Why might stars true masses be higher than the value calculated
Q: Dinary star system is observed orbiting with a period of 20.0 years, at an average distance of 5.0…
A:
Q: All stars start their lives with the same basic composition. What determines their differences? O…
A: Mass they formed with
Q: In a binary star system, the average separation between the stars is 4.0 AU, and their orbital…
A:
Q: Which of the following is NOT the result of the death of a massive star? Select one alternative:…
A: Hypernova is the type of phenomenon that happens when a massive star collapses into this and results…
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: Effective Temperature (K) 25,000 10,000 -10 6,000 3,000 10 102 A +10- D 10-2 +15 B A 104 M F…
A: The Hertzsprung Russell diagram is used to plot the temperature of stars with their luminosity.…
Q: What would be the approximately luminosity of a main sequence star with a temperature of 9,000°C ?…
A: Temperature = 9000° C=9273.15 K Luminosity will be given by following formula:L=σT4 L is the…
Q: If the main-sequence mass lower limit is 0.08 solar mass and the brightest main-sequence stars are 1…
A: The Main Sequence Stars are a mass sequence, with low mass stars forming an equilibrium with a cool…
Q: What are the approximate spectral type, temperature, absolute magnitude number, and luminosity of…
A: Required : Spectral type, absolute magnitude, temperature and luminosity of star E.
Q: Orbital Period= Orbital Radius= Brightness Drop= Planet Radius= Doppler Shift = Velocity = yrs AU %…
A: We know the formula of orbital period T = 2πR3GMWhere R = 2615.42 RsunR = 2615.42 ×696340×103m =…
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: Calculate the mass of a star having a diameter of 6E5 km and an average density of 1.5 g/cm3.…
A: We have : Density = masscolumeVolume of star = 43x π x r3Diameter of star = 6 x 105kmRadius of star…
Q: Which of the following is least reasonable regarding the mass of stars? Group of answer choices…
A: Stars are of different sizes and they have their own set of characteristics based on multiple…
Q: Ideas of a content for a vlog which shows the star life cycle, thank you!
A: A star can go through either life cycle (a) if it is an average size star or life cycle (b) if it is…
Q: The giant star Betelgeuse has an angular diameter as observed from Earth of about 0.05 arc seconds.…
A: Solution:-
Q: Why does the luminosity of a star depend on both its radius and its temperature?
A: Luminosity is the radiant power emitted by star. The luminosity is measured in Watt or Joules per…
Q: Consider two stars on the main sequence, A and B. Star A has a mass of Мо Star B has a mass of 0.2…
A: Solution attached in the photo
Q: Two stars have the difference between their apparent magnitudes +5, so their apparent luminosity…
A: The difference between the apparent magnitude is given as m1-m2=+5
Q: A turnoff point corresponding to the oldest star cluster would occur at what spectral…
A: Turnoff point in HR diagram is the point where the star leaves the main sequence branch
Q: What causes a star to move off the main sequence?
A:
Q: Suppose the distance to a star is doubled. Then the luminosity of the star is O Remains the same,…
A: Luminosity and apparent brightness are 2 different things. Luminosity is unique property of body and…
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: Which of the following statements is CORRECT in terms of the star's absolute magnitude??
A: (1) Kepler's Law for Planetary motion states Every planet orbits in an elliptical shape with the…
Q: High AO 80 Co OD OE FO Low High Low Temperature According to the graph above, which star is the…
A: Solution, Given graph brightness and temperature of different star an object is said to be hottest…
Q: In every nebula, a star is beginning to form. a) True b) False
A: True or False: In every nebula, a star is beginning to form.
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: On a H-R diagram for main sequence stars, as temperature increases, brightness usually increases…
A: Required: Variation of brighness with temperature in HR diagram.
Q: tain
A: Given:- (a) For given TLC: The solvent front is 5.5 cm.
Q: Why does the orbital period of a binary star depend on its mass?
A: A binary system is formed when two massive astronomical objects start orbiting each other around a…
Q: QUESTION 2 "If the power supply voltage is-54V, the R1-120, the R2-870Find the voltage cross R1 due…
A: Concept used: Current gets divided in inverse proportion of resistances.
Q: On a Hertzsprung-Russell diagram, where on the main sequence would we find stars that have the…
A: We need to investigate where we find the largest main sequence stars in the H-R diagram.
Q: Calculate the size of a star if its surface temperature is 6000 K and has a power output of 5.6 x…
A: An ideal body capable of absorbing all the radiation that falls on it is considered a blackbody. The…
Q: Match the spectral type and luminosity class to the letters shown on the Hertzsprung-Russell diagram…
A: Luminosity is directly proportional to the size of the star. On the basis of temperature and their…
Q: The main-sequence age of a star of 1M⊙ is about 1010 years. What is the main-sequence age of a star…
A: Answer the following question is
Q: A less massive star will usually live longer than a more massive star O True O False
A: In star hydrogen is the fuel
Q: Calculate the mass of a star having a diameter of 6E5 km and an average density of 1.1 g/cm3
A: It is given that,
Q: Why is it that we can describe the life cycle of a star and be confident about it?
A: It is required to describe how we can get an idea about the life cycle of a star.
Q: The distance to a binary is 8x107 m and its apparent magnitude is +2. What is its absolute…
A:
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