Suppose that two identical stars (they have the same total light output) are located so that...
- Suppose that two identical stars (they have the same total light output) are located so that star A is at a distance of 5 pc and star B is at a distance of 25 pc from Earth. How will star B appear, compared with star A?
- A star is at such a distance that its apparent magnitude (m) is 10 magnitudes fainter than its absolute magnitude (M). How far away is it?
- Three stars have the following apparent (m) and absolute (M) magnitudes .Which star is farthest away Star A: M = 1.8,m = 3.8 Star B: M = 2.5 , m = 9.5 Star C: M = 7.6 , m = 15.1
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Suppose that two identical stars (they have the same total
light output) are located so that...
Now suppose youhave two stars, with one them 2times more luminous than the other. From Earth...
Now suppose youhave two stars, with one them 2times more luminous than the other. From Earth you see that they both appear to have exactly the same apparent brightness or intensity. How much farther away is the bright star compared to the fainter one?
Two stars—A and B, with absolute magnitudes 3 and 8, respectively—are observed to have the same...
Two stars—A and B, with absolute magnitudes 3 and 8, respectively—are observed to have the same apparent magnitude. Which star is more distant, and how much farther away is it than the other?
Hi! So this table on the picture has star information needed. the queastion is: “A star...
Hi! So this table on the picture has star information needed.
the queastion is:
“A star whose apparent magnitude and absolute magnitude are
identical is licated at 10 persecs away from us (by definition).
Star C is at 10 pc. Of the other four stars, rank them from
closest, closer, farther, farthest. (HINT: figure out if a star
would be brighter or dimmer IF it were located at 10
persecs.)”
So on second picture were my answers, and i got...
Magnitude and distance modulus a) What is the absolute magnitude and distance modulus for each of...
Magnitude and distance modulus a) What is the absolute magnitude and distance modulus for each of the following stars: i)m=+5.0, d=200 pc ii) m=-3.5, d=7 pc iii) m=+6.8, p=0.003" (p is the parallax angle) b) The Sun has an apparent magnitude of -26.8. Calculate i)its absolute magnitude. ii) the apparent magnitude it would have at the distance of a Centauri (1.3 pc). iii) the apparent magnitude it would have if it were 2 kpc away.
4. Two stars are imaged by the same telescope/CCD system. If both stars are known to...
4. Two stars are imaged by the same telescope/CCD system. If both stars are known to be at the same distance from the Earth and the measured flux arriving at Earth from star B is 10x that from star A... A)What is the magnitude difference between these two stars? (ie., we want Am- m-m) B)Letting LJ be the luminosity of star A and Lg be that of star B, whet is the ratio of their luminosities: .A
Could one of the stars listed in the table above be an RR Lyrae star?
Cosmic DistancesDISTANCE MODULUS- For this lab, we will focus on two techniques that can be used to measure the distance modulus of objects in deep space - supernovas and Cepheid variable stars. Before we begin, though, we must understand what "distance modulus" means.- Read through the background material on distance modulus.- Use the distance modulus page to complete the following table:ObjectApparent Magnitude (m)Absolute Magnitude (M)Distance Modulus (m-M)Distance (pc)Star A2.410Star B516Star C1025Star D8.50.5- Could one of the stars listed in the...
The characteristic absorption spectra of two stars are shown. Indicated in each is a set of absor...
The characteristic absorption spectra of two stars are shown.
Indicated in each is a set of absorption lines due to interstellar
material between us and the stars. Using this information and the
spectral drawings shown below complete parts a - e of this
question.
a. The interstellar absorption lines appear more intense in the
spectrum of star A than star B. What does this mean in terms of the
number of absorbing atoms between the earth observer's line of
sight...
1. A star has a parallax of 0.324 arcseconds and apparent magnitude in V-band m= +1.55....
1. A star has a parallax of 0.324 arcseconds and apparent magnitude in V-band m= +1.55. Later observations reveal that the “star” is actually a close binary, with members star 1 and star 2. Star 1 is found to have mı = +1.83. (a) Find the apparent magnitude of star 2, m2. [2 marks] (b) What is the ratio of the V-band flux received from star 1 to that received from star 2? (c) Find the distance to the system...
Help me with the following two questions about astronomy. Thank you drag-and-drop environment to put the...
Help me with the following two questions about astronomy.
Thank you
drag-and-drop environment to put the correct words in the right places. (Please Note: Not all draggable items will be u Draggable Items magnitude faintitude apparent brightness brighter Because distance causes light to spread out and get dimmer, astronomers need to distinguish between the total energy output of a star, called its and how bright a star looks from Earth, called its For historical reasons, astronomers still use a system...
Two stars, M1 and M2, have the following properties: M1 is 5 M and is blue,...
Two stars, M1 and M2, have the following properties: M1 is 5 M and is blue, M2 is 0.5M and is red. 1 5a. Which star is hotter, M1 or M2. Why? 5b. If they are separated by 100 AU, how far away would the center of mass be from M1 and from M2. 5c. The two stars rotate around their common center of mass with a period of 1 year. If we increase the distance to 200AU, what will...
Hi! So this table on the picture has star information needed.
the queastion is:
“A star whose apparent magnitude and absolute magnitude are
identical is licated at 10 persecs away from us (by definition).
Star C is at 10 pc. Of the other four stars, rank them from
closest, closer, farther, farthest. (HINT: figure out if a star
would be brighter or dimmer IF it were located at 10
persecs.)”
So on second picture were my answers, and i got...
4. Two stars are imaged by the same telescope/CCD system. If both stars are known to be at the same distance from the Earth and the measured flux arriving at Earth from star B is 10x that from star A... A)What is the magnitude difference between these two stars? (ie., we want Am- m-m) B)Letting LJ be the luminosity of star A and Lg be that of star B, whet is the ratio of their luminosities: .A
The characteristic absorption spectra of two stars are shown.
Indicated in each is a set of absorption lines due to interstellar
material between us and the stars. Using this information and the
spectral drawings shown below complete parts a - e of this
question.
a. The interstellar absorption lines appear more intense in the
spectrum of star A than star B. What does this mean in terms of the
number of absorbing atoms between the earth observer's line of
sight...
Help me with the following two questions about astronomy.
Thank you
drag-and-drop environment to put the correct words in the right places. (Please Note: Not all draggable items will be u Draggable Items magnitude faintitude apparent brightness brighter Because distance causes light to spread out and get dimmer, astronomers need to distinguish between the total energy output of a star, called its and how bright a star looks from Earth, called its For historical reasons, astronomers still use a system...
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