Luminosity - Study guides, Revision notes & Summaries

Astro 7N Exam 2 Questions and Answers | Verified Updated| Latest 2024. 1. A high-luminosity star ... A: is always at a larger distance than a low-luminosity star B: emits more light than a low-luminosity star C: is always redder than a star with a lower luminosity D: is at a lower temperature than a low-luminosity star E: is always at a smaller distance than a low-luminosity star 2. If a red giant appears the same brightness as a red main sequence star, which one is farther away? A:...

Astro 7N Exam 2 Questions and Answers | Verified Updated| Latest 2024. 1. A high-luminosity star ... A: is always at a larger distance than a low-luminosity star B: emits more light than a low-luminosity star C: is always redder than a star with a lower luminosity D: is at a lower temperature than a low-luminosity star E: is always at a smaller distance than a low-luminosity star 2. If a red giant appears the same brightness as a red main sequence star, which one is farther away? A:...

A high-luminosity star... A. is always at a larger distance than a low-luminosity star B. emits more light than a low-luminosity star C. is always redder than a star with a lower luminosity D. is at a lower temperature than a low-luminosity star E. is always at a smaller distance than a low-luminosity star Answer - B If a red giant appears the same brightness as a red main sequence star, which one is further away? A. the red giant B. we cannot tell C. it depends on the phase o...

A large luminosity star - Emits more light than a low luminosity star If a red giant appears the same brightness as a red main sequence star, which one is further away? - The red giant The heaviest nuclei of all are formed - During a supernova explosion Hydrogen-2 + proton = ? - Hydrogen-2 + proton = Helium-3 Why does the main sequence part of a star's life end? - The hydrogen in the core is exhausted Many of the brightest 100 stars viewed from Earth are not on the main sequence (even tho...

To get started, click on the blue Cepheids link on the main screen of the Interactive Figure. The Interactive Figure (in red) shows a graph of the Cepheid period-luminosity relation. This graph indicates that __________. - Cepheids with longer periods have higher luminosities A Cepheid with a period of 30 days has an average luminosity that is about __________ times the luminosity of the Sun. - 10,000 Click on the blue "Cepheid" label, then click the label on the bottom of the Intera...

Astro 7n Exam 2A high-luminosity star... A. is always at a larger distance than a low-luminosity star B. emits more light than a low-luminosity star C. is always redder than a star with a lower luminosity D. is at a lower temperature than a low-luminosity star E. is always at a smaller distance than a low-luminosity star - correct answer B If a red giant appears the same brightness as a red main sequence star, which one is further away? A. the red giant B. we cannot tell C. it...

Astro 7n Exam 2A high-luminosity star... A. is always at a larger distance than a low-luminosity star B. emits more light than a low-luminosity star C. is always redder than a star with a lower luminosity D. is at a lower temperature than a low-luminosity star E. is always at a smaller distance than a low-luminosity star - correct answer B If a red giant appears the same brightness as a red main sequence star, which one is further away? A. the red giant B. we cannot tell C. it...

Astro 7n Exam 2 Question and answers 100% correct 2024 Astro 7n Exam 2 A high-luminosity star... A. is always at a larger distance than a low-luminosity star B. emits more light than a low-luminosity star C. is always redder than a star with a lower luminosity D. is at a lower temperature than a low-luminosity star E. is always at a smaller distance than a low-luminosity star - correct answer B If a red giant appears the same brightness as a red main sequence star, which one i...

dark energy + evidence correct answers a mysterious repulsive force that appears to be causing the expansion of the universe to accelerate Type Ia supernovae as standard candles; Hbl law says they should be moving faster there; inverse square law for light dictates that dimmer = farther; calculated dstncs to things are even farther than their redshift predicts; they are being pushed away dark matter + evidence correct answers matter (gravity, attractive force) that does not give off electr...

If star Alpha Centauri moved to 10 miles faster than it is now, the parallax angle would? correct answers get smaller What do you need to measure in order to determine a stars luminosity? correct answers Apparent brightness and distance Which of these stars clusters is oldest? correct answers A cluster whose brightest main sequence stars are yellow What two factors of info do you need for characteristics of stars? correct answers Its mass and it's stage of life Star A and B are iden...