You've just discovered a new X-ray binary, whichwe will call Hyp-X1 ("Hyp" for hypothetical). Thesystem Hyp-X1 contains a bright, 82 main-sequence star orbiting an unseen companion. Theseparation of the stars is estimated to be 23 millionkilometers, and the orbital period of the visible staris 4 daysPart CDetermine the mass of the unseen companion.(Hint A main-sequence star with spectral typeB2 has a mass of about 10M)Express your answer as a multiple of Sun's mass to two significant figures.MussoSubmitPart DRequest Answer| ΑΣΦIs it a neutron star or a black hole?black holeneutron star?Mun Determine the mass of the unseen companion. (Hint: A G2 main-sequence star has amass of 1 MSun)Munseen=15. ΑΣΦBAKKE?MSun

Answered: Image /qna-images/answer/8f297b13-589f-45f7-957a-76eac5540daa.jpg

Answered: You've just discovered a new X-ray…

Similar questions

G5
We will take a moment to compare how brightly a white dwarf star shines compared to a red giant star. For the sake of this probler, lets assume a white dwarf has a temperature around 10,000 K and a red giant has a temperature around 5,000 K. As for their stellar radii, the white dwarf has a radius about 1/100th that of the Sun and a red giant has a radius around 100 times larger than the Sun. With this in mind, how does the luminosity of a red giant star compare to that of a white dwarf (Hint: do not try to enter all of these numbers into the luminosity equation fit won't go well); instead, remember that you are only interested in the ratio between the two, so all common units and components can be divided out)? Please enter your answer in terms of the luminosity of the red giant divided by the luminosity of the white dwarf and round to two significant figures. Also, please avoid using commas in your answer. A Moving to another question will save this response. Question 1 of 32 >» 31…
If a T Tauri star is the same temperature as the Sun but is eighteen times more luminous, what is its radius relative to the Sun? (Hint: Use the luminosity-radius-temperature relation: L L = R R 2 T T 4 .) R R =
Use t = 1 M2.5 to compute the life expectancy of a 0.6-solar-mass star. (A solar lifetime is approximately 10 billion years.) yrWhy might this be an underestimate if the star is fully mixed by convection? a) If the star is fully mixed its mass will be much larger than 0.6 solar masses. b) If the star is fully mixed its mass will be much smaller than 0.6 solar masses. c) If the star is fully mixed it will be able to use a larger portion of its hydrogen in fusion than the Sun. d) If the star is fully mixed it will be able to use a smaller portion of its hydrogen in fusion than the Sun.
This star has a mass of 3.3 MSun. What is the main sequence lifetime of this star? You may assume that the lifetime of the sun is 1010 yr.
Astronomers us the P-Cygni line features in a spectrum of a supernova to... Select one alternative: ...measure the velocity of the supernova ejecta. ...to measure the rotation speed of the star that exploded. ...measure the composition of the supernova ejecta more accurately than with other lines. ...to measure the mass of the neutron star or black hole formed in the supernova.
Place the following events in the formation of stars in the proper chronological sequence, with the oldest first and the youngest last. w. the gas and dust in the nebula flatten to a disk shape due to gravity and a steadily increasing rate of angular rotation x. a star emerges when the mass is great enough and the temperature is high enough to trigger thermonuclear fusion in the core y. the rotation of the nebular cloud increases as gas and dust concentrates by gravity within the growing protostar in the center z. some force, perhaps from a nearby supernova, imparts a rotation to a nebular cloud y, then z, then w, then x z, then y, then w, then x w, then y, then z, then x z, then x, then w, then y x, then z, then y, then w MacBook Air on .H. O O O O
A star with spectral type A0 has a surface temperature of 9600 K and a radius of 2.2 RSun. How many times more luminous is this star than the Sun? and This star has a mass of 3.3 MSun. Using the simple approximation that we made in class, what is the main sequence lifetime of this star?
Zebulon is a binary star system composed of a 10 M sun main sequence star and a 1 M sun red giant. Is this strange? yes or no. explain the reasoning.
For the PP chain 0.7% of the mass participating in nuclear fusion is liberated as energy which produces a star's luminosity. Assume that the core of a main sequence star consists of 10% of its total mass. Hence, estimate the lifetime of a star on the main sequence in terms of its luminosity L/L. Give your answer in years. You may use the observed mass-luminosity relation L x M³.5, where M is the star's total mass. Using typical values, calculate estimates for the main sequence lifetime of a KO star and a 05 star. Describe briefly why your estimate might be more accurate for K stars compared to O stars.
We observe a star that is dstar away. How much extinction would there need to be (i.e., what must tau(τ) be) if we had ignored intervening dust, and concluded that it was actually 2*dstar away? Value: dstar = 850 pc
Given two stars in a binary star a total distance of 16 AU apart and an orbital period of 4 years calculate the total or system mass for the binary

SEE MORE QUESTIONS