The Case Study of Arcturus Star (The Swati Nakashtra)
Stars are gigantic balls of gas, mostly hydrogen gas. There is so much gas and other material that the gravity of this huge gas-ball holds everything together. There is so much gravity that the gas becomes very dense and hot.Our own sun is a star. Fortunately, we are far enough away from it that the gravity of the gas can't pull us in. It would be rather an unpleasant inside of a star.
The gravity is strong enough that it squeezes the gas together so tight that nuclear fusion occurs. That means that the nuclei (centers) of the atoms get stuck together and 'fuse'. This releases a lot of energy and causes the stars to heat up. The heat works its way from the inside of the star to the surface and then radiates into space. So what we see of stars is the energy released from the nuclear reactions inside their cores and then radiated from the surface. Since most stars are VERY far away, the light takes anywhere from a few years to millions of years to reach us. So the starlight that we see is very old indeed.
There are many different kinds of stars. They come in many sizes and colors. Some stars even orbit around each other. We call these binary stars. If you have any more questions about stars, please ask us to tell you more.
The Arcturus (Swati Nakashtra)
Arcturus (Swati Nakashtra), a red giant, looks orange to the eye. It’s the brightest star in the northern half of Earth’s sky dome. Arcturus is especially noteworthy for its large proper motion or sideways motion across our sky. Only Alpha Centauri – our sun’s nearest neighbor among the stars – has a higher proper motion among the first-magnitude or bright stars in the stellar neighborhood.
It is a classic orange class K (K1) giant star with a precisely defined surface temperature of 4290 degrees Kelvin. To the eye, it shines 113 times more brightly than our Sun.
Its lower temperature, however, causes it to radiate considerable energy in the infrared. When this infrared radiation is taken into account, Arcturus actually shines almost twice as brightly, releasing 215 times more radiation than our Sun, from which we find a diameter 26 times solar, about a quarter the size of Mercury's orbit. Arcturus is close and large enough so that its angular diameter of 0.0210 seconds of the arc can easily be measured, leading to a very similar direct determination of 25 times the solar dimension and providing nice confirmation of stellar parameters. Arcturus has a velocity relative to the Sun that is higher than other bright stars. Compared with the set of surrounding stars, which orbit the Galaxy on more or less circular orbits, it falls behind by about 100 kilometers per second (as do several others of the "Arcturus Group").
The lagging movement has long suggested that the star comes from an older population of the Galaxy. Consistently, it is somewhat deficient in metals, having only about 20 percent as much iron relative to hydrogen as found in the Sun. A more intriguing suggestion is that the star actually comes to us from a small galaxy that merged with ours some 5 to 8 billion years ago. As a giant, weighing in at around 1.5 times the mass of the Sun, it has ceased the fusion of hydrogen in its core. Though it is somewhat brighter than we would expect for a stable helium fusing star, helium fusion to carbon has probably already begun. Such stars are not expected to have a magnetic activity like the Sun, but very weak X-ray emission suggests that Arcturus indeed is magnetically active and has a hard-to-observe "buried corona."
Arcturus is a type K0 III orange giant star, with an absolute magnitude of −0.30. It has likely exhausted its hydrogen from its core and is currently in its active hydrogen shell burning phase. It will continue to expand before entering horizontal branch stage of its life cycle.
This is One of most pious Nakashtra Associated with the abode of Goddess Saraswati ruled by the Deity - " Vayu " - " the wind " - Varun Dev - one of 5th Elemental God ruling lower Earthy elements. One of Most Talented Nakashtra having Blessed from Goddess Saraswati - Shine like its Deep Brightness light like a pole star - Native born in this nakashtra will be Well learned, Talented and Knowledgeable in every art concerned with Maa Saraswati - Like Material, Philosophical, Spiritual, Art, Music and Entertainment.
Its one of an Independent Nature Nakashtra rising Away form both Libra and Scorpio Sign, because of this native born in this nakshtras are more likely Independent in nature, like to shine Independently in later age. Because of Ruling Nakashtra of North Node - Natives born in this are Constant Seeker of Knowledgeable sciences including all form of Arts and talent related with material (5th House) and non material(9th House) studies and always want to gain more and more Universal Knowledge.
Because of tendency toward Slow learning nature - Saturn is most exalted in this nakashtra and usually shines at later Age around 36.
Because Of Huge Mass and Strong gravity pull and closest distance of this star any Slow moving Planet transit on this star have strong impact on earth atmospheres and Weathers conditions. That's why we see this star for Rainfall from the ancient time.
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