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What is the relationship between spectral type and temperatureo a star?
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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.
What does the HR diagram depict?
the relationship between a star's luminosity, temperature, absolute magnitude, and spectral type.
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 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 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.
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.
What spectral type of star that is still around formed most recently?
Spectral Type O.
What does the spectral type of a star measures what?
temperature!
The spectral type of a star measure?
The spectral type of a star is what measures its chemical composition. The visible light that bounces off of it can be used to determine the composition.
What spectral type of star that is still around formed longest ago?
Spectral type M Stars
