Homework 5 (stellar properties)
... 6. (3 pts.) What two observations/measurements would you make to classify a star according to its luminosity (i.e., luminosity class, e.g., Ia, Ib, II, III, IV, or V)? (Hint: Look at the HR diagram.) Which equation relates these two quantities to the size (radius) of a star (after all, the luminosit ...
... 6. (3 pts.) What two observations/measurements would you make to classify a star according to its luminosity (i.e., luminosity class, e.g., Ia, Ib, II, III, IV, or V)? (Hint: Look at the HR diagram.) Which equation relates these two quantities to the size (radius) of a star (after all, the luminosit ...
Unit 11 Vocabulary
... regions where new stars are being formed, while others are the remains of dead or dying stars. ...
... regions where new stars are being formed, while others are the remains of dead or dying stars. ...
(HR) Diagrams
... 5. How many sub-types are there in each spectral class? a. For instance, in the range of A type stars, how many A sub-types are there and what are their names? b. Write down the spectral class of the sub-type halfway between K and M. 6. Which is the hottest type of star, O, B, A, F, G, K or M? Circ ...
... 5. How many sub-types are there in each spectral class? a. For instance, in the range of A type stars, how many A sub-types are there and what are their names? b. Write down the spectral class of the sub-type halfway between K and M. 6. Which is the hottest type of star, O, B, A, F, G, K or M? Circ ...
Constellations - Mayo Dark Sky Park
... “to spring forward” and legend says that Pegasus was created when the winged horse leapt from the neck of Medusa the gorgon when Perseus cut off her head. Other stories say Pegasus originates from Poseidon mixing the blood of Medusa in the sea to create a magical pure white stallion in honour of his ...
... “to spring forward” and legend says that Pegasus was created when the winged horse leapt from the neck of Medusa the gorgon when Perseus cut off her head. Other stories say Pegasus originates from Poseidon mixing the blood of Medusa in the sea to create a magical pure white stallion in honour of his ...
BAS - Monthly Sky Guide
... The constellation Lupus, “The Wolf”, sits near the half-man half-horse warrior beast the Centaur and mythology suggests a fight to the death between the two is underway in the sky. Lupus is also not far from Libra and the central bulge region of our Milky Way Galaxy – this means it is a good place ...
... The constellation Lupus, “The Wolf”, sits near the half-man half-horse warrior beast the Centaur and mythology suggests a fight to the death between the two is underway in the sky. Lupus is also not far from Libra and the central bulge region of our Milky Way Galaxy – this means it is a good place ...
Luminosity
... The Nearest Stars • If the sun were a golf ball the nearest star would be in Comox • αCentauri is nearest star at 4light years then Barnard’s star ...
... The Nearest Stars • If the sun were a golf ball the nearest star would be in Comox • αCentauri is nearest star at 4light years then Barnard’s star ...
Stars - Weebly
... Life span of a star depends on its size. – Very large, massive stars burn their fuel much faster than smaller stars – Their main sequence may last only a few hundred thousand years – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
... Life span of a star depends on its size. – Very large, massive stars burn their fuel much faster than smaller stars – Their main sequence may last only a few hundred thousand years – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
Life Cycle of Stars
... • 1. DISTANCE – Measured in light-years • The distance which a ray of light would travel in one year • About 6,000,000,000,000 (6 trillion) miles • 186,000 miles per second ...
... • 1. DISTANCE – Measured in light-years • The distance which a ray of light would travel in one year • About 6,000,000,000,000 (6 trillion) miles • 186,000 miles per second ...
The HR Diagram Interpreted (PowerPoint version)
... The HR Diagram Interpreted: Properties of Stars ...
... The HR Diagram Interpreted: Properties of Stars ...
The HR Diagram Interpreted: Properties of Stars
... The HR Diagram Interpreted: Properties of Stars ...
... The HR Diagram Interpreted: Properties of Stars ...
The Life Cycle of Stars
... Nebula and other nebulae (stars in formation) on this page. Continue by reading up on Main Sequence Stars and find out how our sun compares in mass to other stars like Sirius, and Proxima Centauri. Based on its mass, will our sun be around for a while? Approximately how long before our sun consumes ...
... Nebula and other nebulae (stars in formation) on this page. Continue by reading up on Main Sequence Stars and find out how our sun compares in mass to other stars like Sirius, and Proxima Centauri. Based on its mass, will our sun be around for a while? Approximately how long before our sun consumes ...
Astronomy Webquest _2 STARS
... Stars are formed in clouds of gas and dust, known as ________________. _____________ _______________________ at the center (or core) of stars provides enough energy to make them shine brightly for many years. The exact lifetime of a star depends very much on its ______________. Very large, massive s ...
