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Why would the star Sirius find that its spectral lines are blue shifted?
The spectral lines of Sirius are blueshifted because the star is moving more or less toward us.
Where is the Sirius star on h-r diagram?
Sirius is a binary star. Sirius A has a spectral type of A1V and will appear on the HR in the top left corner. Sirius B has a spectral type of DA2 and will appear on the HR in the bottom left corner as a white dwarf.
How far apart are Sirius A and Sirius B?
Sirius is a binary star system Sirius A and Sirius B.The distance separating Sirius A from B varies between 8.1 and 31.5 AU. (See related question).
What does O B F G K M stand for in brightest star?
Those are codes for spectral types - roughly, the color of the stars.
The amount of time between successive passes of the star Sirius across the meridian is?
The amount of time between successive passes of the star Sirius across the meridian is 23 hrs 56 minutes.
How big is an O star?
The spectral type of a star (OBAFGKM) are based on spectral emissions and have no real relationship with size.
Who discovered the relationship betweens a star's temperature and its brightness?
Ejnar Hertzsprung and Henry Norris Russell,working independently, realized the relationship between a star's temperature and its brightness.Together, in 1910, they formed what is now known as the Hertzsprung--Russell diagram or HR Diagram.It's a scatter graph showing the relationship between a star's absolute magnitudes, their spectral types and temperatures.
Who discovered the relationships between stars temperature and the brightness?
Ejnar Hertzsprung and Henry Norris Russell,working independently, realized the relationship between a star's temperature and its brightness.Together, in 1910, they formed what is now known as the Hertzsprung--Russell diagram or HR Diagram.It's a scatter graph showing the relationship between a star's absolute magnitudes, their spectral types and temperatures.
What two star characteristics does the hertzsprung - Russell diagram compare?
The HR Diagram compares the relationship between the stars' absolute magnitudes or luminosities versus their spectral types or classifications and effective temperatures.
What two star characteristics does Hertzsprung Russell diagram compare?
The HR Diagram compares the relationship between the stars' absolute magnitudes or luminosities versus their spectral types or classifications and effective temperatures.
Is an O star blue or red?
A star with a spectral class of O is classified as a Blue Star. A red star will have a spectral class of M See related question
What refers to the brightest star?
The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their spectral types or classifications and effective temperatures.
You observe the same spectral line in two stars that are identical in every way except that one rotates faster than the other How does the spectral line differ between the two?
The spectral line in the star that rotates faster will be broader due to the Doppler effect caused by the varying speeds of rotation on different parts of the star. The faster rotation creates a wider range of velocities contributing to the broadening of the spectral line compared to the slower rotating star.
What does the HR diagram depict?
The HR diagram, also known as the Hertzsprung-Russell diagram, depicts the relationship between the luminosity and temperature of stars. It shows how stars are distributed in terms of their brightness and temperature, allowing astronomers to classify stars based on these characteristics.
What are the spectral classes of spica?
Spica is a binary star system whose primary star is classified as a blue-white giant of spectral type B1 III-IV. The secondary star is a blue-white main sequence star of spectral type B2 V.
The spectral type of a star measure?
The spectral type of a star indicates its surface temperature and helps classify it based on the characteristics of its spectrum. It is determined by analyzing the patterns of absorption lines in the star's spectrum, which correspond to different elements present in its atmosphere. Spectral type is important for understanding the physical properties and evolutionary stage of a star.
Why would the star Sirius find that its spectral lines are blue shifted?
The spectral lines of Sirius are blueshifted because the star is moving more or less toward us.
