Characterizing Stars - Department of Physics and Astronomy
... 1. How far away are the stars? 2. What evidence do astronomers have that the Sun is a typical star? 3. What is meant by a “first-magnitude” or “second magnitude” star? 4. Why are some stars red and others blue? 5. What are the stars made of? 6. As stars go, is our Sun especially large or small? 7. W ...
... 1. How far away are the stars? 2. What evidence do astronomers have that the Sun is a typical star? 3. What is meant by a “first-magnitude” or “second magnitude” star? 4. Why are some stars red and others blue? 5. What are the stars made of? 6. As stars go, is our Sun especially large or small? 7. W ...
Quiz Chapter 10 Answers
... Quiz Chapter 10 Answers 10-1. Protostars are not seen in visible light telescopes because: a) they don’t emit any radiation b) they are surrounded by clouds of gas and dust X c) they only emit infrared radiation d) they are all moving away from Earth so fast that their visible light is Doppler shift ...
... Quiz Chapter 10 Answers 10-1. Protostars are not seen in visible light telescopes because: a) they don’t emit any radiation b) they are surrounded by clouds of gas and dust X c) they only emit infrared radiation d) they are all moving away from Earth so fast that their visible light is Doppler shift ...
Hubble`s Law is the relation between the recession velocity of a
... Also, while population I stars are younger than population II stars, not all (or even most) population I stars are bright blue O stars. Most (like our sun) are plain old mid or low mass stars that formed relatively recently (compared to pop. II stars in the halo), but are a still a long way from the ...
... Also, while population I stars are younger than population II stars, not all (or even most) population I stars are bright blue O stars. Most (like our sun) are plain old mid or low mass stars that formed relatively recently (compared to pop. II stars in the halo), but are a still a long way from the ...
Irregular Galaxies
... • Supernovas can light up the sky for many weeks. • The core of the star becomes tremendously hot, fusing iron atoms into new elements. • Huge clouds of dust, gas, and the new elements explode into space. • This forms a new nebula. • Once a star supernovas, the core that remains of it will become ei ...
... • Supernovas can light up the sky for many weeks. • The core of the star becomes tremendously hot, fusing iron atoms into new elements. • Huge clouds of dust, gas, and the new elements explode into space. • This forms a new nebula. • Once a star supernovas, the core that remains of it will become ei ...
Lecture 13
... • These stars have finished fusing H to He in their cores are no longer on the main sequence. • They may be fusing He to Carbon in their core or fusing H to He in shell outside the core … but there is no H to He fusion in the core. • All stars become larger and redder after exhausting their core hyd ...
... • These stars have finished fusing H to He in their cores are no longer on the main sequence. • They may be fusing He to Carbon in their core or fusing H to He in shell outside the core … but there is no H to He fusion in the core. • All stars become larger and redder after exhausting their core hyd ...
Astronomy Quiz 12 “Stars
... C. sun D. Hertzprung thermometer _____6. Mass is the fuel for stellar fusion, so who do high-mass stars have such short lives? A. High mass causes stronger gravity, which forces fusion to occur at a faster rate, and they burn out quickly. B. High mass inhibits the gravitational force, slowing fusion ...
... C. sun D. Hertzprung thermometer _____6. Mass is the fuel for stellar fusion, so who do high-mass stars have such short lives? A. High mass causes stronger gravity, which forces fusion to occur at a faster rate, and they burn out quickly. B. High mass inhibits the gravitational force, slowing fusion ...
Earth Science: Chapter 7: Stellar Evolution: Spring 2017: Student
... Greater than 20 Less than 10 million years Same as above except the mass is great enough to solar masses form a BLACK HOLE (see below) Planetary nebula: after a red giant forms material from the star is ejected and forms what looks like a nebula. The name planetary is actually misnamed by an early a ...
... Greater than 20 Less than 10 million years Same as above except the mass is great enough to solar masses form a BLACK HOLE (see below) Planetary nebula: after a red giant forms material from the star is ejected and forms what looks like a nebula. The name planetary is actually misnamed by an early a ...
Stellar Evolution and the HR Diagram – Study Guide
... c. Which is brighter, the sun or a white dwarf? The Sun (but not as hot) d. Is Vega brighter than our sun? Yes e. Is Antares hotter than our sun? No, it’s a giant, class K or M 22. Stars that move off the main sequence first move to the _Giant_ region of the HR diagram. These stars are fusing __heli ...
