Star A has magnitude 2 and star B has magnitude 3. Which star is brighter? A or B
What is the ratio of brightness we observe?
Star A has magnitude 2 and star B has magnitude 3. Which star is brighter? A...
Star B has magnitude 7 and star A has magnitude 2. Which star is brighter? A or B What is the ratio of brightness?
A quasar has a brightness that corresponds to apparent magnitude 14.6 (Unit 55.4). a. If it is 1.29 billion pc away, how many times brighter than the Sun is it? The quasar is × 1011 times brighter than the Sun. b. How does this compare to the brightness of the Milky Way? Assume that the Milky Way contains about 1011 stars. The quasar is times brighter than the Milky Way.
Star A has a V-band magnitude of 5. Star B also has a V-band magnitude of 5. What is the V-band magnitude if you observe A and B in superposition (assuming the two stars are not in occultation of each other)? The answer is 4.25 but I'm not sure how. Please show all calculations.
Star A is 4 times brighter than Star B. How many times hotter is Star A than Star B?
Star A is 3.2 times hotter than Star B. How many times brighter is Star A than Star B?
htness is distance-dependent. The brighter star may not actually e. We need to correct for the distance so that we can actually r s. If you know the apparent magnitude and the parallax (distance number to the absolute magnitude scale. The absolute magnit what the magnitude of the star would be if it was located at 10 p Absolute magnitude Apparent magnitude+ 5+5 x log(paralla Convert these apparent magnitudes to absolute magnitudes. Apparent Magnitude 1.0.o Parallax 0.32" 0.012" Absolute Magnitude
How many times brighter is a Cepheid variable of absolute magnitude - 3 (negative 3) than a white dwarf of absolute magnitude +7(positive 7)? a) 10,000 times brighter b) 100 times brighter c) 1,000 times brighter d) 100,000 times brighter
Star A is 19 times as far away as star B. Both appear to have the same brightness. What is the ratio of the luminosity of star A to that of star B?
Star A is 5 times as far away as star B. Both appear to have the same brightness. What is the ratio of the luminosity of star A to that of star B?
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...