... Stars are formed in clouds of gas and dust, known as ________________. _____________ _______________________ at the center (or core) of stars provides enough energy to make them shine brightly for many years. The exact lifetime of a star depends very much on its ______________. Very large, massive s ...
Proxima
... Centaurus is known as a “myth” constellation. It’s the 9th largest constellation in the sky Proxima is the 3rd star in Centaurus Contains 2 of the brightest stars (Alpha Centauri and Beta Centauri) It contains 11 stars ...
... Centaurus is known as a “myth” constellation. It’s the 9th largest constellation in the sky Proxima is the 3rd star in Centaurus Contains 2 of the brightest stars (Alpha Centauri and Beta Centauri) It contains 11 stars ...
Problem set 2
... The star Proxima Centauri, probably bound gravitationally to α Centauri (α Cen), is a small main-sequence star of mass 0.123 solar. Using the empirical scaling between the mass and luminosity from the textbook, and between mass and radius (you can assume it’s linear, R ∼ M), compute Proxima’s effect ...
... The star Proxima Centauri, probably bound gravitationally to α Centauri (α Cen), is a small main-sequence star of mass 0.123 solar. Using the empirical scaling between the mass and luminosity from the textbook, and between mass and radius (you can assume it’s linear, R ∼ M), compute Proxima’s effect ...
PDF version (two pages, including the full text)
... Second-brightest among Leo’s stars is Denebola (‘tail of the lion’), well to the east (right, for an observer facing north) of the ‘question mark’. According to Egyptian legend, the sun was in Leo immediately after the Creation, near Denebola. On a more scientific note, Denebola is about 36 light ye ...
... Second-brightest among Leo’s stars is Denebola (‘tail of the lion’), well to the east (right, for an observer facing north) of the ‘question mark’. According to Egyptian legend, the sun was in Leo immediately after the Creation, near Denebola. On a more scientific note, Denebola is about 36 light ye ...
Weathering, Erosion and Mass Movement
... Following the end of each reaction stage, a massive star becomes a red giant ...
... Following the end of each reaction stage, a massive star becomes a red giant ...
An Introduction to Astronomy and Cosmology
... Eve or the 30th June. Since the time definition was changed, 22 leap seconds have had to be added, about one every 18 months, but there were none between 1998 and 2005 showing the slowdown is not particularly regular. Leap seconds are somewhat of a nuisance for systems such as the Global Positioning ...
... Eve or the 30th June. Since the time definition was changed, 22 leap seconds have had to be added, about one every 18 months, but there were none between 1998 and 2005 showing the slowdown is not particularly regular. Leap seconds are somewhat of a nuisance for systems such as the Global Positioning ...
PHYS 2410 General Astronomy Homework 1
... If the size of the Sun is represented by a baseball with the Earth is about 15 meters away, how far away, to scale, would the nearest stars to the Sun be? ...
... If the size of the Sun is represented by a baseball with the Earth is about 15 meters away, how far away, to scale, would the nearest stars to the Sun be? ...
Characteristics of Stars
... 4. In relation to the brightness of other stars how bright is the Sun? What are the three characteristics astronomers use to classify stars? 5. What size is the Sun compared to other stars? What are very large stars called? How far would the supergiant Betelgeuse reach if it were to replace our Sun? ...
... 4. In relation to the brightness of other stars how bright is the Sun? What are the three characteristics astronomers use to classify stars? 5. What size is the Sun compared to other stars? What are very large stars called? How far would the supergiant Betelgeuse reach if it were to replace our Sun? ...
Canis Minor
Canis Minor /ˌkeɪnɨs ˈmaɪnər/ is a small constellation in the northern celestial hemisphere. In the second century, it was included as an asterism, or pattern, of two stars in Ptolemy's 48 constellations, and it is counted among the 88 modern constellations. Its name is Latin for ""lesser dog"", in contrast to Canis Major, the ""greater dog""; both figures are commonly represented as following the constellation of Orion the hunter.Canis Minor contains only two stars brighter than the fourth magnitude, Procyon (Alpha Canis Minoris), with a magnitude of 0.34, and Gomeisa (Beta Canis Minoris), with a magnitude of 2.9. The constellation's dimmer stars were noted by Johann Bayer, who named eight stars including Alpha and Beta, and John Flamsteed, who numbered fourteen. Procyon is the seventh-brightest star in the night sky, as well as one of the closest. A yellow-white main sequence star, it has a white dwarf companion. Gomeisa is a blue-white main sequence star. Luyten's Star is a ninth-magnitude red dwarf and the Solar System's next closest stellar neighbour in the constellation after Procyon. The fourth-magnitude HD 66141, which has evolved into an orange giant towards the end of its life cycle, was discovered to have a planet in 2012. There are two faint deep sky objects within the constellation's borders. The 11 Canis-Minorids are a meteor shower that can be seen in early December.