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The star attracts the planet; the planet attracts the star. As a result of the latter, the star changes position. If this change is such that the star moves away from us during one part of the planet's orbit, and towards us at another (or more generally, the star's speed towards us, or away from us, changes slightly), then this can be detected as a Doppler shift.
What else can I help you with?
Does the absorption spectra tell astronomers if a star is moving towards the earth?
No, absorption spectra do not directly tell astronomers if a star is moving towards Earth. Doppler shifts in the absorption lines of a star's spectrum can indicate its motion along the line of sight, but to determine if a star is moving towards Earth, astronomers would typically use techniques such as measuring changes in its position over time through methods like astrometry or observing its spectroscopic radial velocity.
Can astronomers tell from the elements of a star what uts surface temperature is?
Yes, astronomers can estimate the surface temperature of a star based on its spectral type, which is determined by the elements present in its atmosphere. Each spectral type corresponds to a range of surface temperatures, allowing astronomers to make an educated guess about a star's surface temperature.
How can astronomers tell whether there is a second unseen star in a system?
Astronomers can infer the presence of an unseen star in a system through its gravitational influence on the observed star(s). This influence can manifest as deviations in the star's orbit or variations in its brightness or spectral features. Techniques such as astrometry, radial velocity measurements, and gravitational lensing can also be used to detect the presence of unseen stars.
Astronomers find that light coming from point A at the edge of the sun has a slightly higher frequency than light from point B at the opposite side What do these measurements tell us about the sun's?
This observation indicates that the Sun is rotating about its axis, causing a Doppler shift in the light's frequency. The difference in frequency between points A and B is due to the Doppler effect, showing that different parts of the Sun are rotating at varying speeds.
Why does the colour of the stars tell you about it?
The color of a star can provide information about its temperature and age. Hotter stars appear blue or white, while cooler stars appear orange or red. This color can help astronomers determine the star's stage in its life cycle and characteristics like size and brightness.
What does the Doppler Effect tell astronomers about the universe?
It tells us that the Universe is expanding.
What can a stars spectrum tell astronomers about a star?
What elements the star is made of.
Does the absorption spectra tell astronomers if a star is moving towards the earth?
No, absorption spectra do not directly tell astronomers if a star is moving towards Earth. Doppler shifts in the absorption lines of a star's spectrum can indicate its motion along the line of sight, but to determine if a star is moving towards Earth, astronomers would typically use techniques such as measuring changes in its position over time through methods like astrometry or observing its spectroscopic radial velocity.
What can a stars spectrum can tell astronomers?
What makes up the star or element.
How can astronomers tell whether there is a unseen second star In a system?
Because of perturbations within the observed star.
What can the Doppler effect tell us about in astronomy?
It can tell us whether a star, or a galaxy, is moving towards us or away from us.
Can astronomers tell from the elements of a star what uts surface temperature is?
Yes, astronomers can estimate the surface temperature of a star based on its spectral type, which is determined by the elements present in its atmosphere. Each spectral type corresponds to a range of surface temperatures, allowing astronomers to make an educated guess about a star's surface temperature.
Do you use the Doppler effect or particle accelerators to measure the speed of stars?
The Doppler effect is used to detect whether a star is moving away from us or towards us. This method doesn't tell us anything about a star's "sideways" movement. OR The Doppler Effect should be corrected for the (gravitational) size of the star, since gravity also changes the light's energy. re: Sideways movement, I thought special relativity reacts to sideways motions? Besides, how long can a star be traveling sideways -- technically, no distance.
How is ultra violent studied by astronomers?
UV is studied in strength from stars like our sun. they use this to tell how old the other star is and how far it is from death
How can astronomers tell whether there is a second unseen star in a system?
Astronomers can infer the presence of an unseen star in a system through its gravitational influence on the observed star(s). This influence can manifest as deviations in the star's orbit or variations in its brightness or spectral features. Techniques such as astrometry, radial velocity measurements, and gravitational lensing can also be used to detect the presence of unseen stars.
What does analysis of colors tell astronomers about objects in space?
Analysis of colors from objects in space can help astronomers determine the object's temperature, composition, and age. Different colors indicate different chemical elements present in the object, as well as its evolutionary stage. By studying the colors, astronomers can gain valuable insights into the physical properties and processes occurring in space.
What does the Doppler affect tell us?
The Doppler effect tells us that the frequency of a wave changes when the source of the wave or the observer is in motion relative to one another. This change in frequency results in a shift in the perceived pitch of sound waves or the perceived color of light waves.