... c. Which is brighter, the sun or a white dwarf? The Sun (but not as hot) d. Is Vega brighter than our sun? Yes e. Is Antares hotter than our sun? No, it’s a giant, class K or M 22. Stars that move off the main sequence first move to the _Giant_ region of the HR diagram. These stars are fusing __heli ...
Make one copy for each student on plain paper. Life Cycle of Star
... Make one copy for each student on plain paper. ...
... Make one copy for each student on plain paper. ...
BV Color Index and Temperature - The University of Texas at Dallas
... • B-V color index way of quantifying this - determining spectral class using two different filters Ø one a blue (B) filter that only lets a narrow range of colors or wavelengths through centered on the blue colors, Ø and a “visual” (V) filter that only lets the wavelengths close to the ...
... • B-V color index way of quantifying this - determining spectral class using two different filters Ø one a blue (B) filter that only lets a narrow range of colors or wavelengths through centered on the blue colors, Ø and a “visual” (V) filter that only lets the wavelengths close to the ...
1 Sep: 6.13am BST 15 Sep: 6.43am BST 30 Sep: 7.14am BST
... and Aquila (the Eagle) whose brightest stars of Deneb, Vega and Altair respectively make up the Summer Triangle. The Swan’s beak is marked by Albireo and halfway between Albireo and Altair is Sagitta (the Arrow) a small but lovely constellation representing an arrow sailing harmlessly between the tw ...
... and Aquila (the Eagle) whose brightest stars of Deneb, Vega and Altair respectively make up the Summer Triangle. The Swan’s beak is marked by Albireo and halfway between Albireo and Altair is Sagitta (the Arrow) a small but lovely constellation representing an arrow sailing harmlessly between the tw ...
Brichler-powerpoint
... • It contains a star and the planets and other objects that revolve around the star. • Our solar system contains the sun, and all the planets, moons, and objects that revolve ...
... • It contains a star and the planets and other objects that revolve around the star. • Our solar system contains the sun, and all the planets, moons, and objects that revolve ...
What`s Up - April 2016
... mark of Leo the Lion, representing the Lion’s head and mane. Brightest of Leo’s stars is Regulus, the ‘prince’ and one of the four ‘royal stars’, 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’. Accord ...
... mark of Leo the Lion, representing the Lion’s head and mane. Brightest of Leo’s stars is Regulus, the ‘prince’ and one of the four ‘royal stars’, 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’. Accord ...
(HR) Diagrams
... Absolute visual magnitude relates to how bright the star really is, not just how bright it appears to be as seen from Earth. Remember that the SMALLER the MV number, the MORE LUMINOUS the star is, in absolute terms. A star with MV = –5.0 is MUCH more luminous than an MV = 1.0 star. To put it another ...
... Absolute visual magnitude relates to how bright the star really is, not just how bright it appears to be as seen from Earth. Remember that the SMALLER the MV number, the MORE LUMINOUS the star is, in absolute terms. A star with MV = –5.0 is MUCH more luminous than an MV = 1.0 star. To put it another ...
The magnitude scale, parallax, the parsec, and Cepheid distances
... – e.g. if f ranges from 101 to 1030 units ...
... – e.g. if f ranges from 101 to 1030 units ...
Auriga (constellation)
Auriga is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy and remains one of the 88 modern constellations. Located north of the celestial equator, its name is the Latin word for ""charioteer"", associating it with various mythological charioteers, including Erichthonius and Myrtilus. Auriga is most prominent during winter evenings in the Northern Hemisphere, along with the five other constellations that have stars in the Winter Hexagon asterism. Because of its northern declination, Auriga is only visible in its entirety as far as 34° south; for observers farther south it lies partially or fully below the horizon. A large constellation, with an area of 657 square degrees, it is half the size of the largest constellation, Hydra.Its brightest star, Capella, is an unusual multiple star system among the brightest stars in the night sky. Beta Aurigae is an interesting variable star in the constellation; Epsilon Aurigae, a nearby eclipsing binary with an unusually long period, has been studied intensively. Because of its position near the winter Milky Way, Auriga has many bright open clusters in its borders, including M36, M37, and M38, popular targets for amateur astronomers. In addition, it has one prominent nebula, the Flaming Star Nebula, associated with the variable star AE Aurigae.In Chinese mythology, Auriga's stars were incorporated into several constellations, including the celestial emperors' chariots, made up of the modern constellation's brightest stars. Auriga is home to the radiant for the Aurigids, Zeta Aurigids, Delta Aurigids, and the hypothesized Iota Aurigids.