Life Cycle of Stars
... • Eventually, fusion begins in hydrogen gas at the core and the star begins its life. ...
... • Eventually, fusion begins in hydrogen gas at the core and the star begins its life. ...
25 Study Guide
... is about 100,000 light-years wide and about 10,000 light-years thick at the nucleus. • In addition to shape and size, one of the major differences among different types of galaxies is the age of their stars. • The red shifts of distant galaxies indicate that the universe is expanding. • The big bang ...
... is about 100,000 light-years wide and about 10,000 light-years thick at the nucleus. • In addition to shape and size, one of the major differences among different types of galaxies is the age of their stars. • The red shifts of distant galaxies indicate that the universe is expanding. • The big bang ...
Sample exam 2
... 12. What are the conditions necessary to initiate star formation? Give at least three different characteristics, and how each leads to (or is needed for) star formation. 13. Globular clusters are clusters that orbit a galaxy that contain millions of M-class stars. What does this suggest about the ag ...
... 12. What are the conditions necessary to initiate star formation? Give at least three different characteristics, and how each leads to (or is needed for) star formation. 13. Globular clusters are clusters that orbit a galaxy that contain millions of M-class stars. What does this suggest about the ag ...
Magnitude scale theory
... The magnitudes of stars - theory How bright a star looks is given by its apparent magnitude. This is different from its absolute magnitude. The absolute magnitude of a star is defined as the apparent magnitude that it would have if placed at a distance of 10 parsecs from the Earth. Consider two star ...
... The magnitudes of stars - theory How bright a star looks is given by its apparent magnitude. This is different from its absolute magnitude. The absolute magnitude of a star is defined as the apparent magnitude that it would have if placed at a distance of 10 parsecs from the Earth. Consider two star ...
Roy - WordPress.com
... Canis Major, the “big dog”, boasts the brightest star in the night sky— Sirius! Also known as The Dog Star because of the constellation it resides in, Sirius is a massive, hot, blue star—and it’s right next door! One of the reasons Sirius is so bright is that it is so close to us—only 8.6 lightyear ...
... Canis Major, the “big dog”, boasts the brightest star in the night sky— Sirius! Also known as The Dog Star because of the constellation it resides in, Sirius is a massive, hot, blue star—and it’s right next door! One of the reasons Sirius is so bright is that it is so close to us—only 8.6 lightyear ...
E3 STELLAR DISTANCES E4 COSMOLOGY
... A main sequence star emits most of its energy at λ = 2.4 x 10-7 m. Its apparent brightness is measure at 4.3 x 10-9 W m-2. How far away is the star? [28 pc] ...
... A main sequence star emits most of its energy at λ = 2.4 x 10-7 m. Its apparent brightness is measure at 4.3 x 10-9 W m-2. How far away is the star? [28 pc] ...
The Ursa Major Moving Cluster, Collinder 285
... sky, and probably includes the outlying member Alpha Coronae Borealis, which is 30 degrees off. The stars are similar to those found in the Hyades and Praesepe (M44), indicating that this cluster is of roughly the same age (700-800 million years) as the other two. Studies of the motions of nearby st ...
... sky, and probably includes the outlying member Alpha Coronae Borealis, which is 30 degrees off. The stars are similar to those found in the Hyades and Praesepe (M44), indicating that this cluster is of roughly the same age (700-800 million years) as the other two. Studies of the motions of nearby st ...
THE STAR - physics.udel.edu
... contemporaneous Persian figure.[2] The two other notably bright stars in Cassiopeia are both variable stars. Gamma Cassiopeiae is a shell star, a type of variable star that has a very high rate of rotation. This causes the star to be somewhat unstable and periodically eject rings of material. ...
... contemporaneous Persian figure.[2] The two other notably bright stars in Cassiopeia are both variable stars. Gamma Cassiopeiae is a shell star, a type of variable star that has a very high rate of rotation. This causes the star to be somewhat unstable and periodically eject rings of material. ...
24-2 Characteristics of Stars
... Measuring Distances to Stars • Use parallax to measure distances from earth to stars – Parallax – apparent change in position of an object when you look at it from different places – Look at star when earth is on one side of the sun and look at same when earth is on other side of the sun – Measure ...
... Measuring Distances to Stars • Use parallax to measure distances from earth to stars – Parallax – apparent change in position of an object when you look at it from different places – Look at star when earth is on one side of the sun and look at same when earth is on other side of the sun – Measure ...
A Brief History of Planetary Science
... Faintest star you can see: Faintest star with small telescope: Large telescope and CCD camera: ...
... Faintest star you can see: Faintest star with small telescope: Large telescope and CCD camera: ...
Study Guide Astronomy
... Chapter 4 Section 2 Characteristics of Stars (pages 126-133) 1. Name 5 characteristics used to classify stars. ...
... Chapter 4 Section 2 Characteristics of Stars (pages 126-133) 1. Name 5 characteristics used to classify stars. ...
Stars and Their Characteristics
... to form patterns – 88 constellations can be seen from n. and s. hemispheres – So far away that only after thousands of years might the motions be observed – Big Dipper- asterism (small-star grouping) • Part of Ursa Major- Great Bear ...
... to form patterns – 88 constellations can be seen from n. and s. hemispheres – So far away that only after thousands of years might the motions be observed – Big Dipper- asterism (small-star grouping) • Part of Ursa Major- Great Bear ...
Properties of Stars and H
... Which Star is Brighter? • From Earth, both stars A and B seem like they have the same brightness. • Because we see this from earth, we say that the apparent magnitude is the same. • In reality, Star B is far brighter, but it is just farther away. • We would say that the actual magnitude of star B i ...
... Which Star is Brighter? • From Earth, both stars A and B seem like they have the same brightness. • Because we see this from earth, we say that the apparent magnitude is the same. • In reality, Star B is far brighter, but it is just farther away. • We would say that the actual magnitude of star B i ...
Stars
... Mizar, 88 light years distant, is the middle star in the handle of the Big Dipper. It was the first binary star system to be imaged with a telescope. Spectroscopic observations show periodic Doppler shifts in the spectra of Mizar A and B, indicating that they are each binary stars. But they were too ...
... Mizar, 88 light years distant, is the middle star in the handle of the Big Dipper. It was the first binary star system to be imaged with a telescope. Spectroscopic observations show periodic Doppler shifts in the spectra of Mizar A and B, indicating that they are each binary stars. But they were too ...
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.