0
What else can I help you with?
Are RR Lyrae stars and RR Lyrae variables different?
RR Lyrae variables are variable stars often used as standard candles. RR Lyrae are pulsating horizontal branch stars.
How did Helen Hogg make a contribution to field of astronomy?
Helen Hogg was a pioneering Canadian astronomer who made significant contributions to the study of variable stars and globular clusters. She conducted extensive research on the Magellanic Clouds and played a key role in promoting astronomy education and public outreach. Hogg's work helped improve our understanding of stellar evolution and the structure of the Milky Way galaxy.
What kind of star brightens and fades in a regular pattern?
A pulsating variable star brightens and fades in a regular pattern due to periodic changes in its size, temperature, and luminosity. These stars can be categorized into different types, such as Cepheid variables and RR Lyrae stars, based on their specific properties and pulsation periods.
The single variable that is deliberately changed in the experiment is the?
Independent variable. The dependent variable is the one that is affected by the independent variable, for example-y=2x+2This is the equation of a line. X is deliberately changed to find y hence - y is the dependent variable and x is the independent variable.
What is the antonym for responding variable?
"Controlled Variable" or "Manipulated Variable"
When did Helen Sawyer Hogg die?
Helen Sawyer Hogg passed away on January 28, 1993. She was a renowned Canadian astronomer known for her research on globular clusters and variable stars.
How can varble stars be used to determine the distance to globular clusters?
The idea is that CERTAIN TYPES of stars, including certain variable stars (such as Cepheids) have a known brightness; so if you observe their apparent brightness, you can calculate their distance.
Is Betelgeuse a pulsating star?
Yes, Betelgeuse is a pulsating star. It is a red supergiant star located in the constellation of Orion. Betelgeuse pulsates in size, changing in brightness over a period of about 420 days.
Pulsating variable stars are A-Binary stars B-Pulsars C-Novas D-Cephied Variables?
Cepheid Variables.
What kind of star is a pulsating star?
A pulsating star is a type of variable star that changes in brightness due to periodic expansions and contractions of its outer layers. These changes can be regular or irregular, and the star's size and temperature vary over time. Examples of pulsating stars include Cepheid variables and RR Lyrae stars.
Are RR Lyrae stars and RR Lyrae variables different?
RR Lyrae variables are variable stars often used as standard candles. RR Lyrae are pulsating horizontal branch stars.
What does Cepheid mean?
A Cepheid is a member of a class of pulsating variable stars. The relationship between a Cepheid variable's luminosity and pulsation period is quite precise, securing Cepheids as viable standard candles and the foundation of the Extragalactic Distance Scale.
What does a variable scale look like?
A variable scale uses a set of adjustable accordion-like compasses to compute the distances between points on a map or diagram.
How are Cepheid variables related to the instability strip?
Cepheid variables are a type of pulsating variable star that fall within the instability strip on the Hertzsprung-Russell (H-R) diagram. This strip represents a region where stars are unstable to radial pulsations, leading to variations in their luminosity and temperature. Cepheids are crucial in determining stellar distances due to their period-luminosity relationship.
What sport is played on a variable sized grounds?
Baseball...though the bases have a consistant distances in all stadiums
What has the author Christine Mary Coutts written?
Christine Mary Coutts has written: 'Period changes of RR Lyrae variables in the globular cluster M5' -- subject(s): Cepheids, Variable stars
How are Cepheid variable stars used in measuring distances in astronomy?
Cepheid variable stars are used in astronomy to measure distances by observing their pulsation periods. The longer the period of pulsation, the brighter the star, allowing astronomers to calculate the star's true brightness and therefore its distance from Earth. This method, known as the period-luminosity relationship, helps determine distances to faraway galaxies and other celestial objects.
