Sentences with phrase «multiple star system»
The findings help researchers understand how multiple star systems can influence the development and fate of planets.
astrobio.net
Planets can form in multiple star systems, but the gravity of the additional stars can hurl planets into their parent star, says John Chambers of the Carnegie Institution for Science, based in Washington DC.
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.
The simulations use a Smoothed Particle Hydrodynamic code, called VINE, to model a configuration based on the observed «GG Tau A» system, one of the best studied forming multiple star systems in the sky.
Astronomers Ben Zuckerman and Inseok Song of the University of California (UC), Los Angeles, and their colleagues describe 17 single and multiple star systems moving through space with Beta Pic, at an average distance of just 100 light - years from Earth.
«We found that some of the signals were caused by multiple star systems or noise from the spacecraft.
Galaxies can also contain many multiple star systems, star clusters, and various interstellar clouds.
The Sun is only a star in our solar system, but in the universe many stars form binary or multiple star systems where two or more stars orbit each other.
«This result strengthens the connection between multiple star systems and massive planets,» said Roberts.
«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.
I dabbled a little bit in Stellar Forge when we first started using multiple star systems and it's amazing the amount of details we have in there.
He says the finding is «definitely an intriguing result,» because it «shows that our understanding of the birth and early evolution of multiple star systems is far from complete.»
Writing in the current issue of Nature, first author Jaime Pineda of the Institute for Astronomy at ETH Zurich, with others in England and the United States, say understanding why and how multiple star systems form is essential for grasping phenomena such as star and planet formation, planet frequency and habitability.
This red star is a member of a multiple star system also included in the DARTTS - S sample but, oddly, this new disc appears to be more evolved than the gas - rich disc around the T Tauri star in the same system, although they are the same age.
Not only did the researchers succeed in observing the formation of a multiple star system from a fragmented gas cloud for the first time; it is also unusual how quickly the system is forming.
«Multiple star systems are very common in our galaxy,» says Michael Meyer, professor at the Institute for Astronomy at ETH Zurich.
«In a first, astronomers catch a multiple star system in the process of forming.»
There are competing models for how multiple star systems are born, but now we know a little more than we did before.»
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-
However, even if a planet was formed around such a multiple star system, it could spin out of its system due to the instability of the orbit.
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.
This «AB» designation denotes the apparent gravitational centre of the main binary system relative to other companion star (s) in any multiple star system.
Recently, two teams of astronomers using the Atacama Large Millimeter / submillimeter Array (ALMA) have found traces of the organic molecule methyl isocyanate around a multiple star system about 400 light - years from Earth known as IRAS 16293 - 2422.
Multiple star systems, like Alpha Centauri, were long neglected in the search for potentially habitable planets.
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.