk systems, such as HD 15115 and Delta - Velorum.

The outer disk is revealed in reprocessed archival Hubble Space Telescope NICMOS F110W images, as well as new coronagraphic H band images from the Very Large Telescope SPHERE instr... ▽ More We present the first scattered - light images of the debris disk around 49 ceti, a ~ 40 Myr A1 main sequence star at 59 pc, famous for hosting two massive dust belts as well as large quantities of atomic and molecular gas.

As far as habitability goes, the researchers themselves point out another problem: due to the massive debris disk surrounding tau Ceti, the outer two planets are likely subject to intense bombardment via comets and asteroids, which would pose obvious issues for life.

As part of an effort to identify distant planets hospitable to life, NASA has established a crowdsourcing project in which volunteers search telescopic images for evidence of debris disks around...