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Which object would best be identified by a periodic Doppler shift in a star's spectrum along with a dip in the star's light intensisty?
Wiki User
∙ 9y ago
Super Galaxy Gurren Lagann
Wiki User
∙ 9y ago
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What ''shifts'' when you have a Doppler shift in starlight?
What shifts is the frequencies of the light. This can be observed by certain lines in the spectrum, which have very specific positions (frequencies).
What are the properties of electromagnetic waves and interactions that make Doppler radar possible?
Doppler radar wouldn't be possible if the speed of light were infinite. Also it wouldn't be possible if the electromagnetic waves didn't reflect on objects. Also it helps a lot if those electromagnetic waves have a particular frequency as opposed to a wide spectrum. --Some person named Adrian who did the research
What methods has led to the most discoveries of massive planets orbiting near their parent stars?
Detecting the gravitational effect of an orbiting planet by looking for the Doppler shifts in the star's spectrum.
What is the evidence of motion of the universe?
The most important piece of evidence that shows that the universe is in motion is the Doppler Effect, also termed the red shift. This basically means that objects headed away the observer will have their light bent toward the "red" (lower frequency) side of the light spectrum while objects headed toward the observer will have their light bent toward the "blue" (higher frequency) end of the spectrum. By using the Doppler Effect we are able to that the majority of the universe is in motion, expanding outward.
What causes each line of the emission spectrum?
There are two primary mechanisms that broaden spectral emission (or absorption) lines: Doppler broadening and collision-induced broadening. Doppler broadening occurs because of the relative thermal motions of the molecules in a gas. Simply put, the molecules are all bouncing off each other, so some are moving towards you and some away, some fast and some slow. Each molecule's spectrum is Doppler shifted by it's current velocity. The composite spectrum from all the individual molecules has its lines smeared out or broadened as a result. As you can guess, the amount of broadening depends on the temperature of the gas. Collision-induced broadining, sometimes called pressure broadening, is is a result of the deformation of the molecules when they bounce off each other. For example, they may not be as symmetrical after a collision as they were before. These deformations perturb the quantum mechanical energy levels of the molecule, slightly shifting the frequencies of the emission or absorption lines. Just like Doppler broadening, the composite spectrum's lines are therefore broadened. This effect depends on both the pressure and temperature of the gas. See spectralcalc for complete details and online simulations. Starlight can be reddened by the Doppler Effect and by the gravity well (that light from a star finds itself in).
The blank effect allows us to use the spectrum to study a source's motion?
The Doppler affect
What is the for the change in a stars spectrum when it moves away from earth?
Doppler shift
Doppler effect states that the motion of any object can?
Shift the wavelength of the spectrum.
What is the name for the change in a stars spectrum when it moves away from the earth?
It is called The Doppler Shift
Can the Doppler effect be a periodic motion?
The Doppler effect can identify periodic motion. That's exactly how we knowabout many double stars orbiting each other, even when we can't separatetheir images in a telescope.As one of the stars moves in its orbit first toward us, then away from us, thentoward us again, we see its spectrum blue shift, then red shift, then blue shiftagain, with a period of days, weeks, months, or even years.
Is the Doppler effect a periodic motion?
The Doppler effect can help us identify periodic motion. That's exactly howwe know about many double stars orbiting each other, even when we can'tseparate their images in a telescope.As one of the stars moves in its orbit first toward us, then away from us, thentoward us again, we see its spectrum blue shift, then red shift, then blue shiftagain, with a period of days, weeks, months, or even years.
What is the for the change in star's spectrum when it moves away from earth?
There is a change in frequency; this effect is called "Doppler effect".
What is a C-Band Doppler radar?
C-Band Doppler Radar is any Doppler radar system which operates in the C-Band of the electromagnetic spectrum (around 4.8Ghz). These are typically the radar systems seen at TV stations as they are affordable and powerful enough for their purposes.
How can a stars spectrum be different from another stars spectrum?
The differences in spectrum are mainly due to: * Differences in temperature between the stars * Differences in chemical composition * Differences in relative movement (redshift / blueshift, due to the Doppler effect)
What is a Doppler red shift and a Doppler blue shift?
A Doppler red-shift is a shift in recognizable features of a star's spectrum from the wavelengths where we know they belong toward longer wavelengths. Such a shift can be caused by the star's moving away from us, and that's how it's interpreted when astronomers see it. A Doppler blue-shift is a shift in recognizable features of a star's spectrum from the wavelengths where we know they belong toward shorter wavelengths. Such a shift can be caused by the star's moving toward us, and that's how it's interpreted when astronomers see it.
What ''shifts'' when you have a Doppler shift in starlight?
What shifts is the frequencies of the light. This can be observed by certain lines in the spectrum, which have very specific positions (frequencies).
Which of the following might be evidence for an extrasolar planet?
Doppler-shifted stellar spectrum and physics calculations that indicate a low-mass object
