Heartsound Stars

Table of contents:

1.	Introduction
2.	Why so-called
3.	Discovery of heartbeat stars
4.	Number of heartbeat stars

                   Keywords: English|Stars| Heartbeat stars| Kepler Space Telescope

Heartbeat stars are variable, pulsatile binary star systems. They are pairs of stars that orbit and have very eccentric oval-shaped orbits. As a result, the distance between the two stars varies dramatically. The stars come close and then move away in orbit.

When the stars come close, the mutual gravitational pull between the two stars will change their shapes and cause vibration, which continues until they come close again. So even when they are away, they vibrate. As a result, the stars become slightly ellipsoidal, leading to variation in their brightness.

The stars exercise maximum gravitational force on each other when they are close. Due to this, force the ‘Heartbeat stars ‘to vibrate. Therefore their diameters fluctuate rapidly.

Why are they called Heartbeat stars?

A curve is produced when one marks the ‘Heartbeat stars’ brightness variation on a graph. The star’s light curve resembles an Electrocardiogram-electrical activity of the heart recorded on paper.

Now the brightness variation of the light is converted into audio-one can hear the heartbeats of the stellar companion.

How many Heartbeat stars are discovered?

Over 170 Heartbeat stars have been discovered so far. Many of these are billions of years old.

The stars come very close to each other and probably do not colloid.

When they are close, the tidal force of each star will deform the shape of the other and trigger vibration in each star. As a result, the star may become egg-shaped or even drop-like. For example, the star HD 74423 is teardrop-shaped.

Heartbeat stars rotate slowly and travel slowly in a highly elliptical orbit around the common mass center. The Heartbeat stars are bigger, brighter, and hotter than our

sun.

Many observations and studies are essential to understand and solve the mystery of the ‘heartbeat stars.’

Hashtag: English#Stars#Heartbeat stars #Kepler Space Telescope#

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