A team of scientists, including Professor Zvi Maza from the Department of Astrophysics at Tel Aviv University, discovered two new planets each moving around a double sun
A team of American scientists, including an Israeli scientist: Professor Zvi Maza from the Department of Astrophysics at Tel Aviv University, will report today (at 20:00 Israel time) on the discovery of two new planets, each moving around a double sun. The discovery is published in the new issue of The journal NATURE.
The discovery is based on precise measurements made by the American spacecraft "Kepler", which was sent to discover new planets around other suns in the universe. The new planets: Kepler 34 and 35, are about 5000 light years from us in the constellation Cygnus. Kepler 34 orbits its double Sun in 289 day cycles while Kepler 35 completes a cycle around the Sun in 131 days. The spacecraft team discovered the planets by examining the measured light intensity of these two double suns, which showed that the light intensity decreased in a cyclical pattern, a decrease indicating the existence of the planets moving around them.
Professor Maza explains: "Together with a previous planet that was discovered several months ago around a double sun - Kepler-16, we now already have three such known systems. We can estimate that such systems of two suns and a planet around them are common systems in the galaxy. The enormous importance of the discovery lies in the fact that most of the suns (stars) in the universe live in pairs, like humans. As if it were said about the stars - "It is not good for the star to be alone, I will help him against him".
"Life on such a planet can be very interesting. In some of the sunsets, one sun will set first and the hour "between the suns" will begin, and only then will the second sun set and the night will begin. Each sun moves around its partner in a regular cycle and therefore changes its distance from the planet, therefore the temperature on the surface of the planet in a system of two suns changes at a much faster rate than on our earth.
"Each star that is discovered is a new world that appears behind the horizon line and contains a piece of information in solving the puzzle of the creation and development of the planets" says Professor Zvi Maza. "However, the new discoveries are particularly exciting, due to the fact that they are so different from what we are used to on Earth. Many have tried to find planets around other glasses, but only recently, with the launch of the Kepler spacecraft and the precise data it provides, the new discoveries became possible."
18 תגובות
Nitzan (https://www.hayadan.org.il/planets-who-orbit-double-stars-120112/#comment-322600):
Of course it has an effect.
The relative movement of the suns will affect both the orbits of the planets, both the temperature that prevails in them (which will change according to the universe of the suns) and the tidal forces acting on them (just as on the earth a stronger tide is obtained when the sun, the moon and the earth are on the same straight line ).
Yehuda (https://www.hayadan.org.il/planets-who-orbit-double-stars-120112/#comment-322632):
Science fiction has not been ahead of the reality that has been happening for millions of years.
To be honest, he was not ahead of science either - he could simply fantasize about things while science needs confirmation before he declares that something that can exist according to the theory actually exists.
a (https://www.hayadan.org.il/planets-who-orbit-double-stars-120112/#comment-322704):
Yes.
See what I wrote to the bud
No'
In general it can be said that gravitational phenomena such as tides will be in both the suns and the planets and their intensity with reference to the position of the stars.
Shabbat Shalom
Sabdarmish Yehuda
Can the gravitational forces of the suns cause a change in gravity on the surface of the planet, in such a way that a body can change its weight in accordance with the rotation of the planet around the suns?
In fact, as happens on Earth, tides and ebbs
There is also 55 in Cancer - a double star with five planets. Maybe it means the 3 systems that Kepler discovered.
Regarding gravity drainage - according to my data http://exoplanet.eu/catalog.php (Paris Observatory) Of the 721 confirmed exoplanets, 13 have been discovered by gravitational micro-dispersion.
to fill
What will happen is that he will stand in the center and it will look as if they are both revolving around him
But as I already said
It doesn't have to be that the two stars have the same mass and not just between them. There are five points at which a transiting planet can stand and they are called La Grange points.
Good Day
Sabdarmish Yehuda
From Wikipedia:
First of all, planetary transits are only observable for planets whose orbits happen to be perfectly aligned from the astronomers' vantage point. The probability of a planetary orbital plane being directly on the line-of-sight to a star is the ratio of the diameter of the star to the diameter of the orbit. About 10% of planets with small orbits have such alignment, and the fraction decreases for planets with larger orbits. For a planet orbiting a sun-sized star at 1 AU, the probability of a random alignment producing a transit is 0.47%. Therefore the method cannot answer the question of whether any particular star is a host to planets.
Does anyone have an estimate of the percentage of planets that can be discovered using the Idaush method? After all, the planet needs to be in the same plane as the mother planet and a sphere. Is it possible that it is a promil or is it a high percentage?
just a question
What will happen if a star stands in the middle between the two suns of the same mass and size?
Nitzan
There are indeed five points where there is a possibility that planets will get stuck. These points are called La Grange points.
Additionally
Has anyone read the book "Solaris" by Stanislav Lem?, where there is a description of a planet called Solaris revolving around two suns, one blue and one red. Science fiction has always been ahead of reality.
Good night
Sabdarmish Yehuda
There is never a visualization when needed
I wonder how the gravitational forces of the two suns affect the planet, after all there is some point where the two gravitational fields meet and something like that should have an effect in some way, right?
To Roy - it's a matter of semantics. Any two interacting bodies revolve around a point that is between them (even if it is inside one of them) and adding more stars makes the matter more complex but does not contradict the principle. The planets travel in an orbit that is the product of all the influences on them - Jupiter also affects the Earth's orbit, only very slightly. If there was a small sun in its place then it would be more influential, and we would be 'holidays around both' to a certain extent
What is the distance between the suns, does anyone know?
To Yuval,
I don't think you're right... it's not the same thing... Jupiter works according to the sun's gravity and so do the other planets that follow it... while here it's a double star that has a kind of imaginary center of mass that they circle around it in such a beautiful dance... and the planets circle around This same dance...so it's not the same in my opinion.
For a colleague, imagine that Jupiter is a small sun and its moons are planets, such a system is possible.
Were there also cases where the suns were further away, surrounded each other, but each sun also had an independent planetary system?
to anonymous,
Actually, it's not such a big deal. One can imagine something similar even in our star system. If the planet Jupiter, for example, was itself a star like the sun, then all the planets outside of it, from Saturn onwards, would revolve around two suns.
Such a thing should be advertised in prime time