Why are there few visual binaries with orbital periods of a few years or less?
Q: Based on your radial velocity curve, record the orbital period P in days. This is the time elapsed…
A: 1) The orbital period P is the time elapsed between two subsequent peaks or troughs on the curve.…
Q: If the celestial sphere were to be considered a hypothesis, would it be correct?
A: Celestial sphere is a sphere of extremely large radius concentric with earth. It gives the…
Q: In a binary star system, the average separation between the stars is 4.0 AU, and their orbital…
A:
Q: What is an emission nebula?
A: The space between stars and galaxies is filled with clouds of gas and dust. These clouds of gas and…
Q: g baseline
A: (a) Triangulation allows to the measure distance of inaccessible objects . Astronomers use the…
Q: Why are Earth-based parallax measurements limited to the nearest stars?
A: Parallax is one of the methods used by astronomers to estimate the distance to stars and other…
Q: An astronomer makes precise measurements of a star with respect to the background celestrial sphere.…
A: Given, The star changes its position from January 1 to July 1 by a total of 1.9 arc seconds. Its the…
Q: Orion nebula is located at 450 pc. Calculate the parallax angle.
A: Parallax is a method used to calculate the distance to astronomical objects like stars. Parallax is…
Q: Consider the attached light curve for a transiting planet observed by the Kepler mission. If the…
A: Radius of the exoplanet
Q: When we look at a particular star, we are seeing it as it was 371 years ago. How far away from us…
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Q: What is the most common type of star?
A: There are different types of stars in our universe. They are mainly categorized based on their mass,…
Q: The planet Jupiter is more than 5 times as far from the Sun as planet Earth. How does the brightness…
A: Given: Distance between Sun and Jupiter = 5 x distance between earth and Sun
Q: A certain binary system consists of two stars that have equal masses and revolve in circular orbits…
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Q: Consider two stars A and B, with apparent magnitudes mA = 3 and mB = 13. Which star is brighter?…
A: two stars are therestar A and star Bmagnitudes:MA=3MB=13
Q: What is the apparent magnitude of the Sun as seen from Venus at perihelion? What is the apparent…
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Q: O O O 1. Brightness 2. O 3. 4. 1 2 3 The position of the star and the planet on the left correspond…
A: A light curve illustrates the variation in a star's brightness caused by the passage of an exoplanet…
Q: Listed below are several fictional stars with their luminosities and distances from Earth given.…
A: Given information: The relative luminosity and distance of the stars from the Earth: Q-bert: L=400…
Q: If a star 10 parsecs away from us was moved and appeared to be 4 times brighter after movement, how…
A: Given, d=10 parsecs
Q: If star A has an observed flux that is 1 million times larger than star B, what is the magnitude…
A: Let the flux observed from the star A is BA and the star B is BB. Then Relative brightness can be…
Q: Star A has an apparent magnitude of 3.0, and Star B has an apparent magnitude of 6.0. Which star…
A: Given that the magnitude of apparent value of A is 3 and the magnitude of apparent value of B is 6.…
Q: The International Space Station is about 90 meters across and about 380 kilometers away. One night…
A: Data Given , Arc of international space station ( S1 ) = 90 m = 90 × 10-3 km Radius of space…
Q: What is an eclipsing binary?
A: Eclipsing binary is a variable star. It comes under binary star system.
Q: What is the total mass of a visual binary system if the average separation of the stars is 8 AU and…
A: A binary system is formed when two astronomical objects come close enough to start orbiting each…
Q: Why do distant stars look redder than their spectral types suggest?
A: The pace is mostly empty but there are areas of large density of the interstellar medium. It…
Q: How many times dimmer is a star with magnitude +3 compared with the planet Mars with a magnitude of…
A: The magnitude of star is +3, and that of Mars is -1.
Q: A distant galaxy has an apparent magnitude of 13 and is 5,000 kpc away. What is its absolute…
A: Apparent Magnitude The apparent magnitude of a star or a galaxy is the measure of how bright the…
Q: As we discuss in class, the radius of the Earth is approximately 6370 km. The radius of the Sun, on…
A: The radius of the earth Re = 6370 kmThe diameter of the earth de= 2Re = 12740 kmThe radius of the…
Q: What diameter telescope is needed to resolve the separation between an Earth-like planet and its…
A: Given data The wavelength is given as λ=550 nm. The separation between the star and telescope is x…
Q: White Dwarf Size II. The white dwarf, Sirius B, contains 0.98 solar mass, and its density is about 2…
A: It is given that, M=0.98 solar mass=0.98×1.989×1030 kg=1.95×1030 kgρ=2×106 g/cm3=2×106×103…
Q: How many light years are in one parsec? (Use at least two significant figures)
A: Distance is Note:Convert the distance in units of .
Q: What is a standard candle in the astronomical sense? How do Cepheid variables fit into this and what…
A: For distances which are too large to measure using parallax, astronomers use 'standard candles'.…
Q: The diameter of the Sun is 1,391,400 km. The diameter Moon is 3,474.8 km. Find of the the ratio, r=…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
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- Stars A and B both have the same spectral class. Star A is 7 times farther away than star B. The brightness of star A will be ________ times dimmer than B. (Give a number.)How many kilometers are there in 5 parsecs?What is the apparent magnitude of the sun as seen from Saturn about 10 AU away? Appear to magnitude of Saturn =
- Could you find the Mass of the Sun using the slope of the of T2 versus a3, using the values that are in units of years and AU? ExplainThe H-R diagram is the most important graph in astronomy. One of the reasons that this graph is so powerful is the number of different kinds of data it shows. Most graphs show two types of data. The H-R diagram shows seven. Can you name these 7 types of information about stars that appear on the H-R diagram?What does a quarter wavelength look like , like theta/4
- what does a clear area around a disc really tell us exactly?There are fewer eclipsing binaries than spectroscopic binaries. Explain why.The figure below shows the radial velocity of a star plotted as a function of time over the course of 20 days. Where is the planet located in its orbit on day 1 (the start of the graph)? 20 Orbit of star 10- Earth 10+ Time -20 Orbit of planet Radial Velocity
- What is the relationship between the color of a reflection nebula and the color of the star that illuminates it?I am struggling to answer this question. There are two parts to this question (as shown in the picture) I have already tried the answers 6.29x10^-13 for part 1 and 65.53 for part 2 and they are both incorrect. Any help is greatly appreciated, thank you!!If the mass of a star is 9.94 10^30 kg then what is Kepler's constant for that star?Reminder k = ( T^2 / R^3 )