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…
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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: A star is observed to cross the meridian at an elevation of 67°, as seen from an observatory at a…
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Q: Why are there few spectroscopic binaries in which the stars are separated by more than 10 AU?
A: A binary star system is formed when two stars come close enough that they form an orbit around the…
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: What kind of celestial object is Neowise C/2020 F3 and what makes it special?
A: Comets are rocky objects made of ice rock and dust. They orbit sun and when they get closer to sun…
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: Why can’t astronomers use parallax to measure the distance to stars that are extremely far away?
A: Because it is difficult to measure from earth reason is effects of earth atmospheric. Parallel angle…
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: If a pulsar’s period is 0.05 seconds, how many times does it spin in one day?
A: Given data, Time period of the pulsar = 0.05 seconds
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: Considering that Earth experiences an average intensity of sunlight of 1330 W/m? and is at a…
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Q: What are the names of the following three well-known constellations? (5) (6) (7).
A: please see the next step for solution
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: The total intensity of light measured on earth, from an ecliptic binary, is plotted in the figure as…
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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: Which star in the table below has the least surface temperature? Star Name d (parsecs) Parallax…
A: Since, distance of the star in terms of Parallax is, d=1parallax (in arc-sec)parsecs Now from…
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: The star Sirius has an apparent magnitude of -1.46 and appears 95-times brighter compared to the…
A: Part a: Magnitude in astronomy is defined as an index for the brightness of a star and is denoted by…
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: between january and july , Star appears to move 5 degrees while star b appers to move 7 degress…
A: From January to July, in the span of 6 months, the 2 stars - A & B, are observed. Star A…
Q: What is the orbital period of Proxima Centauri and alpha Centauri about each other if the alpha…
A: Kepler's law is used to describe planetary motion. Kepler's third law describes the…
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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