How does the lifespan of a star 40 times the Sun’s mass compare to our Sun's lifespan?
Answer
It lasts about $1,000$ times shorter, lasting only $10$ million years
Stellar lifespan is determined by the ratio of fuel supply (mass) to fuel consumption (luminosity). A star $40$ times the Sun's mass has significantly more fuel, but it burns this fuel at an exponentially faster rate, estimated between $100,000$ and $1,000,000$ times faster than the Sun. Consequently, while the Sun ($ ext{G2V}$) is expected to live about $10$ billion years, the $40 M_{\odot}$ star burns through its fuel so rapidly that its lifetime is drastically cut short, estimated at only $10$ million years, making it thousands of times shorter lived than our Sun.
Related Questions
What category describes objects less massive than $0.08 M_{\odot}$?What is the mnemonic for the Harvard spectral classification sequence O, B, A, F, G, K, M?What does the Roman numeral 'V' in the Sun's $ ext{G2V}$ classification signify?Where do more massive main-sequence stars map on the Hertzsprung-Russell (H-R) diagram?What two intrinsic properties combine to determine a star's total luminosity?Which H-R diagram region hosts cool, red stars like Betelgeuse that exhibit high total luminosity?Which stellar remnant occupies the lower-left corner of the H-R diagram, such as Sirius B?What does the $ ext{I}$ luminosity class signify within the Morgan-Keenan ($ ext{MK}$) system?How extreme is the density of a white dwarf packing solar mass into an Earth-sized volume?How does the lifespan of a star 40 times the Sun’s mass compare to our Sun's lifespan?What fundamental physical property dictates nearly everything about a star's entire existence?What is the relationship between a main-sequence star’s mass and its position on the H-R diagram?