Sentences with phrase «multiple star systems»

«This new work directly supports the conclusion that there are two mechanisms that produce multiple star systems — fragmentation of circumstellar disks, such as we see here, and fragmentation of the larger cloud of gas and dust from which young stars are formed,» said John Tobin, of the University of Oklahoma and Leiden Observatory in the Netherlands.

Confirming previous modelling of multiple star systems with relatively wide orbits such as the Alpha Centauri system, the RECONS astronomers found that Alpha Centauri A and B orbit in such a way that when the light and heat of the two stars was combined, neither star in the innermost AB system significantly changed the size of their respective habitable zones, regardless of where each was currently located in its orbit.

«This result strengthens the connection between multiple star systems and massive planets,» said Roberts.

Multiple star systems, like Alpha Centauri, were long neglected in the search for potentially habitable planets.

And, I said earlier that planetary orbits get unstable in multiple star systems, but in recent observations, it has been found that some multiple star systems also have planets.

John Tobin, from the University of Oklahoma and Leiden Observatory in the Netherlands shared that this new work supports the conclusion of having two mechanisms that can form multiple star systems - fragmentations of circumstellar disks like the one just observed, or the fragmentation of the larger clouds of gas and dust, many of which young stars are from.

The reseachers also examined combinations of those two scenarios for multiple star systems — for example, where two tightly orbiting stars are gravitationally bound to a more distant star.

There are competing models for how multiple star systems are born, but now we know a little more than we did before.»

«Multiple star systems are very common in our galaxy,» says Michael Meyer, professor at the Institute for Astronomy at ETH Zurich.

Galaxies can also contain many multiple star systems, star clusters, and various interstellar clouds.

«We found that some of the signals were caused by multiple star systems or noise from the spacecraft.

«In a first, astronomers catch a multiple star system in the process of forming.»

Artist's impression of Kepler - 13Ab orbiting its parent star, Kepler - 13A — the planet orbits in a multiple star system

Artist's impression of Kepler - 13Ab orbiting its parent star, Kepler - 13A — the planet orbits in a multiple star system (Credit: NASA, ESA, and G. Bacon (STScI)-RRB-

Most of these multis are multiple planet systems orbiting the Kepler target star, but there are likely cases where (a) the planetary system orbits a fainter star, and the planets are thus significantly larger than has been estimated, or (b) the planets orbit different stars within a binary / multiple star system.

This «AB» designation denotes the apparent gravitational centre of the main binary system relative to other companion star (s) in any multiple star system.

A summary with more information on the history of astronomical investigations into this multiple star system from 1780 to recent years can found in R. F. Griffin (1998).

Initial, space - based parallax measurements by the HIPPARCOS Mission proved to be «confused» by the short - period («curious epicyclic») motions of this multiple star system (R. F. Griffin, 1998).

This multiple star system is located about 29.3 light - years (ly) away from our Sun, Sol.

One interesting nearby, multiple star system that appears to lack Hipparcos parallax altogether — that is not even listed in the Tycho catalogue — is Alula Australis, or Xi Ursae Majoris.

Not exact matches

The system allows Twitch stars to cash out in multiple ways including via cash, pre-paid cards, vouchers, and checks.

The researchers believe the presence of multiple stars in a system could be a clue as to how planets finally settle into their orbits.

The fully trained neural network examined 670 star systems known to host multiple planets to see whether previous searches had missed anything.

Kepler - 11 By 2010 astronomers had discovered 54 stars hosting multiple planets, yet none of these planetary systems much resembled our own.

That same year the MMT Observatory in Arizona (shown) tested a system that uses a powerful green laser to create multiple artificial stars using Rayleigh scattering in the lower atmosphere.

At least two other facilities are pursuing adaptive - optics systems that employ multiple guide stars.

Astronomers say that planet - forming clouds may be common around multiple - star systems.

Astronomers have confirmed nearly 2000 exoplanets so far, and the evidence suggest many stars host multiple planets, just like our own solar system.

In the background is the star's binary companion, Kepler - 13B, and the third member of the multiple - star system is the orange dwarf star Kepler - 13C.

And in the future, a technique called optical interferometry, which links together the observations of more than one telescope, might make it possible to see the multiple lensed images produced by the planets of another star system.

The one thing they turn out to have in common — and this is still not completely appreciated — is that in solar systems with multiple planets, these multiple planets fill all the gravitationally stable niches around the star.

This week an international team of astronomers reports the first multiple - star system to be observed during the earliest stage of formation.

On the other hand, scientists who analyse multiple systems usually tend to focus more on the end result of the star formation.

While multiple - planet systems tend to have circular orbits that all lie in the same plane — like our solar system — the orbits of singletons tend to be more elliptical and are often misaligned with the spins of their stars.

The presence of atmospheric water was reported previously on a few exoplanets orbiting stars beyond our solar system, but this is the first study to conclusively measure and compare the profiles and intensities of these signatures on multiple worlds.

The artist concept depicts multiple - transiting planet systems, which are stars with more than one planet.

A well - known eclipsing binary makes up part of Algol, a multiple - star system in the constellation Perseus.

His theoretical work focuses on the formation of binary and multiple stars, triggered collapse of the presolar cloud that eventually made the Solar System, mixing and transport processes in protoplanetary disks, and the formation of gas giant and ice giant protoplanets.

More than half of all known stars belong to binary systems or to multiple - star systems containing binary stars.

A star with multiple planets around it is gravitationally stable, according to the theory, while a star that is part of a close - knit system of stars would have a more unstable system because of each star's massive gravity.

Since a quite number of stars have multiple planets in their own system, I naturally think there might be a quite number of planets with life.

While star system Proxima Centauri is a more sensible choice for an interstellar voyage, since it also contains a rocky, habitable - zone planet and is much closer to Earth (4.22 light years away), the opportunity to find life on multiple worlds in the TRAPPIST - 1 system increases its chances of a visit someday.

Examining each Kepler system individually considering multiple avenues (isochrone mapping, contrast curves, probability of being bound), we suggest two cases for which the techniques most likely agree in their companion detections (detect the same companion star).

The chance to study an actual ejection of a star from a multiple system can provide a critical test for the dynamical theories.

The scientists analyzed VLA observations of T Tauri, a multiple system of young stars some 450 light - years from Earth.

If Kepler observations were extended to eight years, then a similar analysis could likely confirm systems with multiple closely spaced, small transiting planets in or near the habitable zone of solar - type stars.

Phys.org reported that for the first time, they were able to see a dusty disk of material around a young star that is the beginning of the formation of a multiple - star system.

Seen in the background is the star's binary companion, Kepler - 13B, and the third member of the multiple - star system is the orange dwarf star, Kepler - 13C.

Alpha Centauri is a multiple - star system, with its two main stars being Alpha Centauri A (α Cen A) and Alpha Centauri B (α Cen B), usually defined to identify them as the different components of the binary α Cen AB.

Astronomers analyzing nearly 20 years of data from the National Science Foundation's Very Large Array radio telescope have discovered that a small star in a multiple - star system in the constellation Taurus probably has been ejected from the system after a close encounter with one of the system's more - massive components, presumed to be a compact double star.