What Is a Main Sequence Star? A star whose characteristics place it in a band, called the main sequence, on an H-R diagram is called a main sequence star. The Hertzsprung-Russell (H-R) diagram is a diagram that plots a star's luminosity vs. surface temperature. Luminosity is the ...
A Main Sequence Star is a star that is fusing hydrogen into helium. When a star is referred to as a Dwarf Star, it usually refers to a Main Sequence star. Once a star has finished fusing hydrogen into helium, it begins fusing helium into either carbon or oxygen. During the Main ...
A. Its distance from other stars B. Its age C. Its mass D. The amount of dust around it 相关知识点: 试题来源: 解析 C。解析:The size and brightness of a main-sequence star depend on its mass.表明主序星的大小和亮度取决于它的质量。反馈...
The Sun is an example of a yellow dwarf, also known as a main-sequence star. When a star begins its main sequence life, it is fusing hydrogen to helium within the core. Throughout the life cycle, the core begins to be depleted of hydrogen. As the composition of the core changes, ...
The Sirius star system consists of a white main sequence star and a blue dwarf star. In the case of Sirius, the stars are one large main and a smaller child. However, the star system can be of the same size and be of equal power so that they both orbit a central point, whereas, ...
What happens when a main-sequence star exhausts its core hydrogen fuel supply?Stars:Stars are considered to be approximate black bodies that spend most time of their life as a main-sequence star. They have very high pressure and temperature that support the favorable conditions for ...
Here, you may ask what a main sequence star is. OK...the main sequence refers to a major grouping of stars that uh... forms a relatively narrow band from the upper left to the lower right, when plotted according to luminosity, that is, how bright it is, and surface temperature, on...
Describe the possible final stages in the life cycle of a star. What can be said about the relative temperatures of whitish-yellow, reddish, and bluish stars? Explain. How many 0.75-M main sequence stars would it take to equal the luminosity of one 15-M star? What is the main...
In hyperactive cases, variability with time scales near 50 years are seen, but magnetic field generation is highly non-linear in this regime: this may reflect the decay time of active regions, not a true cycle. Among normal, single, main sequence stars, detecting cycles is fairly ...
either true or false. by combining and manipulating many of these sequences together, complex calculations can be made to solve problems or execute instructions. what is binary all about? binary is a way of representing data and instructions by using ones and zeros. it is the backbone of all...