Double stars are also called Lianxing, which is a word coined by Herschel, the first president of the Royal Astronomical Society of England.

Joint stars refer more to binary stars with physical correlation, and the two stars orbit each with a common mass center in their orbit.

Like Yang Yiyi said, Awkward and Vega are not joint stars.

The boss Herschel also discovered Uranus and its two satellites through a large reflective telescope designed by himself, and compiled the first binary and star-gathering table.

So, when Chen Zhou and his friends searched for documents, they thought of this person first.

The three of them searched for the required documents according to their respective goals.

[In a binary star system, the gravity of one star is provided by another star, and vice versa. The ratio of their centripetal acceleration is the inverse ratio of their mass...]

Chen Zhou took out the draft paper and recorded the message.

From this, the ratio of centripetal acceleration of the binary star system in the question can be directly derived.

[The planets move in a uniform circular motion around the star. The distance of gravity is exactly the orbital radius of the planet's circular motion. However, the distance of gravity in a binary star system is different from the orbital radius of the binary star motion. In a binary star system, two stars make a circular motion in a binary star system.

The angular velocity and period during movement are necessarily the same. The ratio of their linear velocity to the radius of the orbits in which they operate...]

Yang Yiyi also recorded the corresponding element information while searching.

9 pm.

Chen Zhou, Yang Yiyi, and Fang Jieming began to summarize the information they collected.

Afterwards, Chen Zhou began to assist Yang Yiyi in conducting relevant theoretical analysis.

Fang Jieming walked aside and prepared to rest.

For him, what he needs to do now is to ensure a rest, and his working hours are not yet up.

"There is too little information on this question, and even the key factors are incomplete." Yang Yiyi said.

Chen Zhou also frowned, then stretched out, and said with a smile: "It doesn't matter, follow the information we found. This can be regarded as a test of the event itself."

Yang Yiyi nodded, pointed at the recorded information with her pen, and analyzed: "There are 5 types of orbits around binary stars, namely large peripheral orbits, small peripheral orbits, eccentric peripheral orbits, complex peripheral orbits and internal orbits."

"The large peripheral orbit is the simplest of the orbits of a planet around a binary star, because the planet is very far away from the binary star, so that the gravity from the binary star will be similar to a star with mass after both of them. In this case, the planet will

Orbiting binary stars simultaneously along a general elliptical orbit.”

Chen Zhou thought for a while and said, "This situation is indeed the simplest, but such a planet will be very far away from the center of mass of the binary stars."

"Yes." Yang Yiyi continued, "among them, there are also needs to consider the direct and retrograde problems of planets..."

Speaking of this, she looked up at Chen Zhou and said, "In addition to the analysis of other orbitals, the calculation amount is very large. I want to share the burden for you."

Chen Zhou looked at Yang Yiyi, hesitated for a moment, and nodded slowly.

Seeing Chen Zhou agreeing, Yang Yiyi smiled.

The two continued to analyze the orbit of the planet around the binary stars.

After stripping the cocoon, the physical principles are basically clarified.

Next is the time for theoretical calculation.

Chen Zhou raised his hand and looked at the time. It was already one o'clock in the morning.

The sound in the computer room was not as noisy as it was at the beginning.

Many people lay on the computer desk and started to sleep.

Chen Zhou turned his head and looked at Fang Jieming, who was also lying on the computer desk, and smiled slightly.

Yang Yiyi also turned her head and looked at the senior who seemed to be asleep.

Regarding the calculation of the binary star orbit, Chen Zhou handed over the large peripheral orbit and the small peripheral orbit to Yang Yiyi, and reminded him: "Don't force yourself, go to sleep for a while if you are sleepy. Don't worry, leave the problem to me.

Let's solve it."

Yang Yiyi nodded slightly.

[A planet that orbits around a binary star with a high eccentricity retrograde elliptical orbit has an orbital period of about 12.5 times, and the farthest distance will reach 10 times the distance between the binary star. The elliptical orbit will orbit along the same direction of the planet's revolution.

The core of the double stars drifts...]

Chen Zhou started from the eccentric peripheral track and gradually entered the state.

Analyze problems, ask questions, and solve problems.

The idea has no sense of barrier and the calculation is very smooth.

After the problem of eccentric peripheral tracks was solved, Chen Zhou did not rush to solve the problem of complex peripheral tracks.

Instead, he thought about the issue of planets direct and retrograde as Yang Yiyi mentioned earlier.

He held a pen and habitually lit the draft paper.

"Stability?" Chen Zhou thought of this word.

Since the binary star system is called a system, it is that the two stars are operating stably around the common mass center in their respective orbits.

Therefore, how to maintain this stability after a planet is inserted is the key to the problem.

Ultimately, the ultimate goal of this question is the stable coexistence of binary systems and planets.

Chen Zhou glanced at Yang Yiyi and patted her gently.

Yang Yiyi stopped the pen in her hand and looked up at Chen Zhou in confusion.

Chen Zhou said: "Yiyi, we need to solve the problems of planets direct and retrograde first, so that unnecessary calculations can be reduced."

Yang Yiyi pondered slightly, then picked up her draft paper and took a look, then handed it to Chen Zhou.

Chen Zhou took it and looked at it for a while, put down the draft paper, and said, "That's right, it's this thing."

On Yang Yiyi's draft paper, the relevant calculations for planet retrograde have been completed, but the calculations of forward direction cannot continue stably.

Originally, Yang Yiyi calculated the planet's direct movement first, but as she calculated, she felt something was wrong.

So he paused temporarily and turned to calculate the situation of the planet's retrograde.

Yang Yiyi said: "It should be that the planet retrograde will affect the stability of the binary star system, which will eventually lead to an imbalance in the binary star system."

Chen Zhou was slightly surprised, but she didn't expect that she had already thought of this.

Chen Zhou thought for a while and said, "Let's compare, who will solve this problem first, how about it?"

Yang Yiyi looked at Chen Zhou and smiled slightly: "Come on, it's like we do questions during summer competitions."

The two began to search for relevant literature on the computer at the same time.

After spending a lot of time, Chen Zhou finally deduced relevant solution information based on the information he found.

[If this planet is not retrograde but direct, the entire system will not exist stably, and the planet is either swallowed by the star or flew out. This is because the fluctuation of the gravitational field intensity of the forward planet is the same as the amplitude of the retrograde planet but the cycle

Longer, longer cycles will weaken the stable effect and ultimately lead to imbalance...]
Chapter completed!