If Sirius were moved 10x further away what would happen to its: parallax, surface temperature, apparent magnitude, absolute magnitude? Would these quantities in- crease, decrease or stay the same?
If Sirius were moved 10x further away what would happen to its: parallax, surface temperature, apparent magnitude, absolute magnitude? Would these quantities in- crease, decrease or stay the same?
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![3.5
Sirius
If Sirius were moved 10x further away what would happen to its: parallax, surface
temperature, apparent magnitude, absolute magnitude? Would these quantities in-
crease, decrease or stay the same?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcbb2b322-9c94-4f50-be64-e6c13bb67dc4%2F3b892167-58a3-4d95-a8c9-e1e2ceb210d8%2F75xc548_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3.5
Sirius
If Sirius were moved 10x further away what would happen to its: parallax, surface
temperature, apparent magnitude, absolute magnitude? Would these quantities in-
crease, decrease or stay the same?
![3.3 Exoplanet detection
Radial velocity measurements show that a star is wobbling with a period of 7.5 days
and with a velocity of 45 m s-1. If the star has the same mass as the Sun (2 × 1030kg),
estimate the semi-major axis of the orbit of the planet that causes this wobble. Hence
estimate the mass of the planet. What uncertainty remains in your estimate?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcbb2b322-9c94-4f50-be64-e6c13bb67dc4%2F3b892167-58a3-4d95-a8c9-e1e2ceb210d8%2Fx8nmzem_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3.3 Exoplanet detection
Radial velocity measurements show that a star is wobbling with a period of 7.5 days
and with a velocity of 45 m s-1. If the star has the same mass as the Sun (2 × 1030kg),
estimate the semi-major axis of the orbit of the planet that causes this wobble. Hence
estimate the mass of the planet. What uncertainty remains in your estimate?
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